ACLs and Route Maps

The switch uses rule-based lists to control packet access to ports and to select routes for redistribution to routing domains defined by dynamic routing protocols. This section describes the construction of Access Control Lists (ACLs), prefix lists, and route maps.

This section includes the following topics:

ACL, Service ACL, Route Map, Prefix List, and RACL Divergence Introduction

Access Control Lists (ACLs), Service ACLs, route maps, and prefix lists are all processed in order, beginning with the first rule and proceeding until a match is encountered.

An Access Control List (ACL) is a list of rules that control the inbound flow of packets into Ethernet interfaces, subinterfaces, and port channel interfaces or the switch control plane. The switch supports the implementation of a wide variety of filtering criteria including IP and MAC addresses, TCP/UDP ports with include/exclude options without compromising its performance or feature set. Filtering syntax is industry standard.

A Service ACL is an ACL applied by a control-plane process to control connections to, or packets processed by, the agent process.

A route map is a list of rules that control the redistribution of IP routes into a protocol domain on the basis of such criteria as route metrics, access control lists, next hop addresses, and route tags. Route maps can also alter parameters of routes as they are redistributed.

A prefix list is a list of rules that defines route redistribution access for a specified IP address space. Route maps often use prefix lists to filter routes.

The RACL divergence optimizes the usage of hardware resourcesoccupied on each forwarding ASIC by installing ACLs only on the hardware components corresponding to the member interfaces belonging to the SVIs on which ACL is applied. Hence, saving the hardware resources used and enables RACLs to scale-up to a larger configuration. The show commands are used to display the interface mapping, TCAM entries, and TCAM utilization information.

Access Control Lists

These sections describe access control lists:

ACL Types

The switch supports the following ACL types:
  • IPv4 can match on IPv4 source or destination addresses, with L4 modifiers including protocol, port number, and DSCP value.
  • IPv6 can match on IPv6 source or destination addresses, with L4 modifiers including protocol, port number, etc.
  • Standard IPv4 can match only on source IPv4 address.
  • Standard IPv6 can match only on source IPv6 address.
  • MAC can match on L2 source and destination addresses..

ACLs can also be made dynamic (not persisting in the eos), and the payload keyword can be used to turn an ACL into a User-Defined Field (UDF) alias for use in other ACLs.

ACL Structure

An ACL is an ordered list of rules that defines access restrictions for the entities (the control plane, or an interface) to which it is applied. ACLs are also used by route maps to select routes for redistribution into specified routing domains.

ACL rules specify the data to which packet contents are compared when filtering data.
  • The interface forwards packets that match all commands in a permit rule.
  • The interface drops packets that match all commands in a deny rule.
  • The interface drops packets that do not match at least one rule.

Upon its arrival at an interface, a packet’s fields are compared to the first rule of the ACL applied to the interface. Packets that match the rule are forwarded (permit rule) or dropped (deny rule). Packets that do not match the rule are compared to the next rule in the list. This process continues until the packet either matches a rule or the rule list is exhausted. The interface drops packets not matching a rule.

The sequence number designates the rule's placement in the ACL.

ACL Rules

ACL rules consist of a command list that is compared to inbound packet fields. When all of a rule’s criteria match a packet’s contents, the interface performs the action specified by the rule.

The set of available commands depend on the ACL type and the specified protocol within the rule. The following is a list of commands available for supported ACL types

IPv4 ACL Rule Parameters
All rules in IPv4 ACLs include the following criteria:
  • Protocol: The packet’s IP protocol. Valid rule inputs include:
    • Protocol name for a limited set of common protocols.
    • Assigned protocol number for all IP protocols.
  • Source Address: The packet’s source IPv4 address. Valid rule inputs include:
    • A subnet address (CIDR or address-mask). Discontiguous masks are supported.
    • A host IP address (dotted decimal notation).
    • any to denote that the rule matches all source addresses.
  • Destination Address: The packet’s destination IP address. Valid rule inputs include:
    • A subnet address (CIDR or address-mask). Discontiguous masks are supported.
    • A host IP address (dotted decimal notation).
    • any to denote that the rule matches all destination addresses.
All rules in IPv4 ACLs may include the following criteria:
  • Fragment: Rules filter on the fragment bit.
  • Time-to-live: Compares the TTL (time-to-live) value in the packet to a specified value. Valid in ACLs applied to the control plane. Validity in ACLs applied to the data plane varies by switch platform. Comparison options include:
    • Equal: Packets match if packet value equals statement value.
    • Greater than: Packets match if packet value is greater than statement value.
    • Less than: Packets match if packet value is less than statement value.
    • Not equal: Packets match if packet value does not equal statement value.
The availability of the following optional criteria depends on the specified protocol:
  • Source Ports / Destination Ports: A rule filters on ports when the specified protocol supports IP address-port combinations. Rules provide one of these port filtering values:
    • any denotes that the rule matches all ports.
    • A list of ports that matches the packet port. Maximum list size is 10 ports.
    • Negative port list. The rule matches any port not in the list. Maximum list size is 10 ports.
    • Integer (lower bound): The rule matches any port with a number larger than the integer.
    • Integer (upper bound): The rule matches any port with a number smaller than the integer.
    • Range integers: The rule matches any port whose number is between the integers.
  • Flag bits: Rules filter TCP packets on flag bits.
  • Message type: Rules filter ICMP type or code.
  • Tracked: Matches packets in existing ICMP, UDP, or TCP connections. Valid in ACLs applied to the control plane. Validity in ACLs applied to the data plane varies by switch platform.
IPv6 ACL Rule Parameters
Note: When calculating the size of ACLs, be aware that Arista switches install four rules in every IPv6 ACL so that ICMPv6 neighbor discovery packets bypass the default drop rule.
All rules in IPv6 ACLs include the following criteria:
  • Protocol: All rules filter on the packet’s IP protocol field. Rule input options include:
    • Protocol name for a limited set of common protocols.
    • Assigned protocol number for all IP protocols.
  • Source Address: The packet’s source IPv6 address. Valid rule inputs include:
    • An IPv6 prefix (CIDR). Discontiguous masks are supported.
    • A host IP address (dotted decimal notation).
    • any to denote that the rule matches all addresses.
  • Destination Address: The packet’s destination IP address. Valid rule inputs include:
    • A subnet address (CIDR or address-mask). Discontiguous masks are supported.
    • A host IP address (dotted decimal notation).
    • any to denote that the rule matches all addresses.
All rules in IPv6 ACLs may include the following criteria:
  • Fragment: Rules filter on the fragment bit.
  • HOP     Compares the packet’s hop-limit value to a specified value. Comparison options include:
    • eq: Packets match if hop-limit value equals statement value.
    • gt: Packets match if hop-limit value is greater than statement value.
    • lt: Packets match if hop-limit value is less than statement value.
    • neq: Packets match if hop-limit value is not equal to statement value.
The availability of the following optional criteria depends on the specified protocol:
  • Source Ports / Destination Ports: A rule filters on ports when the specified protocol supports IP address-port combinations. Rules provide one of these port filtering values:
    • any denotes that the rule matches all ports.
    • A list of ports that matches the packet port. Maximum list size is 10 ports.
    • Negative port list. The rule matches any port not in the list. Maximum list size is 10 ports.
    • Integer (lower bound): The rule matches any port with a number larger than the integer.
    • Integer (upper bound): The rule matches any port with a number smaller than the integer.
    • Range integers: The rule matches any port whose number is between the integers.
  • Flag bits: Rules filter TCP packets on flag bits.
  • Message type: Rules filter ICMP type or code.
  • Tracked: Matches packets in existing ICMP, UDP, or TCP connections. Valid in ACLs applied to the control plane. Validity in ACLs applied to the data plane varies by switch platform.
Standard IPv4 and IPv6 ACL Rule Parameters
Note: When calculating the size of ACLs, be aware that Arista switches install four rules in every IPv6 ACL so that ICMPv6 neighbor discovery packets bypass the default drop rule.

Standard ACLs filter only on the source address.

MAC ACL Rule Parameters
MAC ACLs filter traffic on a packet’s layer 2 header. Criteria that MAC ACLs use to filter packets include:
  • Source Address and Mask: The packet’s source MAC address. Valid rule inputs include:
    • MAC address range (address-mask in 3x4 dotted hexadecimal notation).
    • any to denote that the rule matches all source addresses.
    • Destination Address and Mask: The packet’s destination MAC address. Valid rule inputs include:
      • MAC address range (address-mask in 3x4 dotted hexadecimal notation).
      • any to denote that the rule matches all destination addresses.
    • Protocol: The packet’s protocol as specified by its EtherType field contents. Valid inputs include:
      • Protocol name for a limited set of common protocols.
      • Assigned protocol number for all protocols.

Creating and Modifying Lists

The switch provides configuration modes for creating and modifying ACLs. The command that enters an ACL configuration mode specifies the name of the list that the mode modifies. The switch saves the list to the running configuration when the configuration mode is exited.
  • ACLs are created and modified in ACL configuration mode.
  • Standard ACLs are created and modified in Standard-ACL-configuration mode.
  • MAC ACLs are created and modified in MAC-ACL-configuration mode.

Lists that are created in one mode cannot be modified in any other mode.

A sequence number designates the rule’s placement in a list. New rules are inserted into a list according to their sequence numbers. A rule’s sequence number can be referenced when deleting it from a list.

ACL Configuration describes procedures for configuring ACLs.

Implementing Access Control Lists

An Access Control List (ACL) is implemented by assigning the list to an Ethernet interface or subinterface, to a port channel interface, or to the control plane. The switch assigns a default ACL to the control plane unless the configuration contains a valid control-plane ACL assignment statement. Ethernet and port channel interfaces are not assigned an ACL by default. Standard ACLs are applied to interfaces in the same manner as other ACLs.

IPv4 and MAC ACLs are separately applied for inbound and outbound packets. An interface or subinterface can be assigned multiple ACLs, with a limit of one ACL per packet direction per ACL type. Egress ACLs are supported on a subset of all available switches. The control-plane does not support egress ACLs.

Applying ACLs describes procedures for applying ACLs to interfaces or the control plane.

ACL Rule Tracking

ACL rule tracking determines the impact of ACL rules on the traffic accessing interfaces upon which they are applied. ACLs provide two tracking mechanisms:
  • ACL logging: A syslog entry is logged when a packet matches specified ACL rules.
  • ACL counters: ACL counters increment when a packet matches a rule in specified ACLs.
ACL Logging

ACL rules provide a log option that produces a log message when a packet matches the rule. ACL logging creates a syslog entry when a packet matches an ACL rule where logging is enabled. Packets that match a logging-enabled ACL rule are copied to the CPU by the hardware. These packets trigger the creation of a syslog entry. The information provided in the entry depends on the ACL type or the protocol specified by the ACL. Hardware rate limiting is applied to packets written to the CPU, avoiding potential DoS attacks. The rate of logging is also software limited to avoid the creation of syslog lists that are too large for practical use by human operators.

ACL Rule Tracking Configuration describes procedures for configuring and enabling ACL logging.

ACL Counters

An ACL counter is assigned to each ACL rule. The activity of the ACL counters for rules within a list depend on the list’s counter state. When the list is in counting state, the ACL counter of a rule increments when the rule matches a packet. When the list is in a non-counting state, the counter does not increment. A list’s counter state applies to all rules in the ACL. The default state for new ACLs is non-counting.

When an ACL changes from counting state to non-counting state, or when the ACL is no longer applied to any interfaces that increment counters, counters for all rules in the list maintain their values and do not reset. When the ACL returns to counting mode or is applied to an interface that increments counters, the counter operation resumes from its most recent value.

Counters never decrement and are reset only through CLI commands.

ACL Rule Tracking Configuration describes procedures for configuring and enabling ACL counters.

Egress ACL Counters

Egress ACL counters count the number of packets matching rules associated with egress ACLs applied to various interfaces in a switch. For 7050 and 7060 series switches, these counters are maintained for every TCAM rule; on these platforms, packet counters greater than zero are always shown by commands such as show platform trident tcam, show platform trident counters, and show ip access-list. For other switches, counters are not enabled by default and must be configured for each ACL, and the counters can be shown with the show hardware counter and show ip access-list commands.

configuring Egress ACL Counters

For 7050 and 7060 series switches, egress ACL counters are always enabled, and no configuration is required.

For other platforms, to enable egress ACL counters for a specific ACL, use the counter per-entry command in the configuration mode for the ACL.

Example

In the following example, configure the counters per-entry command in the ACL configuration mode.

switch(config)# ip access-list acl1
switch(config-acl-acl1)# counters per-entry
Enabling Egress Counters Globally

For 7050 and 7060 series switches, egress counters are always enabled.

For other switches, both IPv4 and IPv6 egress ACL counters are enabled in the global configuration mode by using the hardware counter feature acl out command.

Example

The following example shows how to enable IPv4 egress ACL counters.
switch(config)# hardware counter feature acl out ipv4
switch(config)#
The following example shows how to enable IPv6 egress ACL counters.
switch(config)# hardware counter feature acl out ipv6
switch(config)#
Disabling Egress Counters Globally

For 7050 and 7060 series switches, egress counters cannot be disabled.

For other switches, both IPv4 and IPv6 egress ACL counters are also disabled in the global configuration mode by using the hardware counter feature acl out command.

The following example shows how to disable IPv4 egress ACL counters.

switch(config)# no hardware counter feature acl out ipv4
switch(config)#

The following example shows how to disable IPv6 egress ACL counters.

switch(config)# no hardware counter feature acl out ipv6
switch(config)#
Egress Counter Roll Over in the Global Mode

The counters roll over when the counter value for an ACL rule exceeds 2^64.

Example

In the following example, the hardware counter feature acl ipv6 out command is configured using units and packets. 

switch(config)# hardware counter feature acl ipv6 out units packets
switch(config)#

The clear ip access-lists counters command clears the counters for all of the IPv4 ACLs or a specific IPv4 ACL, either globally or per-CLI session.

Example

In the following example the ACL list named red is selected. 

switch(config)# clear ip access-list counters red session
switch(config)#

The IPv6 egress ACL counters do not work in unshared mode.

Example

Use the hardware access-lists resource sharing vlan ipv6 out command to enable egress IPv6 ACL sharing.

switch(config)#hardware access-list resource sharing vlan ipv6 out
switch(config)#

The clear ipv6 access-list counters command clears the counters for all of the IPv6 ACLs or a specific IPv6 ACL, either globally or per-CLI session.

Example

In the following example the ACL list named green is selected. 

switch(config)# clear ipv6 access-list counters green session
switch(config)#
Displaying Egress ACL Counters

Use the following show commands to display Egress ACL Counters information.

Use the show ip access-lists command to display all the IPv4 ACLs, or a specific IPv4 ACL configured in a switch. The output contains details such as rules in an ACL and respective counter values with each rule.
switch(config)# show ip access-list acl1
IP Access List acl1
        counter per-entry
        10 deny ip 11.1.1.0/24 any dscp af11
        20 deny ip any any [match 39080716, 0:00:00 ago]
Use the show ipv6 access-lists command to display all the IPv6 ACLs or a specific IPv6 ACL configured in a switch. The output contains details such as rules in an ACL and respective counter values with each rule.
switch(config)# show ipv6 access-list acl1
IPV6 Access List acl1
        counter per-entry
        10 permit ipv6 any any [match 3450000, 0:00:10 ago]
        20 deny ipv6 any any
The counter name EgressAclDropCounter in the output of this show command signifies the aggregate counter value for the remaining egress IPv4 ACL. In this example the deny rules, whose per rule counters, are not allocated. The per rule counters is not allocated when the user does not configure the counter per-entry parameter for the respective ACL.
switch(config)# show hardware counter drop
Summary:
Total Adverse (A) Drops: 0
Total Congestion (C) Drops: 0
Total Packet Processor (P) Drops: 250
Type Chip CounterName : Count : First Occurrence : Last Occurrence
-------------------------------------------------------------------------------
P Fap0 EgressAclDropCounter : 250 : 2015-11-11 22:39:02 : 2015-11-11 22:51:44

ACL Configuration

Access Control Lists (ACLs) are created and modified in an ACL-configuration mode. A list can be edited only in the mode where it was created. The switch provides five configuration modes for creating and modifying access control lists:
  • ACL configuration mode for IPv4 access control lists.
  • IPv6-ACL configuration mode for IPv6 access control lists.
  • Std-ACL configuration mode for Standard IPv4 access control lists.
  • Std-IPv6-ACL configuration mode for Standard IPv6 access control lists.
  • MAC-ACL configuration mode for MAC access control lists.
These sections describe the creation and modification of ACLs:

Managing ACLs

Creating and Opening a List
To create an ACL, enter one of the following commands, followed by the name of the list:

The switch enters the appropriate ACL configuration mode for the list. If the command is followed by the name of an existing ACL, subsequent commands edit that list (see Modifying an ACL for additional information).

Examples
  • This command places the switch in ACL configuration mode to create an ACL named test1.
    switch(config)# ip access-list test1
switch(config-acl-test1)#
  • This command places the switch in Standard-ACL-configuration mode to create a Standard ACL named stest1.
    switch(config)# ip access-list standard stest1
switch(config-std-acl-stest1)#
  • This command places the switch in MAC-ACL configuration mode to create an MAC ACL named mtest1.
    switch(config)# mac access-list mtest1
switch(config-mac-acl-mtest1)#
Saving List Modifications

ACL configuration modes are group-change modes. Changes made in a group-change mode are saved by exiting the mode. To exit the group-change mode, changes can also be discarded using the `abort` command instead of exit.

Examples
  • These commands enter the first three rules into a new ACL.
    switch(config-acl-test1)# permit ip 10.10.10.0/24 any
switch(config-acl-test1)# permit ip any host 10.20.10.1
switch(config-acl-test1)# deny ip host 10.10.10.1 host 10.20.10.1

  • To view the edited list, type show.

    switch(config-acl-test1)# show
IP Access List test1
        10 permit ip 10.10.10.0/24 any
        20 permit ip 10.30.10.0/24 host 10.20.10.1
        30 deny ip host 10.10.10.1 host 10.20.10.1
        40 permit ip any any

Because the changes were not yet saved, the ACL remains empty, as shown by show ip access-lists.

switch(config-acl-test1)# show ip access-lists test1
switch(config-acl-test1)#

To save all current changes to the ACL and exit ACL configuration mode, type exit.

switch(config-acl-test1)# exit
switch(config)# show ip access-lists test1
IP Access List test1
        10 permit ip 10.10.10.0/24 any
        20 permit ip 10.30.10.0/24 host 10.20.10.1
        30 deny ip host 10.10.10.1 host 10.20.10.1
        40 permit ip any any
Discarding List Changes

The abort command exits ACL configuration mode without saving pending changes.

Examples
  • These commands enter the first three rules into a new ACL.
    switch(config-acl-test1)# permit ip 10.10.10.0/24 any
switch(config-acl-test1)# permit ip any host 10.20.10.1
switch(config-acl-test1)# deny ip host 10.10.10.1 host 10.20.10.1

  • To view the edited list, type show.

    switch(config-acl-test1)# show
IP Access List test1
        10 permit ip 10.10.10.0/24 any
        20 permit ip 10.30.10.0/24 host 10.20.10.1
        30 deny ip host 10.10.10.1 host 10.20.10.1
        40 permit ip any any

To discard the changes, enter abort. If the ACL existed before entering ACL-configuration mode, abort restores the version that existed before entering ACL-configuration mode. Otherwise, show ip access-lists shows the ACL was not created. 

switch(config-acl-test1)# abort
switch(config)#

Modifying an ACL

An existing ACL, including those currently applied to interfaces, can be modified by entering the appropriate configuration mode for the ACL as described in Creating and Opening a List. By default, while an ACL is being modified all traffic is blocked on any interface to which the ACL has been applied.

Permit All Traffic During ACL Update

Because blocking ports during ACL modifications can result in packet loss and can interfere with features such as routing and dynamic NAT, 7050X, 7060X, 7150, 7250X, 7280, 7280R, 7300X, 7320X, and 7500 series switches can be configured instead to permit all traffic on Ethernet and VLAN interfaces while ACLs applied to those interfaces are being modified. This is done with the hardware access-list update default-result permit command.

These commands add deny rules to the appropriate ACL:
These commands add permit rules to the appropriate ACL:
Adding a Rule

To append a rule to the end of a list, enter the rule without a sequence number while in ACL configuration mode for the list. The new rule’s sequence number is derived by adding 10 to the last rule’s sequence number.

Examples
  • This command configures the switch to permit all traffic during ACL modifications on interfaces to which the ACL has been applied. The rules in modified ACLs are applied after exiting ACL configuration mode, and after the ACL rules have been populated in hardware.
    switch(config)# hardware access-list update default-result permit
  • These commands enter the first three rules into a new ACL.
    switch(config-acl-test1)# permit ip 10.10.10.0/24 any
switch(config-acl-test1)# permit ip any host 10.20.10.1
switch(config-acl-test1)# deny ip host 10.10.10.1 host 10.20.10.1

  • To view the edited list, type show.

    switch(config-acl-test1)# show
IP Access List test1
        10 permit ip 10.10.10.0/24 any
        20 permit ip any host 10.20.10.1
        30 deny ip host 10.10.10.1 host 10.20.10.1
  • This command appends a rule to the ACL. The new rule’s sequence number is 40.
    switch(config-acl-test1)# permit ip any any
switch(config-acl-test1)# show
IP Access List test1
        10 permit ip 10.10.10.0/24 any
        20 permit ip any host 10.20.10.1
        30 deny ip host 10.10.10.1 host 10.20.10.1
        40 permit ip any any
Inserting a Rule

To insert a rule into a ACL, enter the rule with a sequence number between the existing rules’ numbers.

Example
This command inserts a rule between the first two rules by assigning it the sequence number 15.
Switch(config-acl-test1)# 15 permit ip 10.30.10.0/24 host 10.20.10.1
Switch(config-acl-test1)# show
IP Access List test1
        10 permit ip 10.10.10.0/24 any
        15 permit ip 10.30.10.0/24 host 10.20.10.1
        20 permit ip any host 10.20.10.1
        30 deny ip host 10.10.10.1 host 10.20.10.1
        40 permit ip any any
Deleting a Rule
To remove a rule from the current ACL, perform one of these commands:
  • Enter no, followed by the sequence number of the rule to be deleted.
  • Enter no, followed by the rule be deleted.
  • Enter default, followed by the rule to be deleted.
Examples
  • These equivalent commands remove rule 20 from the list.
    switch(config-acl-test1)# no 20
switch(config-acl-test1)# no permit ip any host 10.20.10.1
switch(config-acl-test1)# default permit ip any host 10.20.10.1

  • This ACL results from entering one of the preceding commands.

    switch(config-acl-test1)# show
ip access list test1
        10 permit ip 10.10.10.0/24 any
        15 permit ip 10.30.10.0/24 host 10.20.10.1
        30 deny ip host 10.10.10.1 host 10.20.10.1
        40 permit ip any any
Resequencing Rule Numbers

Sequence numbers determine the order of the rules in an access control list. After a list editing session where existing rules are deleted and new rules are inserted between existing rules, the sequence number distribution may not be uniform. Resequencing rule numbers changes the sequence number of rules to provide a constant difference between adjacent rules. The resequence (ACLs) command adjusts the sequence numbers of ACL rules.

Example
The resequence (ACLs) command renumbers rules in the test1 ACL. The sequence number of the first rule is 100; subsequent rules numbers are incremented by 20.
switch(config-acl-test1)# show
IP Access List test1
        10 permit ip 10.10.10.0/24 any
        25 permit ip any host 10.20.10.1
        30 deny ip host 10.10.10.1 host 10.20.10.1
        50 permit ip any any
        90 remark end of list
switch(config-acl-test1)# resequence 100 20
switch(config-acl-test1)# show
IP Access List test1
        100 permit ip 10.10.10.0/24 any
        120 permit ip any host 10.20.10.1
        140 deny ip host 10.10.10.1 host 10.20.10.1
        160 permit ip any any
        180 remark end of list

ACL Rule Tracking Configuration

ACL rules provide a log option that produces a syslog message about the packets matching packet. ACL logging creates a syslog entry when a packet matches an ACL rule with logging enabled.

This feature is currently available on Arad switches and on 7100 series switches. On 7100 series switches, matches are logged only on ingress, not on egress.

Example
This command creates an ACL rule with logging enabled.
switch(config-acl-test1)# 15 permit ip 10.30.10.0/24 host 10.20.10.1 log
switch(config-acl-test1)#
The format of the generated Syslog message depends on the ACL type and the specified protocol:
  • Messages generated by a TCP or UDP packet matching an IP ACL use this format:

    IPACCESS: list acl   intf  filter protocol src-ip(src_port)  ->   dst-ip(dst_port)

  • Messages generated by ICMP packets matching an IP ACL use this format:

    IPACCESS: list acl   intf filter icmp src-ip(src-port)   ->   dst-ip(dst-port) type= n code= m

  • Messages generated by all other IP packets matching an IP ACL use this format:

    IPACCESS: list acl   intf   filter protocol src-ip -> dst-ip

  • Messages generated by packets matching a MAC ACL use this format:

    MACACCESS: list acl   intf filter vlan ether src_mac ->   dst_mac

  • Messages generated by a TCP or UDP packet matching a MAC ACL use this format:

    MACACCESS: list acl  intf filter vlan ether ip-prt   src-mac src-ip : src-prt -> dst-mac dst-ip : dst-prt

  • Messages generated by any other IP packet matching a MAC ACL use this format:

    MACACCESS: list acl  intf filtervlan ether src_mac src_ip -> dst_mac dst_ip

Variables in the Syslog messages display the following values:
  • acl     Name of ACL.
  • intf     Name of interface that received the packet.
  • filter     Action triggered by ACL (denied or permitted).
  • protocol     IP protocol specified by packet.
  • vlan     Number of VLAN receiving packet.
  • ether     EtherType protocol specified by packet.
  • src-ip and dst-ip     source and destination IP addresses.
  • src-prt and dst-prt     source and destination ports.
  • src-mac and dst-mac     source and destination MAC addresses.

ACLs provide a command that configures its counter state (counting or non-counting). The counter state applies to all rules in the ACL. The initial state for new ACLs is non-counting.

The counters per-entry (ACL configuration modes) command places the ACL in counting mode.

This command places the configuration mode ACL in counting mode.
switch(config-acl-test1)# counters per-entry
switch(config-acl-test1)#exit
switch(config-acl-test1)#show ip access-list test1
IP Access List test1
        counters per-entry
        10 permit ip 10.10.10.0/24 any
        20 permit ip any host 10.20.10.1
        30 deny ip host 10.10.10.1 host 10.20.10.1
        40 permit ip any any
        50 remark end of list

The clear ip access-lists counters and clear ipv6 access-lists counters commands set the IP access list counters to zero for the specified IP access list.

This command clears the ACL counter for the test1 ACL.
switch(config)# clear ip access-lists counters test1
switch(config)#

Displaying ACLs

ACLs can be displayed by a show running-config command. The show ip access-lists also displays ACL rosters and contents, as specified by command parameters.

When editing an ACL, the show (ACL configuration modes) command displays the current or pending list, as specified by command parameters.

Displaying a List of ACLs

To display the roster of ACLs on the switch, enter show ip access-lists with the summary option.

Example
This command lists the available access control lists.
switch(config)# show ip access-list summary
IPV4 ACL default-control-plane-acl
        Total rules configured: 12
        Configured on: control-plane
        Active on    : control-plane

IPV4 ACL list2
        Total rules configured: 3

IPV4 ACL test1
        Total rules configured: 6

IPV4 ACL test_1
        Total rules configured: 1

IPV4 ACL test_3
        Total rules configured: 0
switch(config)#
Displaying Contents of an ACL
These commands display ACL contents.
Each command can display the contents of one ACL or of all ACLs of the type specified by the command:
  • To display the contents of one ACL, enter show ip access-lists followed by the name of the ACL.
  • To display the contents of all ACLs on the switch, enter the command without any options.

ACLs that are in counting mode display the number of inbound packets each rule in the list matched and the elapsed time since the last match.

Examples
  • This command displays the rules in the default-control-plane-acl ACL.
    switch# show ip access-lists default-control-plane-acl
IP Access List default-control-plane-acl [readonly]
        counters per-entry
        10 permit icmp any any
        20 permit ip any any tracked [match 1725, 0:00:00 ago]
        30 permit ospf any any
        40 permit tcp any any eq ssh telnet www snmp bgp https
        50 permit udp any any eq bootps bootpc snmp [match 993, 0:00:29 ago]
        60 permit tcp any any eq mlag ttl eq 255
        70 permit udp any any eq mlag ttl eq 255
        80 permit vrrp any any
        90 permit ahp any any
        100 permit pim any any
        110 permit igmp any any [match 1316, 0:00:23 ago]
        120 permit tcp any any range 5900 5910
  • This command displays the rules in all ACLs on the switch.
    switch# show ip access-lists
IP Access List default-control-plane-acl [readonly]
        counters per-entry
        10 permit icmp any any
        20 permit ip any any tracked [match 1371, 0:00:00 ago]
        30 permit ospf any any
        40 permit tcp any any eq ssh telnet www snmp bgp https
        50 permit udp any any eq bootps bootpc snmp
        60 permit tcp any any eq mlag ttl eq 255
        70 permit udp any any eq mlag ttl eq 255
        80 permit vrrp any any
        90 permit ahp any any
        100 permit pim any any
        110 permit igmp any any [match 1316, 0:00:23 ago]
        120 permit tcp any any range 5900 5910

IP Access List list2
        10 permit ip 10.10.10.0/24 any
        20 permit ip 10.30.10.0/24 host 10.20.10.1
        30 permit ip any host 10.20.10.1
        40 deny ip host 10.10.10.1 host 10.20.10.1
        50 permit ip any any

IP Access List test1
Switch(config)#
Displaying ACL Modifications
While editing an ACL in ACL-configuration mode, the show (ACL configuration modes) command provides options for displaying ACL contents.
  • To display the list, as modified in ACL configuration mode, enter show or show pending.
  • To display the list, as stored in running-config, enter show active.
  • To display differences between the pending list and the stored list, enter show diff.
Examples

The examples in this section assume these ACL commands were previously entered.

These commands are stored in the configuration: 

10 permit ip 10.10.10.0/24 any
20 permit ip any host 10.21.10.1
30 deny ip host 10.10.10.1 host 10.20.10.1
40 permit ip any any
50 remark end of list

The current edit session removed this command. This change is not yet stored to running-config: 

20 permit ip any host 10.21.10.1

The current edit session added these commands ACL. They are not yet stored to running-config: 

20 permit ip 10.10.0.0/16 any
25 permit tcp 10.10.20.0/24 any
45 deny pim 239.24.124.0/24 10.5.8.4/30
This command displays the pending ACL, as modified in ACL configuration mode.
switch(config-acl-test_1)# show pending
IP Access List test_1
        10 permit ip 10.10.10.0/24 any
        20 permit ip 10.10.0.0/16 any
        25 permit tcp 10.10.20.0/24 any
        30 deny ip host 10.10.10.1 host 10.20.10.1
        40 permit ip any any
        45 deny pim 239.24.124.0/24 10.5.8.4/30
        50 remark end of list
This command displays the ACL, as stored in the configuration.
switch(config-acl-test_1)#show active
IP Access List test_1
        10 permit ip 10.10.10.0/24 any
        20 permit ip any host 10.21.10.1
        30 deny ip host 10.10.10.1 host 10.20.10.1
        40 permit ip any any
        50 remark end of list

This command displays the difference between the saved and modified ACLs.

  • Rules added to the pending list are denoted with a plus sign (+).
  • Rules removed from the saved list are denoted with a minus sign (-).
    switch(config-acl-test_1)#show diff
---
+++
@@ -1,7 +1,9 @@
 IP Access List test_1
         10 permit ip 10.10.10.0/24 any
-        20 permit ip any host 10.21.10.1
+        20 permit ip 10.10.0.0/16 any
+        25 permit tcp 10.10.20.0/24 any
         30 deny ip host 10.10.10.1 host 10.20.10.1
         40 permit ip any any
+        45 deny pim 239.24.124.0/24 10.5.8.4/30

configuring Per-Port Per-VLAN QoS

To configure per-port per-VLAN QoS, first, configure the ACL policing for QoS, and then apply the policy-map on a single Ethernet or port-channel interfaces on a per-port per-VLAN basis. The per port per VLAN QoS allows a class-map to match traffic for a single VLAN or for a range of VLANs separated by commas. Per-port per-VLAN works with QoS-based class-maps only.

To configure per-port per-VLAN QoS on DCS-7280(R) and DCS-7500(R), change the TCAM profile to QoS as shown below.
  1. Change the TCAM profile to QoS.
    switch# config
switch(config)# hardware tcam profile qos
  2. Create an ACL and then match the traffic packets based on the VLAN value and the VLAN mask configured in the ACL.
    switch(config)# ip access-list acl1
switch(config-acl-acl1)# permit vlan 100 0xfff ip any any
switch(config-acl-acl1)# exit
  3. Similarly, create a class-map and then match the traffic packets based on the range of VLAN values configured in the class-map.
    switch(config)# class-map match-any class1
switch(config-cmap-qos-class1)# match vlan 20-40, 1000-1250, 2000
switch(config-cmap-qos-class1)# exit

Displaying Per-Port Per-VLAN QoS

The following show commands display the status, traffic hit counts, tcam profile information, and policy-maps configured on an interface.

The show policy-map command displays the policy-map information of the configured policy-map.

Examples
  • switch# show policy-map policy1
Service-policy policy1
Class-map: class1 (match-any)
Match: ip access-group name acl1
Police cir 512000 bps bc 96000 bytes
Class-map: class-default (match-any)

  • The show policy-map interface command displays the policy-map configured on an interface.

    switch# show policy-map interface ethernet 1
Service-policy input: p1
Hardware programming status: Successful
Class-map: c2001 (match-any)
Match: vlan 2001 0xfff
set dscp 4
Class-map: c2002 (match-any)
Match: vlan 2002 0xfff
set dscp 8
Class-map: c2003 (match-any)
Match: vlan 2003 0xfff
set dscp 12

configuring Mirror Access Control Lists

Access Control Lists (ACLs) are configured to permit or deny traffic between source and destination ports on Strata-based platforms. Mirror ACLs are used in mirroring traffic by matching VLAN ID of the configured ACLs. Mirror ACLs are applied for IPv4, IPv6, and MAC ACLs.

Note:Mirror ACLs work in receiving direction only.
Examples
  • These commands configure ACL to permit VLAN traffic between any source and destination host.
    switch(config)# ip access-list acl1
switch(config-acl-acl1)# permit vlan 1234 0x0 ip any any
  • These commands configure monitor session sess1 with Ethernet 1 as source port and Ethernet 2 as destination port for an ingress ip acl_1.
    switch(config)# monitor session sess1 source ethernet 1 rx ip access-group acl1
switch(config)# monitor session sess1 destination ethernet 2

Applying ACLs

Access Control Lists become active when they are assigned to an interface or subinterface or to the control plane. This section describes the process of adding and removing ACL interface assignments.

Applying an ACL to an Interface

The switch must be in interface configuration mode to assign an ACL to an interface or subinterface.
  • The ip access-group command applies the specified IP or standard IP ACL to the configuration mode interface or subinterface.
  • The ip access-group command applies the specified IP or standard IP ACL to the conntrol-plane traffic.
  • The mac access-group command applies the specified MAC ACL to the configuration mode interface.

IPv4, IPv6, and MAC ACLs are separately applied for inbound and outbound packets. An interface or subinterface can be assigned with multiple ACLs, with a limit of one ACL per packet direction per ACL type. Egress ACLs are supported on a subset of all available switches. IPv6 egress ACLs have limited availability, and IPv6 egress ACLs applied to routed interfaces or subinterfaces across the same chip on the DCS-7500E and the DCS-7280E series can be shared. In addition to that, the DSCP value can match on IPv6 egress ACLs. This result in a more efficient utilization of system resources, and is particularly useful for environments with few, potentially large, IPv6 egress ACLs applied across multiple routed interfaces.

Examples

  • These commands assign test1 ACL to interface ethernet 3, then verify the assignment.
    switch(config)# interface ethernet 3
switch(config-if-Et3)# ip access-group test1 in
switch(config-if-Et3)# show running-config interfaces ethernet 3
interface Ethernet3
   ip access-group test1 in
switch(config-if-Et3)#
  • These commands place the switch in control plane configuration mode and applies the ACL assignment to the control-plane traffic. 
    switch(config)# control-plane
switch(config-cp)# ip access-group test_cp in
  • This command enables shared ACLs.
    switch(config)# hardware access-list resource sharing vlan ipv6 out
switch(config)#
  • This command disables shared ACLs.
    switch(config)# no hardware access-list resource sharing vlan ipv6 out
switch(config)#
  • These commands apply an IPv4 ACL named test_ACL to ingress traffic on interface ethernet 5.1.
    switch(config)# interface ethernet 5.1
switch(config-if-Et5.1)# ipv4 access-group test_ACL in
switch(config-if-Et5.1)#

Removing an ACL from an Interface

The no ip access-group command removes an IP ACL assignment statement from running-config for the configuration mode interface. After an ACL is removed, the interface is not associated with an IP ACL.

The no mac ip access-group command removes a MAC ACL assignment statement from running-config for the configuration mode interface. After a MAC ACL is removed, the interface is not associated with an MAC ACL.

To remove an ACL from the control plane, enter the no ip access-group command in control plane configuration mode. Removing the control plane ACL command from running-config reinstates default-control-plane-acl as the control plane ACL.

Examples

  • These commands remove the assigned IPv4 ACL from interface ethernet 3.
    switch(config)# interface ethernet 3
switch(config-if-Et3)# no ip access-group test in
switch(config-if-Et3)#
  • These commands place the switch in control plane configuration mode and remove the ACL assignment from running-config, restoring default-control-plane-acl as the control plane ACL.
    switch(config)# control-plane
switch(config-cp)# no ip access-group test_cp in
switch(config-cp)#

Service ACLs

These sections describe Service ACLs:

Service Access Control List Description

Service ACL enforcement is a feature added to a control plane service (the SSH server, the SNMP server, routing protocols, etc) that allows the switch administrator to restrict the processing of packets and connections by the control plane processes that implement that service. The control plane program run by the control plane process checks already received packets and connections against a user configurable Access Control List (ACL), a Service ACL. The Service ACL contains permit and deny rules matching any of the source address, destination address, and TCP or UDP ports of received packets or connections. After receiving a packet or connection, the control plane process evaluates the packet or connection against the rules of the Service ACL configured for the control plane process, and if the received packet or connection matches a deny rule the control plane process drops or closes it without further processing.

Control Plane Process Enforced Access Control enables the system administrator to restrict which systems on the network can access the services provided by the switch. Each service has its own access control list, giving the system administrator fine grained control over access to the switch's control plane services. The CLI for this uses the familiar pattern of access control lists assigned for a specific purpose, in this case for each control plane service.

configuring Service ACLs and Displaying Status and Counters

SSH Server

To apply the SSH server Service ACLs for IPv4 and IPv6 traffic, use the ip access-group (Service ACLs) and ipv6 access-group (Service ACLs) commands in mgt-ssh configuration mode as shown below.

switch(config)# management ssh
switch(config-mgmt-ssh)# ip access-group <acl_name> [vrf <vrf_name>] inswitch(config-mgmt-ssh)#ipv6 access-group <acl_name> [vrf <vrf_name>] in

In Release eos-4.19.0, all VRFs are required to use the same SSH server Service ACL. The Service ACL assigned without the vrf keyword is applied to all VRFs where the SSH server is enabled.

To display the status and counters of the SSH server Service ACLs, use the following commands.

switch> show management ssh ip access-list
switch> show management ssh ipv6 access-list

SNMP Server

To apply the SNMP server Service ACLs to restrict which hosts can access SNMP services on the switch, use the snmp-server community command as shown below.

snmp-server community community-name [view viewname] [ro | rw] acl_name

snmp-server community community-name [view viewname] [ro | rw] ipv6 ipv6_acl_name

EAPI

To apply Service ACLs to the eos application programming interface (EAPI) server, use the ip access-group (Service ACLs) and ipv6 access-group (Service ACLs) commands as shown below.

switch(config)# management api http-commands
switch(config-mgmt-api-http-cmds)# vrf <vrf_name>
switch(config-mgmt-api-http-cmds-vrf-<vrf>)# ip access-group <acl_name>
switch(config-mgmt-api-http-cmds-vrf-<vrf>)# ipv6 access-group <ipv6_acl_name>

To display the status and counters of the EAPI server Service ACLs, use the following commands.

switch> show management api http-commands ip access-list
switch> show management api http-commands ipv6 access-list

BGP

To apply Service ACLs for controlling connections to the BGP routing protocol agent, use the ip access-group (Service ACLs) and ipv6 access-group (Service ACLs) commands as shown below.

switch(config)# router bgp <asn>
switch(config-router-bgp)# ip access-group <acl_name>
switch(config-router-bgp)# ipv6 access-group <ipv6_acl_name>
switch(config-router-bgp)# vrf <vrf_name>
switch(config-router-bgp-vrf-<vrf>)# ip access-group <acl_name>
switch(config-router-bgp-vrf-<vrf>)# ipv6 access-group <ipv6_acl_name>

To display the status and counters of the BGP routing protocol Service ACLs, use the following commands.

switch> show bgp ipv4 access-list
switch> show bgp ipv6 access-list

UCMP auto adjust for BGP

UnequalCcost Multi-Path (UCMP) for BGP forwards traffic based on weight assignments for next hops of routes of ECMP traffic. The weights are programmed in the FIB. By disseminating BGP link-bandwidth extended community attribute information with BGP routes, the receiver device of all routes, programs the next hops in the FIB using the received link-bandwidth values. The percentage of interface speed is appended to the received link bandwidth extended community value of the route. The weight ratio of the traffic sent over egress ports is adjusted to forward more traffic towards the peer with higher interface speed.

configuring UCMP auto adjust for BGP

The following command enables the weight adjustment.

This command configures the adjust auto to 62.3 percent.

switch(config-router-bgp)# neighbor group1 link-bandwidth adjust auto percent 62.3

PERCENT is a float value between 0.0 to 100.0 and is optional.

OSPF

To apply Service ACLs for controlling packets processed by the OSPF routing protocol agent, use the ip access-group (Service ACLs) and ipv6 access-group (Service ACLs) commands as shown below.

switch(config)# router ospf <id>
switch(config-router-ospf)# ip access-group <acl_name>
switch(config-router-ospf)# ipv6 access-group <ipv6_acl_name>

When using VRFs, each per-VRF OSPF instance must be assigned its Service ACL explicitly.

To display the status and counters of the OSPF routing protocol Service ACLs, use the following commands.

switch> show ospf ipv4 access-list
switch> show ospf ipv6 access-list

PIM

To apply Service ACLs for controlling packets processed by the PIM routing protocol agent, use the access-group command as shown below.

switch(config)# router pim
switch(config-router-pim)# ipv4
switch(config-router-pim-ipv4)# access-group <acl_name>
switch(config-router-pim-ipv4)# vrf <vrf_name>
switch(config-router-pim-vrf-<vrf>)# ipv4
switch(config-router-pim-vrf-<vrf>-ipv4)# access-group <acl_name>

To display the status and counters of the PIM routing protocol Service ACLs, use the following commands.

switch> show ip pim access-list

IGMP

To apply Service ACLs for controlling packets processed by the IGMP management protocol agent, use the ip igmp access-group command as shown below.

switch(config)# router igmp
switch(config-router-igmp)# ip igmp access-group <acl_name>
switch(config-router-igmp)# vrf <vrf_name>
switch(config-router-igmp-vrf-<vrf>)# ip igmp access-group <acl_name>

To display the status and counters of the IGMP management protocol Service ACLs, use the following commands.

switch> show ip igmp access-list

DHCP Relay

To apply Service ACLs for controlling packets processed by the DHCP relay agent, use the ip dhcp relay access-group and ipv6 dhcp relay access-group commands as shown below.

switch(config)# ip dhcp relay access-group <acl_name> [vrf <vrf_name>]
switch(config)# ipv6 dhcp relay access-group <acl_name> [vrf <vrf_name>]

To display the status and counters of the DHCP relay agent Service ACLs, use the following commands.

switch> show ip dhcp relay access-list
switch> show ipv6 dhcp relay access-list

LDP

To apply Service ACLs for controlling packets and connections processed by the LDP MPLS label distribution protocol, use thecommand as shown below.

ip access-group (Service ACLs)

switch(config)# mpls ldp 
switch(config-mpls-ldp)# ip access-group <acl_name>

To display the status and counters of the LDP Service ACLs, use the following command.

switch> show mpls ldp access-list

LANZ

To apply Service ACLs for controlling connections accepted by the LANZ agent, use the ip access-group (Service ACLs) and ipv6 access-group (Service ACLs) commands as shown below.

switch(config)# queue-monitor streaming
switch(config-qm-streaming)# ip access-group <acl_name>
switch(config-qm-streaming)# ipv6 access-group <ipv6_acl_name>

To display the status and counters of the LDP Service ACLs, use the following command.

switch> show queue-monitor streaming access-lists

MPLS Ping and Traceroute

To apply Service ACLs for controlling connections accepted by the MPLS Ping agent, use the ip access-group (Service ACLs) and ipv6 access-group (Service ACLs) commands as shown below.

switch(config)# mpls ping
switch(config-mpls-ping)# ip access-group <acl_name> [vrf <vrf_name>]
switch(config-mpls-ping)# ipv6 access-group <ipv6_acl_name> [vrf <vrf_name>]

Telnet Server

To apply Service ACLs to the Telnet server, use the ip access-group (Service ACLs) and ipv6 access-group (Service ACLs) commands as shown below.

switch(config)# management telnet
switch(config-mgmt-telnet)# ip access-group <acl_name> [vrf <vrf_name>] in
switch(config-mgmt-telnet)# ipv6 access-group <ipv6_acl_name> [vrf <vrf_name>] in

In eos 4.19.0, all VRFs are required to use the same Telnet server Service ACL. The Service ACL assigned without the vrf keyword is applied to all VRFs where the Telnet server is enabled.

To display the status and counters of the LDP Service ACLs, use the following commands.

switch> show management telnet ip access-list
switch> show management telnet ipv6 access-list

Sub-interface ACLs

This Sub-interface ACLs feature enables ACL functionality on subinterfaces.

configuring Sub-interface ACLs

Configure the ACLs on subinterfaces, use the following command:

ip|ipv6 access-group acl-name in | out

To unconfigure the ACLs on subinterfaces, use the following command:

no ip|ipv6 access-group in | out

Sub-interface ACLs Limitations

The sub-interface ACLs feature contains the following limitations:
  • Egress IPv4 ACLs on subinterfaces are not supported when sharing mode is disabled for Egress IPv4 RACLs.
  • Egress IPv6 ACL deny logging is not supported on subinterfaces.
  • Blocking traffic while modifying ACLs is not supported on Egress IPv4 ACLs on subinterfaces.

Sub-interface ACLs Show Commands

The show ip|ipv6 access-lists displays the summary of a configured ACL including the subinterface on which the ACL is configured and active.

show ip|ipv6 access-lists acl-name summary

Examples

switch(config)# show ip access-lists acl1 summary 
IPV4 ACL acl1
 Total rules configured: 1
 Configured on Ingress: Et5.1
 Active on Ingress: Et5.1
switch(config)# show ipv6 access-lists acl1 summary 
IPV6 ACL acl1
 Total rules configured: 1
 Configured on Egress: Et5.1
 Active on Egress: Et5.1

RACL Sharing on SVIs

IPv4 Ingress Sharing

The IPv4 ingress sharing optimizes the utilization of hardware resources by sharing the hardware resources between different VLAN interfaces when they have same ACL attached.

Larger deployments are benefited with this function, where IPv4 ingress sharing is applied on multiple SVIs with member interfaces on same forwarding ASIC. For example, a trunk port carrying multiple VLANs and an ingress sharing is applied on all VLANs, it occupies lesser hardware resources irrespective of number of VLANs. By default, IPv4 ingress sharing is disabled on the switches.

To enable IPv4 Ingress Sharing use no hardware access-list resource sharing vlan in command. Note, enabling or disabling the IPv4 ingress sharing requires the restart of software agents on the switches which is a disruptive process and will impact the traffic forwarding. The no form of the command disables the IPv4 ingress sharing on the switch. To display the IPv4 ingress sharing information use show platform trident command on the switch.

IPv4 Egress Sharing

The IPv4 Egress Sharing optimizes the utilization of hardware resources by sharing TCAM entries for a group of SVIs on which IPv4 ACLs shared. The TCAM entries are shared for all the SVIs per chip, hence, saving a lot of hardware resources and enabling ACLs to scale to a larger configurations.

Larger deployments are benefited, where IPv4 Egress Sharing is applied on multiple SVIs with member interfaces on same forwarding ASIC. For example, a trunk port carrying multiple VLANs, and when Egress Sharing is applied on all VLANs it occupies lesser hardware resources irrespective of number of VLANs. By default, IPv4 Egress Sharing is enabled on the switches. However, both IPv4 Egress Sharing and uRPF cannot be enabled at the same time. Disabling IPv4 RACL sharing will allow uRPF configuration and make sure RACL configuration, non-shared mode, is configured at the same time.

To enable unicast Reverse Path Forwarding (uRPF) on the switch, the IPv4 Egress Sharing must be disabled using the no hardware access-list resource sharing vlan ipv4 out command.

To enable IPv4 Egress Sharing if previously disabled from the default configuration, use hardware access-list resource sharing vlan ipv4 out command. Note, enabling or disabling the IPv4 Egress Sharing requires the restart of software agents on the switches which is a disruptive process and will impact the traffic forwarding.

The following show commands can be used to verify the IPv4 Egress Sharing information on the switch.

configuring IPv4 Egress Sharing

Use hardware access-list resource sharing vlan ipv4 out command to enable the IPv4 Egress Sharing on the switch. By default, IPv4 Egress Sharing is enabled on the switche.The no form of the command disables the IPv4 Egress Sharing on the switch and user is allowed to configure the uRPF on the switch.

Displaying IPv4 Egress Sharing Information

Examples
  • The show ip access-lists command displays the list of all the configured IPv4 ACLs.
    switch# show ip access-lists summary
IPV4 ACL default-control-plane-acl [readonly]
 Total rules configured: 17
 Configured on Ingress: control-plane(default VRF)
 Active on Ingress: control-plane(default VRF)

IPV4 ACL ipAclLimitTest
 Total rules configured: 0
 Configured on Egress: Vl2148,2700
 Active on Egress: Vl2148,2700
  • The show vlan command displays the list of all the member interfaces under each SVI.
    switch# show vlan
VLAN  Name           Status    Ports
----- -------------- --------- -----------------
1     default        active
2148  VLAN2148       active    Cpu, Et1, Et26
2700  VLAN2700       active    Cpu, Et18
  • The show platform arad acl tcam command displays the number of TCAM entries (hardware resources) occupied by the ACL on each forwarding ASIC and the percentage of TCAM utilization per forwarding ASIC.
    switch# show platform arad acl tcam detail
ip access-list ipAclLimitTest (Shared RACL, 0 rules, 1 entries, direction out, 
state success, Acl Label 2)
Fap: Arad0, Shared: true, Interfaces: Vl2148, Vl2700
Bank Offset Entries
0         0       1
Fap: Arad1, Shared: true, Interfaces: Vl2148
Bank Offset Entries
0         0       1

switch# show platform arad acl tcam summary
The total number of TCAM lines per bank is 1024.
========================================================
Arad0:
========================================================
 Bank   Used                  Used %             Used By
    0      1                       0   IP Egress PACLs/RACLs
Total Number of TCAM lines used is: 1
========================================================
Arad1:
========================================================
 Bank   Used                   Used %            Used By
    0      1                        0   IP Egress PACLs/RACLs
Total Number of TCAM lines used is: 1
  • The show ip route command displays the unicast ip routes installed in the system.
    switch# show ip route
VRF name: default
Codes: C - connected, S - static, K - kernel,
 O - OSPF, IA - OSPF inter area, E1 - OSPF external type 1,
 E2 - OSPF external type 2, N1 - OSPF NSSA external type 1,
 N2 - OSPF NSSA external type2, B I - iBGP, B E - eBGP,
 R - RIP, I - ISIS, A B - BGP Aggregate, A O - OSPF Summary,
 NG - Nexthop Group Static Route

Gateway of last resort is not set
 C 10.1.0.0/16 is directly connected, Vlan2659
 C 10.2.0.0/16 is directly connected, Vlan2148
 C 10.3.0.0/16 is directly connected, Vlan2700
 S 172.17.0.0/16 [1/0] via 172.24.0.1, Management1
 S 172.18.0.0/16 [1/0] via 172.24.0.1, Management1
 S 172.19.0.0/16 [1/0] via 172.24.0.1, Management1
 S 172.20.0.0/16 [1/0] via 172.24.0.1, Management1
 S 172.22.0.0/16 [1/0] via 172.24.0.1, Management1
 C 172.24.0.0/18 is directly connected, Management1
  • The show platform arad ip route command displays the platform unicast forwarding routes.
    switch# show platform arad ip route
Tunnel Type: M(mpls), G(gre)
 -------------------------------------------------------------------------------
|                                Routing Table                                       |               |
|------------------------------------------------------------------------------
|VRF|   Destination    |      |                    |     | Acl   |                 | 
ECMP| FEC | Tunnel
| ID|   Subnet         | Cmd  |       Destination  | VID | Label |  MAC / CPU Code 
|Index|Index|T Value
 
--------------------------------------------------------------------------------
|0  |0.0.0.0/8          |TRAP | CoppSystemL3DstMiss|0    | - | ArpTrap | - |1031 | -
|0  |10.1.0.0/16        |TRAP | CoppSystemL3DstMiss|2659 | - | ArpTrap | - |1030 | -
|0  |10.2.0.0/16        |TRAP | CoppSystemL3DstMiss|2148 | - | ArpTrap | - |1026 | -
|0  |10.3.0.0/16        |TRAP | CoppSystemL3DstMiss|2700 | - | ArpTrap | - |1034 | -
|0  |127.0.0.0/8        |TRAP | CoppSystemL3DstMiss|0    | - | ArpTrap | - |1031 | -
|0  |172.17.0.0/16      |TRAP | CoppSystemL3DstMiss|0    | - | ArpTrap | - |1025 | -
|0  |172.18.0.0/16      |TRAP | CoppSystemL3DstMiss|0    | - | ArpTrap | - |1025 | -
|0  |172.19.0.0/16      |TRAP | CoppSystemL3DstMiss|0    | - | ArpTrap | - |1025 | -
|0  |172.20.0.0/16      |TRAP | CoppSystemL3DstMiss|0    | - | ArpTrap | - |1025 | -
|0  |172.22.0.0/16      |TRAP | CoppSystemL3DstMiss|0    | - | ArpTrap | - |1025 | -
|0  |172.24.0.0/18      |TRAP | CoppSystemL3DstMiss|0    | - | ArpTrap | - |1032 | -
|0  |0.0.0.0/0          |TRAP | CoppSystemL3LpmOver|0    | - | SlowReceive | - 
|1024 | -
|0  |10.1.0.0/32*       |TRAP | CoppSystemIpBcast  |0    | - | BcastReceive | - 
|1027 | -
|0  |10.1.0.1/32*       |TRAP | CoppSystemIpUcast  |0    | - | Receive | - |32766| -
|0  |10.1.255.1/32*     |ROUTE| Po1                |2659 |4094 | 00:1f:5d:6b:ce:45 
| - |1035 | -
|0  |10.1.255.255/32*   |TRAP | CoppSystemIpBcast  |0    | - | BcastReceive | - 
|1027 | -
|0  |10.2.0.0/32*       |TRAP | CoppSystemIpBcast  |0    | - | BcastReceive | - 
|1027 | -
|0  |10.2.0.1/32*       |TRAP | CoppSystemIpUcast  |0    | - | Receive | - |32766| -
|0  |10.2.255.1/32*     |ROUTE| Et1                |2148 |2 | 00:1f:5d:6d:54:dc | 
- |1036 | -
|0  |10.2.255.255/32*   |TRAP | CoppSystemIpBcast  |0    | - | BcastReceive | - 
|1027 | -
|0  |10.3.0.0/32*       |TRAP | CoppSystemIpBcast  |0    | - | BcastReceive | - 
|1027 | -
|0  |10.3.0.1/32*       |TRAP | CoppSystemIpUcast  |0    | - | Receive | - |32766| -
|0  |10.3.255.1/32*     |ROUTE| Et18               |2700 |2 | 00:1f:5d:6b:00:01 | 
- |1038 | -

Route Maps

A route map is an ordered set of rules that control the redistribution of IP routes into a protocol domain on the basis of such criteria as route metrics, access control lists, next hop addresses, and route tags. Route maps can also alter parameters of routes as they are redistributed.

Route Map Description

Route maps are composed of route map statements, each of which consists of a list of match and set commands.

Route Map Statements

Route map statements are categorized by the resolution of routes that the statement filters.
  • Permit statements facilitate the redistribution of matched routes.
  • Deny statements prevent the redistribution of matched routes.
Route map statement elements include name, sequence number, filter type, match commands, set commands, and continue commands.
  • name identifies the route map to which the statement belongs.
  • sequence number designates the statement’s placement within the route map.
  • filter type specifies the route resolution. Valid types are permit and deny.
  • match commands specify criteria that select routes that the statement is evaluating for redistribution.
  • set commands modify route parameters for redistributed routes.
  • continue commands prolong the route map evaluation of routes that match a statement.
Statements filter routes for redistribution. Routes that statements pass are redistributed (permit statements) or rejected (deny statements). Routes that statements fail are filtered by the next statement in the route map.
  • When a statement does not contain a match command, the statement passes all routes.
  • When a statement contains a single match command that lists a single object, the statement passes routes whose parameters match the object.
  • When a statement contains a single match command that lists multiple objects, the statements passes routes whose parameters match at least one object.
  • When a statement contains multiple match commands, the statement passes routes whose parameters match all match commands.

Set commands modify parameters for redistributed routes. Set commands are valid in permit statements.

Example

The following route map statement is named MAP_1 with sequence number 10. The statement matches all routes from BGP Autonomous System 10 and redistributes them with a local preference set to 100. Routes that do not match the statement are evaluated against the next statement in the route map.
switch# route-map MAP_1 permit 10
   match as 10
   set local-preference 100

Route Maps with Multiple Statements

A route map consists of statements with the same name and different sequence numbers. Statements filter routes in ascending order of their sequence numbers. When a statements passes a route, the redistribution action is performed as specified by the filter type and all subsequent statements are ignored. When the statement fails the route, the statement with the smallest sequence number that is larger than the current one filters the route.

All route maps have an implied final statement that contains a single deny statement with no match command. This denies redistribution to routes that are not passed by any statement.

Example

The following route map is named MAP_1 with two permit statements. Routes that do not match either statement are denied redistribution into the target protocol domain. 
switch# route-map MAP_1 permit 10
   match as 10
   set local-preference 100 
!
switch# route-map MAP_1 permit 20
   match metric-type type-1
   match as 100

Route Map Configuration describes route map configuration procedures.

Route Maps with Multiple Statements and Continue Commands

Route map statements that contain a continue (route map) command support additional route map evaluation of routes whose parameters meet the statement’s match commands. Routes that match a statement containing a continue command are evaluated against the statement specified by the continue command.

When a route matches multiple route map statements, the filter action (deny or permit) is determined by the last statement that the route matches. The set commands in all statements matching the route are applied to the route after the route map evaluation is complete. Multiple set commands are applied in the same order by which the route was evaluated against the statements containing them.

Example

The following route map is named MAP_1 with a permit statement and a deny statement. The permit statement contains a continue command. Routes that match statement 10 are evaluated against statement 20.
route-map MAP_2 permit 10
   match as 10
   continue 20
   set local-preference 100 
!
route-map MAP_2 deny 20
   match metric-type type-1
   match as 100

The route is redistributed if it passes statement 10 and is rejected by statement 20. The route is denied redistribution in all other instances. The continue command guarantees the evaluation of all routes against both statements.

Route Map Configuration

Route maps are created and modified in route map configuration mode. These sections describe the configuration mode and its commands.

Route Map Creation and Editing

Creating a Route Map Statement

To create a route map, enter route-map followed by the map name and filter type (deny or permit). The default sequence number is assigned to the statement if the command does not include a number.

Example
This command places the switch in route map configuration mode to create a route map statement named map1 with a sequence number of 50.
switch(config)# route-map map1 permit 50
switch(config-route-map-map1)#
Editing a Route Map Statement

To edit an existing route map statement, enter route-map with the map’s name and statement’s number. The switch enters route map configuration mode for the statement. Subsequent match (route-map) and set (route-map) commands add the corresponding commands to the statement.

The show command displays contents of the existing route map.

Example
This command places the switch in route map configuration mode to edit an existing route map statement. The show command displays contents of all statements in the route map.
switch(config)# route-map MAP2
switch(config-route-map-MAP2)#show
  Match clauses:
    match as 10
    match tag 333
  Set clauses:
    set local-preference 100
switch(config-route-map-MAP2)#
Saving Route Map Modifications

Route map configuration mode is a group-change mode. Changes are saved by exiting the mode, either with an explicit exit command or by switching directly to another configuration mode. This includes switching to the configuration mode for a different route map.

Example

The first command creates the map1 statement with sequence number of 10. The second command is not yet saved to the route map, as displayed by the show command.

switch(config)# route-map map1 permit
switch(config-route-map-map1)# match as 100
switch(config-route-map-map1)# show

switch(config-route-map-map1)#

The exit command saves the match command.

switch(config-route-map-map1)# exit
switch(config)# show route-map map1
route-map map1 permit 10
  Match clauses:
    match as 100
  Set clauses:
switch(config)#
Discarding Route Map Modifications

The abort command discards all pending changes and exits route map configuration mode.

Example
The abort command discards the pending match command and restores the original route map.
switch(config)# route-map map1 permit
switch(config-route-map-map1)# match as 100
switch(config-route-map-map1)# abort
switch(config)# show route-map map1
switch(config)#

Modifying Route Map Components

These commands add rules to the configuration mode route map:

Inserting a Statement

To insert a new statement into an existing route map, create a new statement with a sequence number that differs from any existing statement in the map.

Example
This command adds statement 50 to the Map1 route map, then displays the new route map.
switch(config)# route-map Map1 permit 50
switch(config-route-map-Map1)# match as 150
switch(config-route-map-Map1)#exit
switch(config)#show route-map Map1
route-map Map1 deny 10
  Match clauses:
    match as 10
    match tag 333
  Set clauses:
    set local-preference 100
route-map Map1 permit 50
  Match clauses:
    match as 150
  Set clauses:
switch(config)#
Deleting Route Map Components
To remove a component from a route map, perform one of the following:
  • To remove a command from a statement, enter no, followed by the command to be removed.
  • To remove a statement, enter no, followed by the route map with the filter type and the sequence number of the statement to be removed.
  • To remove a route map, enter no followed by the route map without a sequence number.

Using Route Maps

Protocol redistribution commands include a route map parameter that determines the routes to be redistributed into the specified protocol domain.

Example

This command uses Map1 route map to select OSPFv2 routes for redistribution into BGP AS1.
switch(config)# router bgp 1
switch(config-router-bgp)# redistribute ospf route-map Map1
switch(config-router-bgp)# exit
switch(config)#

Prefix Lists

A prefix list is an ordered set of rules that defines route redistribution access for a specified IP address space. A prefix list rules consists of a filter action (deny or permit), an address space identifier (IPv4 subnet address or IPv6 prefix), and a sequence number.

Prefix lists are referenced by route map match commands when filtering routes for redistribution.

Prefix List Configuration

A prefix list is an ordered set of rules that defines route redistribution access for a specified IP address space. A prefix list rule consists of a filter action (deny or permit), a network address (IPv4 subnet or IPv6 prefix), and a sequence number. A rule may also include a alternate mask size.

The switch supports IPv4 and IPv6 prefix lists. The switch is placed in a Prefix-list configuration mode to create and edit IPv4 or IPv6 prefix lists.

IPv4 Prefix Lists

IPv4 prefix lists are created or modified by adding an IPv4 prefix list rule in the Prefix-list configuration mode. Each rule includes the name of a prefix list, in addition to the sequence number, network address, and filter action. A list consists of all rules that have the same prefix list name.

The ip prefix-list command creates a prefix list or adds a rule to an existing list. Route map match commands use prefix lists to filter routes for redistribution into OSPF, RIP, or BGP domains.

Creating an IPv4 Prefix List

To create an IPv4 prefix list, enter the ip prefix-list command, followed by the name of the list. The switch enters IPv4 prefix-list configuration mode for the list. If the command is followed by the name of an existing ACL, subsequent commands edit that list.

Examples
  • This command places the switch in IPv4 prefix list configuration mode to create an IPv4 prefix list named route-one.
    switch(config)# ip prefix-list route-one
switch(config-ip-pfx)#
  • These commands create four different rules for the prefix-list named route-one.
    switch(config)# ip prefix-list route-one
switch(config-ip-pfx)# seq 10 deny 10.1.1.0/24
switch(config-ip-pfx)# seq 20 deny 10.1.0.0/16
switch(config-ip-pfx)# seq 30 permit 12.15.4.9/32
switch(config-ip-pfx)# seq 40 deny 1.1.1.0/24

To view the list, save the rules by exiting the Prefix-list command mode, then re-enter the configuration mode and type show active.

switch(config-ip-pfx)# exit
switch(config)# ip prefix-list route-one
switch(config-ip-pfx)# show active
ip prefix-list route-one
   seq 10 deny 10.1.1.0/24
   seq 20 deny 10.1.0.0/16
   seq 30 permit 12.15.4.9/32
   seq 40 deny 1.1.1.0/24
switch(config-ip-pfx)# ip prefix-list route-one

IPv4 prefix lists are referenced in match (route-map) command.

IPv6 Prefix Lists

Creating an IPv6 Prefix List

The switch provides IPv6 prefix-list configuration mode for creating and modifying IPv6 prefix lists. A list can be edited only in the mode where it was created.

To create an IP ACL, enter the ipv6 prefix-list command, followed by the name of the list. The switch enters IPv6 prefix-list configuration mode for the list. If the command is followed by the name of an existing ACL, subsequent commands edit that list.

Example
This command places the switch in IPv6 prefix list configuration mode to create an IPv6 prefix list named map1.
switch(config)# ipv6 prefix-list map1
switch(config-ipv6-pfx)#
Adding a Rule

To append a rule to the end of a list, enter the rule without a sequence number while in Prefix-List configuration mode for the list. The new rule’s sequence number is derived by adding 10 to the last rule’s sequence number.

Example
These commands enter the first two rules into a new prefix list.
switch(config-ipv6-pfx)# permit 3:4e96:8ca1:33cf::/64
switch(config-ipv6-pfx)# permit 3:11b1:8fe4:1aac::/64

To view the list, save the rules by exiting the prefix-list command mode, then re-enter the configuration mode and type show active.

switch(config-ipv6-pfx)# exit
switch(config)# ipv6 prefix-list map1
switch(config-ipv6-pfx)# show active
ipv6 prefix-list map1
   seq 10 permit 3:4e96:8ca1:33cf::/64
   seq 20 permit 3:11b1:8fe4:1aac::/64
switch(config-ipv6-pfx)#

This command appends a rule to the end of the prefix list. The new rule’s sequence number is 30.

switch(config-ipv6-pfx)# permit 3:1bca:1141:ab34::/64
switch(config-ipv6-pfx)# exit
switch(config)# ipv6 prefix-list map1
switch(config-ipv6-pfx)# show active
ipv6 prefix-list map1
   seq 10 permit 3:4e96:8ca1:33cf::/64
   seq 20 permit 3:11b1:8fe4:1aac::/64
   seq 30 permit 3:1bca:1141:ab34::/64
switch(config-ipv6-pfx)#
Inserting a Rule

To insert a rule into a prefix list, use the seq (IPv6 Prefix Lists) command to enter a rule with a sequence number that is between numbers of two existing rules.

Example
This command inserts a rule between the first two rules by assigning it the sequence number 15.
switch(config-ipv6-pfx)# seq 15 deny 3:4400::/64
switch(config-ipv6-pfx)# exit
switch(config)# show ipv6 prefix-list map1
ipv6 prefix-list map1
seq 10 permit 3:4e96:8ca1:33cf::/64
seq 15 deny 3:4400::/64
seq 20 permit 3:11b1:8fe4:1aac::/64
seq 30 permit 3:1bca:3ff2:634a::/64
switch(config)#
Deleting a Rule

To remove a rule from the configuration mode prefix list, enter no seq (see seq (IPv6 Prefix Lists)), followed by the sequence number of the rule to be removed.

Example
These commands remove rule 20 from the prefix list, then displays the resultant prefix list.
switch(config-ipv6-pfx)# no seq 20
switch(config-ipv6-pfx)# exit 
switch(config)# show ipv6 prefix-list map1
ipv6 prefix-list map1
seq 10 permit 3:4e96:8ca1:33cf::/64
seq 15 deny 3:4400::/64
seq 30 permit 3:1bca:3ff2:634a::/64
switch(config)#

Using Prefix Lists

Route map match commands include an option that matches a specified prefix list.

Example

The MAP_1 route map uses a match command that references the PL_1 prefix list.
switch(config)# route-map MAP_1 permit
switch(config-route-map-MAP_1)# match ip address prefix-list PL_1
switch(config-route-map-MAP_1)# set community 500
switch(config-route-map-MAP_1)# exit

Static Routes Redistribution into IGPs

Use match ip next-hop route-map, while redistributing static routes into IGPs to redistribute the static routes whose configured next-hops satisfies the route-map policy.

The following example applies match ip next-hop clause for static routes redistributed into IGPs for multi-agent mode as well. The following configures a static route.

switch(config)# ip route 10.20.30.0/24 1.2.3.4

The following configures a prefix-list.

switch (config)# ip prefix-list prefixListName
switch(config-ip-pfx)# permit 1.2.3.4/32

1.2.3.4 is a configured next-hop for static route 10.20.30.0/24.

The following configures a route map.

switch(config)# route-map routeMapName
switch(config-route-map-routeMapName)# match ip next-hop prefix-list prefixListName

To redistribute static routes with ‘match ip next-hop’ route-map clause in IS-IS.

switch(config-router-isis)# redistribute static route-map routeMapName

Redistributed routes can be seen using the following show commands. If routes are redistributed into IS-IS then show isis database detailIf routes are redistributed into OSPFv2 then show ip ospf database detail.

switch# show ip route

VRF: default
Codes: C - connected, S - static, K - kernel,
       O - OSPF, IA - OSPF inter area, E1 - OSPF external type 1,
       E2 - OSPF external type 2, N1 - OSPF NSSA external type 1,
       N2 - OSPF NSSA external type2, B - BGP, B I - iBGP, B E - eBGP,
       R - RIP, I L1 - IS-IS level 1, I L2 - IS-IS level 2,
       O3 - OSPFv3, A B - BGP Aggregate, A O - OSPF Summary,
       NG - Nexthop Group Static Route, V - VXLAN Control Service,
       DH - DHCP client installed default route, M - Martian,
       DP - Dynamic Policy Route, L - VRF Leaked

Gateway of last resort is not set

 ...
 I L2     10.20.30.0/24 [115/10] via 1.2.3.4, Ethernet1


switch# show isis database detail

IS-IS Instance: B VRF: default
  IS-IS Level 1 Link State Database
    LSPID                 Seq Num   Cksum  Life  IS Flags
    ...
  IS-IS Level 2 Link State Database
    LSPID                 Seq Num   Cksum  Life  IS Flags
    0000.0000.0001.00-00  6         10364  840   L2 <>
      ...
      Reachability         : 10.20.30.0/24 Metric: 0 Type: 1 Up
      ...

Port ACLs with User-Defined Fields

Describes the support for specifying User-Defined Fields (UDF) in Port ACLs including IPv4, IPv6, and MAC ACLs. The purpose of the User-Defined Fields feature is to permit or deny packets based on custom offset pattern matching.

User-Defined Fields, or UDFs, are defined as part of an access-list filter and are comprised of an offset, length, pattern match and mask. This describes a single portion of any incoming packet to match the provided value upon.

UDFs may also be defined via aliases. Aliases are a way to save a UDF configuration for reuse in multiple access-lists and or access-list rules. An alias may substitute for a fully defined UDF including the offset, pattern and mask. The pattern or mask may be overridden when the alias is used in an access-list rule.

The behavior, CLI syntax and configuration of UDFs are identical to Traffic Steering UDF and Mirroring ACL UDF.

This section describes port ACLs with user-defined fields, including configuration instructions. Topics covered by this section include:

configuring Port ACLs with User-Defined Fields

User-Defined Fields are specified as part of an access-list. The type of access-list however, dictates the base position of the UDF and the options available. In addition, a TCAM profile must be configured to include UDFs as part of the Port ACL feature’s key.

TCAM Profile

User-Defined Fields are defined as additional fields in the Port ACL feature’s key. By default, UDFs are not included in the keys for the Port ACL features. Adding a UDF to the key requires removal of different key fields to fit within the TCAM width restrictions.

Note: Each UDF is either 16 bits wide or 32 bits wide.

Below are example configurations of the TCAM profile.

IPv4 Port ACL

The following configurations create a new profile based on the default profile. This new profile replaces the Layer 4 port key fields with one 16-bit UDF and one 32-bit UDF.

switch(config)# hardware tcam
switch(config-hw-tcam)# profile ipv4Udf copy default
switch(config-hw-tcam-profile-ipv4Udf)# feature acl port ip
switch(config-hw-tcam-profile-ipv4Udf-feature-acl-port-ip)# no key field l4-ops
switch(config-hw-tcam-profile-ipv4Udf-feature-acl-port-ip)# no key field l4-src-port
switch(config-hw-tcam-profile-ipv4Udf-feature-acl-port-ip)# no key field l4-dst-port
switch(config-hw-tcam-profile-ipv4Udf-feature-acl-port-ip)# key field udf-16b-1
switch(config-hw-tcam-profile-ipv4Udf-feature-acl-port-ip)# key field udf-32b-1
switch(config-hw-tcam-profile-ipv4Udf-feature-acl-port-ip)# exit
switch(config-hw-tcam-profile-ipv4Udf)# exit
switch(config-hw-tcam)# system profile ipv4Udf
Example-16-bit IPv4 Header Match

The following configurations match IPv4 packets based on the Identification(ID) field. Packets ingressing into interface ethernet 7 with an ID equal to 1000 is forwarded. Packets with an ID different than 1000 is dropped.

(config)# ip access-list udfAcl
(config-acl-udfAcl)# permit ip any any payload header start offset 1 pattern 0x03E80000 mask 0x0000FFFF
(config-acl-udfAcl)# deny ip any any
(config-acl-udfAcl)# exit
(config)# interface ethernet 7
(config-if-Et7)#
IPv6 Port ACL

The following configurations create a new profile based on the default profile. This new profile replaces the destination IPv6 address key field with two 32-bit UDFs.

switch(config)# hardware tcam
switch(config-hw-tcam)# profile ipv6Udf copy default
switch(config-hw-tcam-profile-ipv6Udf)# feature acl port ipv6
switch(config-hw-tcam-profile-ipv6Udf-feature-acl-port-ipv6)# no key field dst-ipv6
switch(config-hw-tcam-profile-ipv6Udf-feature-acl-port-ipv6)# key field udf-32b-1
switch(config-hw-tcam-profile-ipv6Udf-feature-acl-port-ipv6)# key field udf-32b-2
switch(config-hw-tcam-profile-ipv6Udf-feature-acl-port-ipv6)# exit
switch(config-hw-tcam-profile-ipv6Udf)# exit
switch(config-hw-tcam)# system profile ipv6Udf
Example-32-bit IPv6 Payload Match

The following configurations match IPv6 UDP packets based on the first 32 bits of the packet payload. UDP packets ingressing into interface ethernet 7 that starts with 0x1234567X (where X can be any valid hexadecimal) in the payload are forwarded. Any other packets are dropped. The offset is set to 2 (2 x 4-byte words) to skip the UDP header.

(config)# ipv6 access-list udfAcl
(config-ipv6-acl-udfAcl)# permit udp any any payload offset 2 pattern 0x12345670 mask 0x0000000f
(config-ipv6-acl-udfAcl)# deny ipv6 any any
(config-ipv6-acl-udfAcl)# exit
(config)# interface ethernet 7
(config-if-Et7)# ipv6 access-group udfAcl in

Port ACLs with User-Defined Fields Limitations

User-defined fields consume a limited set of copy resources. For each unique offset, if a pattern is specified that is masked to be > 16 bits wide, then a 32-bit resource is used. If no 32-bit resource is available, then two 16-bit resources areused, if available. Copy resources are dependent upon the number of UDF key fields added to the feature key. Each UDF key field maps to one copy resource. Using the above TCAM profile configurations:
  • IPv4: 1 x 16-bit pattern + 1 x 32-bit pattern.
  • IPv6: 2 x 32-bit pattern.
  • MAC: 1 x 16-bit pattern + 1 x 32-bit pattern.
Other limitations include:
  • Maximum offset value is 31, which is 31 4-byte words, or 124 bytes.
  • UDFs only work on ingress Port ACLs.

ACL, Route Map, and Prefix List Commands

This section describes CLI commands that this chapter references.

ACL Creation and Access Commands

ACL Implementation Commands

Service ACL Implementation Commands

ACL Edit Commands

ACL Rule Commands

ACL List Counter Commands

ACL Display Commands

Prefix List Creation and Access Commands

Prefix List Edit Commands

Prefix List Display Commands

Route Map Creation and Access Command

Route Map Edit Commands

Route Map Display Commands

clear ip access-lists counters

The clear ip access-lists counters command sets ACL counters to zero for the specified IPv4 Access Control List (ACL). The session parameter limits ACL counter clearing to the current CLI session.

Command Mode

Privileged EXEC

Command Syntax

clear ip access-lists counters [ACL_NAME][SCOPE]

Parameters
  • ACL_NAME Name of ACL. Options include:
    • no parameter all ACLs.
    • access_list name of ACL.
  • SCOPE Session affected by command. Options include:
    • no parameter command affects counters on all CLI sessions.
    • session affects only current CLI session.

Example

This command resets all IPv4 ACL counters.
switch(config)# clear ip access-lists counters
switch(config)#

clear ipv6 access-lists counters

The clear ipv6 access-lists counters command sets ACL counters to zero for the specified IPv6 Access Control List (ACL). The session parameter limits ACL counter clearing to the current CLI session.

Command Mode

Privileged EXEC

Command Syntax

clear ipv6 access-lists counters [ACL_NAME][SCOPE]

Parameters
  • ACL_NAME name of ACL. Options include:
    • no parameter all IPv6 ACLs.
    • access_list name of IPv6 ACL.
  • SCOPE Session affected by command. Options include:
    • no parameter command affects counters on all CLI sessions.
    • session affects only current CLI session.

Example

This command resets all IPv6 ACL counters.
switch(config)# clear ipv6 access-lists counters
switch(config)#

continue (route map)

The continue command creates a route map statement entry that enables additional route map evaluation of routes whose parameters meet the statement's matching criteria.

A statement typically contains a match (route-map) and a set (route-map) command. The evaluation of routes whose settings are the same as match command parameters normally ends and the statement's set commands are applied to the route. Routes that match a statement containing a continue command are evaluated against the statement specified by the continue command.

When a route matches multiple route map commands, the filter action (deny or permit) is determined by the last statement that the route matches. The set commands in all statements matching the route are applied to the route after the route map evaluation is complete. Multiple set commands are applied in the same order by which the route was evaluated against the statement containing them.

The no continue and default continue commands remove the corresponding continue command from the configuration mode route map statement by deleting the corresponding command from running-config.

Command Mode

Route-Map Configuration

Command Syntax

continue NEXT_SEQ

no continue NEXT_SEQ

default continue NEXT_SEQ

Parameters

NEXT_SEQ Specifies next statement for evaluating matching routes. Options include:
  • no parameter Next statement in the route map, as determined by sequence number.
  • seq_number Specifies the number of the next statement. Values range from 1 to 16777215.

Restrictions

A continue command cannot specify a sequence number smaller than the sequence number of its route map statement.

Related Command

route-map command enters route map configuration mode.

Example

This command creates route map map1, statement 40 with a match command, a set command, and a continue command. Routes that match the statement are subsequently evaluated against statement 100. The set local-preference command is applied to matching routes regardless of subsequent matching operations.
switch(config)# route-map map1 deny 40
switch(config-route-map-map1)# match as 15
switch(config-route-map-map1)# continue 100
switch(config-route-map-map1)# set local-preference 50
switch(config-route-map-map1)#

counters per-entry (ACL configuration modes)

The counters per-entry command places the ACL in counting mode. In counting mode, the feature generally displays the number of instances each rule in the list matches an inbound packet and the elapsed time since the last match. However, for certain select platforms, in addition to the packet counter, ACL counters can also be enabled for byte counts when applied to data plane ACLs. A complete list of platforms that support byte count for data plan ACLs are listed below:
Note: Byte counting is supported only for data plane ACLs.

Only the below platforms support ACL byte counting

  • CCS-710/720/722/755/758 series
  • DCS-7010TX
  • DCS-7050SX3/CX3/TX3/CX4/DX4/PX4
  • DCS-7060 Series
  • DCS-7300X3/7304X3/7308X3/7316/7320X/7324/7328/7358X4/7368/7388

On the FM6000 platform, this command has no effect when used in an ACL that is part of a PBR class map.

The no counters per-entry and default counters per-entry commands place the ACL in non-counting mode.

Command Mode

ACL Configuration

IPv6-ACL Configuration

Std-ACL Configuration

Std-IPv6-ACL Configuration

MAC-ACL Configuration

Command Syntax

counters per-entry

no counters per-entry

default counters per-entry

Examples
  • This command places the test1 ACL in counting mode.
    switch(config)# ip access-list test1
switch(config-acl-test1)# counters per-entry
switch(config-acl-test1)#
  • This command displays the ACL, with counter information, for an ACL in counting mode.
    switch# show ip access-lists
IP Access List default-control-plane-acl [readonly]
  counters per-entry
  10 permit icmp any any
  20 permit ip any any tracked [match 12041 packets, 0:00:00 ago]
  30 permit ospf any any
  40 permit tcp any any eq ssh telnet www snmp bgp https [match 11 packets, 1:41:07 ago]
  50 permit udp any any eq bootps bootpc snmp rip [match 78 packets, 0:00:27 ago]
  60 permit tcp any any eq mlag ttl eq 255
  70 permit udp any any eq mlag ttl eq 255
  80 permit vrrp any any
  90 permit ahp any any
  100 permit pim any any
  110 permit igmp any any [match 14 packets, 0:23:27 ago]
  120 permit tcp any any range 5900 5910
  130 permit tcp any any range 50000 50100
  140 permit udp any any range 51000 51100
  • On the platforms that support byte counting, counter information is displayed as shown below:
    switch#show ip access-lists
IP Access List default-control-plane-acl [readonly]
        counters per-entry
        10 permit icmp any any [match 30 packets, 0:02:08 ago]
        20 permit ip any any tracked [match 97777 packets, 0:00:00 ago]
        30 permit udp any any eq bfd ttl eq 255
        40 permit udp any any eq bfd-echo ttl eq 254
        50 permit udp any any eq multihop-bfd micro-bfd sbfd
        60 permit udp any eq sbfd any eq sbfd-initiator
        70 permit ospf any any
        80 permit tcp any any eq ssh telnet www snmp bgp https msdp ldp netconf-ssh gnmi [match 72 packets, 0:00:00 ago]
        90 permit udp any any eq bootps bootpc snmp rip ntp ldp ptp-event ptp-general
        100 permit tcp any any eq mlag ttl eq 255
        110 permit udp any any eq mlag ttl eq 255
        120 permit vrrp any any
        130 permit ahp any any
        140 permit pim any any


IP Access List ipCountersTest:The ipCountersTest ACL is applied to the data plane. Hence, it displays the byte count information as shown below:
        counters per-entry
        10 permit tcp host 10.1.1.1 range 2000 4000 host 10.2.1.1 [match 486 bytes in 3 packets, 0:00:26 ago]
        20 permit tcp host 10.1.1.1 range 14000 16000 host 10.2.1.1 [match 486 bytes in 3 packets, 0:00:18 ago]
        30 permit udp host 10.1.1.1 range 62000 64000 host 10.2.1.1 [match 450 bytes in 3 packets, 0:00:00 ago]
        40 permit tcp host 10.1.1.1 range 50000 52000 host 10.2.1.1 [match 486 bytes in 3 packets, 0:00:02 ago]
        50 permit tcp host 10.1.1.1 range 38000 40000 host 10.2.1.1 [match 486 bytes in 3 packets, 0:00:10 ago]
        60 permit tcp host 10.1.1.1 range 26000 28000 host 10.2.1.1 [match 486 bytes in 3 packets, 0:00:18 ago]

deny (IPv4 ACL)

The deny command adds a deny rule to the configuration mode IPv4 Access Control List (ACL). Packets filtered by a deny rule are dropped by interfaces to which the ACL is applied. Sequence numbers determine rule placement in the ACL. Sequence numbers for commands without numbers are derived by adding 10 to the number of the ACL's last rule.

The no deny and default deny commands remove the specified rule from the configuration mode ACL. The no <sequence number> (ACLs) command also removes the specified rule from the ACL.

Command Mode

ACL Configuration

Command Syntax

[SEQ_NUM] deny PROTOCOL SOURCE_ADDR [SOURCE_PORT] DEST_ADDR [DEST_PORT][FLAGS][MESSAGE][fragments][tracked][DSCP_FILTER][TTL_FILTER][log]

no deny PROTOCOL SOURCE_ADDR [SOURCE_PORT] DEST_ADDR [DEST_PORT][FLAGS][MESSAGE][fragments][tracked][DSCP_FILTER][TTL_FILTER][log]

default deny PROTOCOL SOURCE_ADDR [SOURCE_PORT] DEST_ADDR [DEST_PORT][FLAGS][MESSAGE][fragments][tracked][DSCP_FILTER][TTL_FILTER][log]

Note: Commands use a subset of the listed fields. Available parameters depend on specified protocol. Use CLI syntax assistance to view options for specific protocols when creating a deny rule.
Parameters
  • SEQ_NUM Sequence number assigned to the rule. Options include:
    • no parameter Number is derived by adding 10 to the number of the ACL's last rule.
    • 14294967295 Number assigned to entry.
  • PROTOCOL protocol field filter. Values include:
    • ahp Authentication Header Protocol (51).
    • icmp Internet Control Message Protocol (1).
    • igmp Internet Group Management Protocol (2).
    • ip Internet Protocol v4 (4).
    • ospf Open Shortest Path First (89).
    • pim Protocol Independent Multicast (103).
    • tcp Transmission Control Protocol (6).
    • udp User datagram protocol (17).
    • vrrp Virtual Router Redundancy Protocol (112).
    • protocol_num Integer corresponding to an IP protocol. Values range from 0 to 255.
  • SOURCE_ADDR and DEST_ADDR Source and destination address filters. Options include:
    • network_addr Subnet address (CIDR or address-mask).
    • any Packets from all addresses are filtered.
    • host ip_addr IP address (dotted decimal notation).

      Subnet addresses support discontiguous masks.

  • SOURCE_PORT and DEST_PORT Source and destination port filters. Options include:
    • any All ports.
    • eq port-1 port-2 ... port-n A list of ports. Maximum list size is 10 ports.
    • neq port-1 port-2 ... port-n The set of all ports not listed. Maximum list size is 10 ports.
    • gt port The set of ports with larger numbers than the listed port.
    • lt port The set of ports with smaller numbers than the listed port.
    • range port_1 port_2 The set of ports whose numbers are between the range.
  • fragments Filters packets with FO bit set (indicates a non-initial fragment packet).
  • FLAGS Flag bit filters (TCP packets). Use CLI syntax assistance (?) to display options.
  • MESSAGE Message type filters (ICMP packets). Use CLI syntax assistance (?) to display options.
  • tracked Rule filters packets in existing ICMP, UDP, or TCP connections.
    • Valid in ACLs applied to the control plane.
    • Validity in ACLs applied to data plane varies by switch platform.
  • DSCP_FILTER Rule filters packet by its DSCP value. Values include:
    • no parameter Rule does not use DSCP to filter packets.
    • dscp dscp_value Packets match if DSCP field in packet is equal to dscp_value.
  • TTL_FILTER Rule filters packet by its TTL (time-to-live) value. Values include:
    • ttl eq ttl_value Packets match if ttl in packet is equal to ttl_value.
    • ttl gt ttl_value Packets match if ttl in packet is greater than ttl_value.
    • ttl lt ttl_value Packets match if ttl in packet is less than ttl_value.
    • ttl neq ttl_value Packets match if ttl in packet is not equal to ttl_value.
      • Valid in ACLs applied to the control plane.
      • Validity in ACLs applied to data plane varies by switch platform.
  • log Triggers an informational log message to the console about the matching packet.
    • Valid in ACLs applied to the control plane.
    • Validity in ACLs applied to data plane varies by switch platform.
Examples
  • This command appends a deny statement at the end of the ACL. The deny statement drops OSPF packets from 10.10.1.1/24 to any host.
    switch(config)# ip access-list text1
switch(config-acl-text1)# deny ospf 10.1.1.0/24 any
switch(config-acl-text1)#
  • This command inserts a deny statement with the sequence number 65. The deny statement drops all PIM packets.
    switch(config-acl-text1)# 65 deny pim any any
switch(config-acl-text1)#

deny (IPv6 ACL)

The deny command adds a deny rule to the configuration mode IPv6 Access Control List (ACL). Packets filtered by a deny rule are dropped by interfaces to which the ACL is applied. Sequence numbers determine rule placement in the ACL. Sequence numbers for commands without numbers are derived by adding 10 to the number of the ACL's last rule.

The no deny and default deny commands remove the specified rule from the configuration mode ACL. The no <sequence number> (ACLs) command also removes the specified rule from the ACL.

Command Mode

IPv6-ACL Configuration

Command Syntax

[SEQ_NUM] deny PROT SRC_ADDR [SRC_PT] DEST_ADDR [DEST_PT][FLAG] [MSG][hop][tracked][DSCP_FILTER] [log]

no deny PROT SRC_ADDR [SOURCE_PT] DEST_ADDR [DEST_PT][FLAG][MSG][hop][tracked][DSCP_FILTER][log]

default deny PROT SRC_ADDR [SOURCE_PT] DEST_ADDR [DEST_PT][FLAG][MSG] [hop][tracked][DSCP_FILTER][log]

Note: Commands use a subset of the listed fields. Available parameters depend on specified protocol. Use CLI syntax assistance to view options for specific protocols when creating a deny rule.
Parameters
  • SEQ_NUM Sequence number assigned to the rule. Options include:
    • no parameter Number is derived by adding 10 to the number of the ACL's last rule.
    • 1 - 4294967295 Number assigned to entry.
  • PROT Protocol field filter. Values include:
    • icmpv6 Internet Control Message Protocol for version 6 (58).
    • ipv6 Internet Protocol IPv6 (41).
    • ospf Open Shortest Path First (89).
    • tcp Transmission Control Protocol (6).
    • udp User Datagram Protocol (17).
    • protocol_num Integer corresponding to an IP protocol. Values range from 0 to 255.
  • SRC_ADDR and DEST_ADDR Source and destination address filters. Options include:
    • ipv6_prefix IPv6 address with prefix length (CIDR notation).
    • any Packets from all addresses are filtered.
    • host ipv6_addr IPv6 host address.
  • SRC_PT and DEST_PT Source and destination port filters. Options include:
    • any All ports.
    • eq port-1 port-2 ... port-n A list of ports. Maximum list size is 10 ports.
    • neq port-1 port-2 ... port-n The set of all ports not listed. Maximum list size is 10 ports.
    • gt port The set of ports with larger numbers than the listed port.
    • lt port The set of ports with smaller numbers than the listed port.
    • range port_1 port_2 The set of ports whose numbers are between the range.
  • HOP Filters by packet's hop-limit value. Options include:
    • no parameter Rule does not use hop limit to filter packets.
    • hop-limit eq hop_value Packets match if hop-limit value in packet equals hop_value.
    • hop-limit gt hop_value Packets match if hop-limit in packet is greater than hop_value.
    • hop-limit lt hop_value Packets match if hop-limit in packet is less than hop_value.
    • hop-limit neq hop_value Packets match if hop-limit in packet is not equal to hop_value.
  • FLAG Flag bit filters (TCP packets). Use CLI syntax assistance (?) to display options.
  • MSG Message type filters (ICMPv6 packets). Use CLI syntax assistance (?) to display options.
  • tracked Rule filters packets in existing ICMP, UDP, or TCP connections.
    • Valid in ACLs applied to the control plane.
    • Validity in ACLs applied to data plane varies by switch platform.
  • DSCP_FILTER Rule filters packet by its DSCP value. Values include:
    • no parameter Rule does not use DSCP to filter packets.
    • dscp dscp_value Packets match if DSCP field in packet is equal to dscp_value.
  • log Triggers an informational log message to the console about the matching packet.
    • Valid in ACLs applied to the control plane.
    • Validity in ACLs applied to data plane varies by switch platform.

Example

This command appends a deny statement at the end of the ACL. The deny statement drops IPv6 packets from 3710:249a:c643:ef11::/64 to any host.
switch(config)# ipv6 access-list text1
switch(config-acl-text1)# deny ipv6 3710:249a:c643:ef11::/64 any
switch(config-acl-text1)#

deny (IPv6 Prefix List)

The deny command adds a rule to the configuration mode IPv6 prefix list. Route map match commands use prefix lists to filter routes for redistribution into OSPF, RIP, or BGP domains. Routes are denied access when they match the prefix that a deny statement specifies.

The no deny and default deny commands remove the specified rule from the configuration mode prefix list. The no seq (IPv6 Prefix Lists) command also removes the specified rule from the prefix list.

Command Mode

IPv6-pfx Configuration

Command Syntax

[SEQUENCE] deny ipv6_prefix [MASK]

Parameters
  • SEQUENCE Sequence number assigned to the rule. Options include:
    • no parameter Number is derived by adding 10 to the number of the list's last rule.
    • seq seq_num Number is specified by seq_num. Value ranges from 0 to 65535.
  • ipv6_prefix IPv6 prefix upon which command filters routes (CIDR notation).
  • MASK Range of the prefix to be matched.
    • no parameter Exact match with the subnet mask is required.
    • eq mask_e Prefix length is equal to mask_e.
    • ge mask_g Range is from mask_g to 128.
    • le mask_l Range is from subnet mask length to mask_l.
    • ge mask_l le mask_g Range is from mask_g to mask_l.
    • mask_e, mask_land, and mask_g range from 1 to 128.
    • When le and ge are specified, subnet mask mask_g mask_l.

Example

This command appends a deny statement at the end of the text1 prefix list. The deny statement denies redistribution of routes with the specified prefix.
switch(config)# ipv6 prefix-list route-five
switch(config-ipv6-pfx)# deny 3100::/64
switch(config-ipv6-pfx)#

deny (MAC ACL)

The deny command adds a deny rule to the configuration mode MAC Access Control List (ACL). Packets filtered by a deny rule are dropped by interfaces to which the ACL is applied. Sequence numbers determine rule placement in the ACL. Sequence numbers for commands without numbers are derived by adding 10 to the number of the ACL's last rule.

The no deny and default deny commands remove the specified rule from the configuration mode ACL. The no <sequence number> (ACLs) command also removes the specified rule from the ACL.

Command Mode

MAC-ACL Configuration

Command Syntax

[SEQ_NUM] deny SOURCE_ADDR DEST_ADDR [PROTOCOL][log]

no deny SOURCE_ADDR DEST_ADDR [PROTOCOL][log]

default deny SOURCE_ADDR DEST_ADDR [PROTOCOL][log]

Parameters
  • SEQ_NUM Sequence number assigned to the rule. Options include:
    • no parameter Number is derived by adding 10 to the number of the ACL's last rule.
    • 1 - 4294967295 Number assigned to entry.
  • SOURCE_ADDR and DEST_ADDR Source and destination address filters. Options include:
    • mac_address mac_mask MAC address and mask.
    • any Packets from all addresses are filtered.
    • mac_address specifies a MAC address in 3x4 dotted hexadecimal notation (hhhh.hhhh.hhhh).
    • mac_mask specifies a MAC address mask in 3x4 dotted hexadecimal notation (hhhh.hhhh.hhhh).
    • 0 bits require an exact match to filter.
    • 1 bits filter on any value.
  • PROTOCOL Protocol field filter. Values include:
    • aarp Appletalk Address Resolution Protocol (0x80f3).
    • appletalk Appletalk (0x809b).
    • arp Address Resolution Protocol (0x806).
    • ip Internet Protocol Version 4 (0x800).
    • ipx Internet Packet Exchange (0x8137).
    • lldp LLDP (0x88cc).
    • novell Novell (0x8138).
    • rarp Reverse Address Resolution Protocol (0x8035).
    • protocol_num Integer corresponding to a MAC protocol. Values range from 0 to 65535.
  • log Triggers an informational log message to the console about the matching packet.
Examples
  • This command appends a permit statement at the end of the ACL. The deny statement drops all aarp packets from 10.1000.0000 through 10.1000.FFFF to any host.
    switch(config)# mac access-list text1
switch(config-mac-acl-text1)# deny 10.1000.0000 0.0.FFFF any aarp
  • This command inserts a permit statement with the sequence number 25. The deny statement drops all packets through the interface. 
    switch(config-mac-acl-text1)# 25 deny any any

deny (Standard IPv4 ACL)

The deny command adds a deny rule to the configuration mode standard IPv4 Access Control List (ACL). Standard ACL rules filter on the source field.

Packets filtered by a deny rule are dropped by interfaces to which the ACL is applied. Sequence numbers determine rule placement in the ACL. Sequence numbers for commands without numbers are derived by adding 10 to the number of the ACL's last rule.

The no deny and default deny commands remove the specified rule from the configuration mode ACL. The no <sequence number> (ACLs) command also removes the specified rule from the ACL.

Command Mode

Std-ACL Configuration

Command Syntax

[SEQ_NUM] deny SOURCE_ADDR [log]

no deny SOURCE_ADDR [log]

default deny SOURCE_ADDR [log]

Parameters
  • SEQ_NUM Sequence number assigned to the rule. Options include:
    • no parameter Number is derived by adding 10 to the number of the ACL's last rule.
    • 1 - 4294967295 Number assigned to entry.
  • SOURCE_ADDR Source address filter. Options include:
    • network_addr Subnet address (CIDR or address-mask).
    • any Packets from all addresses are filtered.
    • host ip_addr IP address (dotted decimal notation).

      Subnet addresses support discontiguous masks.

  • log Triggers an informational log message to the console about the matching packet.
    • Valid in ACLs applied to the control plane.
    • Validity in ACLs applied to data plane varies by switch platform.

Example

This command appends a deny statement at the end of the ACL. The deny statement drops packets from 10.10.1.1/24.
switch(config)# ip access-list standard text1
switch(config-std-acl-text1)# deny 10.1.1.1/24
switch(config-std-acl-text1)#

deny (Standard IPv6 ACL)

The deny command adds a deny rule to the configuration mode standard IPv6 Access Control List (ACL). Standard ACL rules filter on the source field.

Packets filtered by a deny rule are dropped by interfaces to which the ACL is applied. Sequence numbers determine rule placement in the ACL. Sequence numbers for commands without numbers are derived by adding 10 to the number of the ACL's last rule.

The no deny and default deny commands remove the specified rule from the configuration mode ACL. The no <sequence number> (ACLs) command also removes the specified rule from the ACL.

Command Mode

Std-IPv6-ACL Configuration

Command Syntax

[SEQ_NUM] deny SOURCE_ADDR

no deny SOURCE_ADDR

default deny SOURCE_ADDR

Parameters
  • SEQ_NUM Sequence number assigned to the rule. Options include:
    • no parameter Number is derived by adding 10 to the number of the ACL's last rule.
    • 1 - 4294967295 Number assigned to entry.
  • SOURCE_ADDR Source address filter. Options include:
    • ipv6_prefix IPv6 address with prefix length (CIDR notation).
    • any Packets from all addresses are filtered.
    • host ipv6_addr IPv6 host address.

Example

This command appends a deny statement at the end of the ACL. The deny statement drops packets from 2103::/64.
switch(config)# ipv6 access-list standard text1
switch(config-std-acl-ipv6-text1)# deny 2103::/64
switch(config-std-acl-ipv6-text1)#

description (route map)

The description command adds a text string to the configuration mode route map. The string has no functional impact on the route map.

The no description and default description commands remove the text string from the configuration mode route map by deleting the corresponding description command from running-config.

Command Mode

Route-Map Configuration

Command Syntax

description label_text

no description

default description

Parameters

label_text Character string assigned to the route map configuration.

Related Command

route-map

Example

These commands add description text to the XYZ-1 route map.
switch(config)# route-map XYZ-1
switch(config-route-map-XYZ-1)# description This is the first map.
switch(config-route-map-XYZ-1)# exit
switch(config)# show route-map XYZ-1
route-map XYZ-1 permit 10
  Description:
    description This is the first map.
  Match clauses:
  Set clauses:
switch(config)#

hardware access-list resource sharing vlan in

The hardware access-list resource sharing vlan in command enables the IPv4 Ingress Sharing of hardware resources on the switch same ACL is applied on different VLANs.

The no hardware access-list resource sharing vlan in command disables the IPv4 Ingress Sharing of hardware resources on the switch.

Command Mode

Global Configuration

Command Syntax

hardware access-list resource sharing vlan in

no hardware access-list resource sharing vlan in

Guidelines
  • This command is compatible only with the DCS-7010 and DCS-7050x series switches.
  • Enabling IPv4 Ingress Sharing requires the restart of software agents on the platform. This is a disruptive process and impacts traffic forwarding.

Use the show platform trident command to verify the Ingress IPv4 Sharing information.

hardware access-list resource sharing vlan ipv4 out

The hardware access-list resource sharing vlan ipv4 out command enables the IPv4 Egress RACL TCAM sharing on the switch.

The no hardware access-list resource sharing vlan ipv4 out command disables the IPv4 Egress RACL TCAM sharing on the switch. By default, the IPv4 Egress RACL sharing is enabled on the switch.

Command Mode

Global Configuration

Command Syntax

hardware access-list resource sharing vlan ipv4 out

no hardware access-list resource sharing vlan ipv4 out

Guidelines
  • This command is compatible only with the DCS-7280E and DCS-7500E series switches.
  • Disabling IPv4 RACL sharing requires the restart of software agents on the platform. This is a disruptive process and impacts traffic forwarding.
  • Enabling IPv4 RACL sharing, if previously disabled from the default configuration, requires the restart of software agents on the platform. This is a disruptive process and impacts traffic forwarding. Enabling IPv4 RACL sharing if uRPF is configured will disable uRPF.
  • Use the show running-config all | include sharing command to verify whether or not sharing for egress IPv4 RACLs is enabled.

Example

This command verifies whether IPv4 RACL sharing is enabled or disabled.
switch# show running-config all | include sharing

hardware access-list resource sharing vlan ipv4 out 
                        ---->It returns the following output if IPv4 RACL sharing is enabled.

hardware access-list update default-result permit

The hardware access-list update default-result permit command configures the switch to permit all traffic on Ethernet and VLAN interfaces with ACLs applied to them while those ACLs are being modified. Traffic is permitted when the ACL is available for modification using one of the ip access-list commands, and ends when the ACL configuration mode is exited and rules are populated in hardware. This command is disabled by default.

The no hardware access-list update default-result permit and default hardware access-list update default-result permit commands restore the switch to its default state (blocking traffic during ACL modifications) by removing the corresponding hardware access-list update default-result permit command from the running-config.

Command Mode

Global Configuration

Command Syntax

hardware access-list update default-result permit

no hardware access-list update default-result permit

default hardware access-list update default-result permit

Restrictions

This command is available on the Arista 7050X, 7060X, 7150, 7250X, 7280, 7280R, 7300X, 7320X, and 7500 series switches.

When enabled, static NAT, and ACL-based mirroring are affected during ACL updates.

Example

This command configures a 7150 series switch to permit all traffic on Ethernet and VLAN interfaces with ACLs applied to them while those ACLs are being modified.
switch(config)# hardware access-list update default-result permit
switch(config)#

hardware counter feature acl out

The hardware counter feature acl out command enables egress ACL hardware counters for IPv4 or IPv6, which count the number of packets hitting rules associated with egress ACLs applied to various interfaces on a switch.

The no hardware counter feature acl out and default hardware counter feature acl out commands disable or return the egress ACL hardware counters to the default state.

Command Mode

Global Configuration

Command Syntax

hardware counter feature acl out [OPTIONS]

no hardware counter feature acl out [OPTIONS]

default hardware counter feature acl out [OPTIONS]

Parameters
  • OPTIONS ACL hardware counter options include:
    • ipv4 Address family IPv4.
    • ipv6 Address family IPv6.
Examples
  • This command enables IPv4 egress ACL hardware counters. 
    switch(config)# hardware counter feature acl out ipv4
switch(config)#
  • This command disables IPv4 egress ACL hardware counters. 
    switch(config)# no hardware counter feature acl out ipv4
switch(config)#

ip access-group (Service ACLs)

The ip access-group (Service ACLs) command configures a Service ACL to be applied by a control-plane service. The service is specified by the command mod (Service ACLs)e in which the Service ACL is applied.

The no ip access-group (Service ACLs) and default ip access-group (Service ACLs) commands remove the corresponding ip access-group (Service ACLs) command from running-config.

Command Mode

Mgmt-SSH Configuration

Mgmt-API Configuration

Router-BGP Configuration

Router-OSPF Configuration

Router-IGMP Configuration

MPLS-LDP Configuration

Queue-Monitor-Streaming Configuration

MPLS-Ping Configuration

Mgmt-Telnet Configuration

Command Syntax

ip access-group acl_name [vrfvrf_name][in]

no ip access-group acl_name [vrfvrf_name][in]

default ip access-group acl_name [vrfvrf_name][in]

Parameters

Parameters vary by process.
  • acl_name Name of the Service ACL assigned to control-plane service.
  • vrf vrf_name Specifies the VRF in which the Service ACL is to be applied.
  • in Specifies inbound connections or packets only (keyword required for SSH and Telnet services).

Example

These commands apply the Service ACL bgpacl to the BGP routing protocol in VRF purple.
(config)# router bgp 5
(config-router-bgp)# vrf purple
(config-router-bgp-vrf-purple)# ip access-group bgpacl

For additional configuration examples, see configuring Service ACLs and Displaying Status and Counters.

ip access-group

The ip access-group command applies an IPv4 or standard IPv4 Access Control List (ACL) to the configuration mode interface or subinterface.

The no ip access-group and default ip access-group commands remove the corresponding ip access-group command from running-config.

Command Mode

Interface-Ethernet Configuration

Interface-Port-Channel Configuration

Interface-VLAN Configuration

Command Syntax

ip access-group list_name DIRECTION

no ip access-group list_name DIRECTION

default ip access-group list_name DIRECTION

Parameters
  • list_name Name of ACL assigned to interface.
  • DIRECTION Transmission direction of packets, relative to interface. Valid options include:
    • in Iinbound packets.
    • out Outbound packets.

Restrictions

Filtering of outbound packets by ACLs is not supported on Petra platform switches.

Filtering of outbound packets by ACLs on FM6000 switches is supported on physical interfaces only (Ethernet and port channels).

ACLs on sub-interfaces are supported on DCS-7280E, DCS-7500E, DCS-7280R, and DCS-7500R.

Example

These commands apply the IPv4 ACL named test2 to interface ethernet 3.
switch(config)# interface ethernet 3
switch(config-if-Et3)# ip access-group test2 in
switch(config-if-Et3)#

ip access-list

The ip access-list command places the switch in ACL configuration mode, which is a group change mode that modifies an IPv4 access control list. The command specifies the name of the IPv4 ACL that subsequent commands modify and creates an ACL if it references a nonexistent list. All changes in a group change mode edit session are pending until the end of the session.

The exit command saves pending ACL changes to running-config, then returns the switch to global configuration mode. ACL changes are also saved by entering a different configuration mode.

The abort command discards pending ACL changes, returning the switch to global configuration mode.

The no ip access-list and default ip access-list commands delete the specified IPv4 ACL.

Command Mode

Global Configuration

Command Syntax

ip access-list list_name

no ip access-list list_name

default ip access-list list_name

Parameters

list_name Name of ACL. Must begin with an alphabetic character. Cannot contain spaces or quotation marks.

Commands Available in ACL configuration mode:
Related Commands:
Examples
  • This command places the switch in ACL configuration mode to modify the filter1 IPv4 ACL.
    switch(config)# ip access-list filter1
switch(config-acl-filter1)#
  • This command saves changes to filter1 ACL, then returns the switch to global configuration mode.
    switch(config-acl-filter1)# exit
switch(config)#
  • This command discards changes to filter1, then returns the switch to global configuration mode.
    switch(config-acl-filter1)# abort
switch(config)#

ip access-list standard

The ip access-list standard command places the switch in std-ACL configuration mode, which is a group change mode that modifies a standard IPv4 access control list. The command specifies the name of the standard IPv4 ACL that subsequent commands modify, and creates an ACL if it references a nonexistent list. All group change mode edit session changes are pending until the session ends.

The exit command saves pending ACL changes to running-config, then returns the switch to global configuration mode. Pending changes are also saved by entering a different configuration mode.

The abort command discards pending ACL changes, returning the switch to global configuration mode.

The no ip access-list standard and default ip access-list standard commands delete the specified ACL.

Command Mode

Global Configuration

Command Syntax

ip access-list standard list_name

no ip access-list standard list_name

default ip access-list standard list_name

Parameters

list_name Name of standard ACL. Must begin with an alphabetic character. Cannot contain spaces or quotation marks.

Commands Available in std-ACL configuration mode:
Related Commands
Examples
  • This command places the switch in std-ACL configuration mode to modify the filter2 IPv4 ACL.
    switch(config)# ip access-list standard filter2
switch(config-std-acl-filter2)#
  • This command saves changes to filter2 ACL, then returns the switch to global configuration mode.
    switch(config-std-acl-filter2)# exit
switch(config)#
  • This command discards changes to filter2, then returns the switch to global configuration mode.
    switch(config-std-acl-filter2)# abort
switch(config)#

ip prefix-list

The ip prefix-list command creates a prefix list or adds an entry to an existing list. Route map match commands use prefix lists to filter routes for redistribution into OSPF, RIP, or BGP domains.

A prefix list comprises all prefix list entries with the same label. The sequence numbers of the rules in a prefix list specify the order that the rules are applied to a route that the match command is evaluating.

The no ip prefix-list and default ip prefix-list commands delete the specified prefix list entry by removing the corresponding ip prefix-list statement from running-config. If the no or default ip prefix-list command does not list a sequence number, the command deletes all entries of the prefix list.

Command Mode

Global Configuration

Command Syntax

ip prefix-list list_name [SEQUENCE] FILTER_TYPE network_addr [MASK]

no ip prefix-list list_name [SEQUENCE]

default ip prefix-list list_name [SEQUENCE]

Parameters
  • list_name The label that identifies the prefix list.
  • SEQUENCE Sequence number of the prefix list entry. Options include:
    • no parameter Entry's number is ten plus highest sequence number in current list.
    • seq seq_num Number assigned to entry. Value ranges from 0 to 65535.
  • FILTER_TYPE Specifies route access when it matches IP prefix list. Options include:
    • permit Routes are permitted access when they match the specified subnet.
    • deny Routes are denied access when they match the specified subnet.
  • network_addr Subnet upon which command filters routes. Format is CIDR or address-mask.
  • MASK Range of the prefix to be matched.
    • no parameter Exact match with the subnet mask is required.
    • eq mask_e Prefix length is equal to mask_e.
    • ge mask_g Range is from 1 to 32.
    • le mask_l Range is from subnet mask length to mask_l.
    • ge mask_l le mask_g Range is from mask_g to mask_l.
    • mask_e, mask_l, and mask_g range from 1 to 32. When le and ge are specified, subnet mask mask_g>mask_l.
Example
  • This command places the switch in IPv4 prefix list configuration mode to create an IPv4 prefix list named route-one.
    switch(config)# ip prefix-list route-one
switch(config-ip-pfx)#
  • These commands create four different rules for the prefix-list named route-one.
    switch(config)# ip prefix-list route-one
switch(config-ip-pfx)# seq 10 deny 10.1.1.0/24
switch(config-ip-pfx)# seq 20 deny 10.1.0.0/16
switch(config-ip-pfx)# seq 30 permit 12.15.4.9/32
switch(config-ip-pfx)# seq 40 deny 1.1.1.0/24

ipv6 access-group

The ipv6 access-groupcommand applies an IPv6 or standard IPv6 Access Control List (ACL) to the configuration mode interface.

The no ipv6 access-group and default ipv6 access-group commands remove the corresponding ipv6 access-group command from running-config.

Command Mode

Interface-Ethernet Configuration

Interface-Port-Channel Configuration

Interface-VLAN Configuration

Command Syntax

ipv6 access-group list_name DIRECTION

no ipv6 access-group list_name DIRECTION

default ipv6 access-group list_name DIRECTION

Parameters
  • list_name Name of ACL assigned to interface.
  • DIRECTION Transmission direction of packets, relative to interface. Valid options include:
    • in Inbound packets.
    • out Outbound packets.

Examples

These commands assign the IPv6 ACL named test2 to the interface ethernet 3.
switch(config)# interface ethernet 3
switch(config-if-Et3)# ipv6 access-group test2 in
switch(config-if-Et3)#

ipv6 access-group (Service ACLs)

The ipv6 access-group (Service ACLs) command configures an IPv6 or standard IPv6 Service ACL to be applied by a control-plane service. The service is specified by the command mode in which the Service ACL is applied.

The no ipv6 access-group (Service ACLs) and default ipv6 access-group (Service ACLs) commands remove the corresponding ipv6 access-group (Service ACLs) command from running-config.

Command Mode

Mgmt-SSH Configuration

Mgmt-API Configuration

Router-BGP Configuration

Router-OSPF Configuration

MPLS-LDP Configuration

Queue-Monitor-Streaming Configuration

MPLS-Ping Configuration

Mgmt-Telnet Configuration

Command Syntax

ipv6 access-group ipv6_acl_name [vrfvrf_name][in]

no ipv6 access-group [ipv6_acl_name][vrfvrf_name][in]

default ipv6 access-group ipv6_acl_name [vrf vrf_name][in]

Parameters

Parameters vary by process.
  • ipv6_acl_name Name of the IPv6 Service ACL assigned to control-plane service.
  • vrf vrf_name Specifies the VRF in which the Service ACL is to be applied.
  • in Specifies inbound connections or packets only (keyword required for SSH and Telnet services).

Example

These commands apply the IPv6 Service ACL bgpacl to the BGP routing protocol in VRF purple.
(config)# router bgp 5
(config-router-bgp)# vrf purple
(config-router-bgp-vrf-purple)# ipv6 access-group bgpacl

For additional configuration examples, see configuring Service ACLs and Displaying Status and Counters.

ipv6 access-list

The ipv6 access-list command places the switch in IPv6-ACL configuration mode, which is a group change mode that modifies an IPv6 access control list. The command specifies the name of the IPv6 ACL that subsequent commands modify and creates an ACL if it references a nonexistent list. All changes in a group change mode edit session are pending until the end of the session.

The exit command saves pending ACL changes to running-config, then returns the switch to global configuration mode. ACL changes are also saved by entering a different configuration mode.

The abort command discards pending ACL changes, returning the switch to global configuration mode.

The no ipv6 access-list and default ipv6 access-list commands delete the specified IPv6 ACL.

Command Mode

Global Configuration

Command Syntax

ipv6 access-list list_name

no ipv6 access-list list_name

default ipv6 access-list list_name

Parameters

list_name Name of ACL. Must begin with an alphabetic character. Cannot contain spaces or quotation marks.

Commands Available in IPv6-ACL configuration mode:
Related Commands
Examples
  • This command places the switch in IPv6-ACL configuration mode to modify the filter1 IPv6 ACL.
    switch(config)# ipv6 access-list filter1
switch(config-ipv6-acl-filter1)#
  • This command saves changes to filter1 ACL, then returns the switch to global configuration mode.
    switch(config-ipv6-acl-filter1)# exit
switch(config)#
  • This command discards changes to filter1, then returns the switch to global configuration mode.
    switch(config-ipv6-acl-filter1)# abort
switch(config)#

ipv6 access-list standard

The ipv6 access-list standard command places the switch in std-IPv6-ACL-configuration mode, which is a group change mode that modifies a standard IPv6 access control list. The command specifies the name of the standard IPv6 ACL that subsequent commands modify and creates an ACL if it references a nonexistent list. All group change mode edit session changes are pending until the session ends.

The exit command saves pending ACL changes to running-config, then returns the switch to global configuration mode. Pending changes are also saved by entering a different configuration mode.

The abort command discards pending ACL changes, returning the switch to global configuration mode.

The no ipv6 access-list standard and default ipv6 access-list standard commands delete the specified ACL.

Command Mode

Global Configuration

Command Syntax

ipv6 access-list standard list_name

no ipv6 access-list standard list_name

default ipv6 access-list standard list_name

Parameters

list_name Name of ACL. Must begin with an alphabetic character. Cannot contain spaces or quotation marks.

Commands Available in std-IPv6-ACL configuration mode:
Related Commands
Examples
  • This command places the switch in Std-IPv6 ACL configuration mode to modify the filter2 ACL.
    switch(config)# ipv6 access-list standard filter2
switch(config-std-ipv6-acl-filter2)#
  • This command saves changes to filter2 ACL, then returns the switch to global configuration mode.
    switch(config-std-ipv6-acl-filter2)# exit
switch(config)#
  • This command discards changes to filter2, then returns the switch to global configuration mode.
    switch(config-std-ipv6-acl-filter2)# abort
switch(config)#

ipv6 prefix-list

The ip prefix-list command places the switch in IPv6 prefix-list configuration mode, which is a group change mode that modifies an IPv6 prefix list. The command specifies the name of the IPv6 prefix list that subsequent commands modify and creates a prefix list if it references a nonexistent list. All changes in a group change mode edit session are pending until the end of the session.

The exit command saves pending prefix list changes to running-config, then returns the switch to global configuration mode. ACL changes are also saved by entering a different configuration mode.

The abort command discards pending changes, returning the switch to global configuration mode.

The no ipv6 prefix-list and default ipv6 prefix-list commands delete the specified IPv6 prefix list.

Command Mode

Global Configuration

Command Syntax

ipv6 prefix-list list_name

no ipv6 prefix-list list_name

default ipv6 prefix-list list_name

Parameter

list_name Name of prefix list. Must begin with an alphabetic character. Cannot contain spaces or quotation marks.

Commands Available in IPv6-pfx configuration mode:
Examples
  • This command places the switch in IPv6 prefix-list configuration mode to modify the route-five prefix list.
    switch(config)# ipv6 prefix-list route-five
switch(config-ipv6-pfx)#
  • This command saves changes to the prefix list, then returns the switch to global configuration mode.
    switch(config-ipv6-pfx)# exit
switch(config)#
  • This command saves changes to the prefix list, then places the switch in interface-ethernet mode.
    switch(config-ipv6-pfx)# interface ethernet 3
switch(config-if-Et3)#
  • This command discards changes to the prefix list, then returns the switch to global configuration mode.
    switch(config-ipv6-pfx)# abort
switch(config)#

mac access-group

The mac access-group command applies a MAC Access Control List (MAC ACL) to the configuration mode interface.

The no mac access-group and default mac access-group commands remove the specified mac access-group command from running-config.

Command Mode

Interface-Ethernet Configuration

Interface-Port-Channel Configuration

Command Syntax

mac access-group list_name DIRECTION

no mac access-group list_name DIRECTION

default mac access-group list_name DIRECTION

Parameters
  • list_name Name of MAC ACL.
  • DIRECTION Transmission direction of packets, relative to interface. Valid options include:
    • in Inbound packets.
    • out Outbound packets.

Restrictions

Filtering of outbound packets by MAC ACLs is supported only on Helix, Trident, and Trident II platform switches.

Example

These commands assign the MAC ACL named mtest2 to interface ethernet 3 to filter inbound packets.
switch(config)# interface ethernet 3
switch(config-if-Et3)# mac access-group mtest2 in
switch(config-if-Et3)#

mac access-list

The mac access-list command places the switch in MAC-ACL configuration mode, which is a group change mode that modifies a MAC access control list. The command specifies the name of the MAC ACL that subsequent commands modify and creates an ACL if it references a nonexistent list. All changes in a group change mode edit session are pending until the end of the session.

The exit command saves pending ACL changes to running-config, then returns the switch to global configuration mode. ACL changes are also saved by entering a different configuration mode.

The abort command discards pending ACL changes, returning the switch to global configuration mode.

The no mac access-list and default mac access-list commands delete the specified list.

Command Mode

Global Configuration

Command Syntax

mac access-list list_name

no mac access-list list_name

default mac access-list list_name

Parameters

list_name Name of MAC ACL. Names must begin with an alphabetic character and cannot contain a space or quotation mark.

Commands Available in MAC-ACL configuration mode:
Examples
  • This command places the switch in MAC-ACL configuration mode to modify the mfilter1 MAC ACL.
    switch(config)# mac access-list mfilter1
switch(config-mac-acl-mfilter1)#
  • This command saves changes to mfilter1 ACL, then returns the switch to global configuration mode.
    switch(config-mac-acl-mfilter1)# exit
switch(config)#
  • This command saves changes to mfilter1 ACL, then places the switch in interface-ethernet mode.
    switch(config-mac-acl-mfilter1)# interface ethernet 3
switch(config-if-Et3)#
  • This command discards changes to mfilter1, then returns the switch to global configuration mode.
    switch(config-mac-acl-mfilter1)# abort
switch(config)#

match (route-map)

The match command creates a route map statement entry that specifies one route filtering command. When a statement contains multiple match commands, the permit or deny filter applies to a route only if its properties are equal to corresponding parameters in each match command. When a route properties do not equal the command parameters, the route is evaluated against the next statement in the route map, as determined by sequence number. If all statements fail to permit or deny the route, the route is denied.

The no match and default match commands remove the match command from the configuration mode route map statement by deleting the corresponding command from running-config.

Note: The route map configuration supports only standard ACL.

Command Mode

Route-Map Configuration

Command Syntax

match CONDITION

no match CONDITION

default match CONDITION

Parameters
  • CONDITION Specifies criteria for evaluating a route. Options include:
    • aggregate-role Role in BGP contributor-aggregate relation. Options include:
      • contributor BGP aggregate's contributor.
      • aggregate-attributes Route map to apply against the aggregate route.
    • as 1 to 4294967295 BGP Autonomous System number.
    • as-path path_name BGP Autonomous System path access list.
    • as-path length { <= | = | => } length
      • <=Length of AS path must be less than or equal to specified value.
      • =Length of AS path must be equal to specified value.
      • =>Length of AS path must be equal to or greater than specified value.
      • lengthValue for AS path length comparison (0-4000).
    • community NAME BGP community. Options for NAME include:
      • listname BGP community.
      • listname exact-match BGP community; list must match set that is present.
    • extcommunity listname BGP extended community. Options for listname include:
      • listname BGP community.
      • listname exact-match BGP community; list must match set that is present.
    • interface INTF_NAME Specifies an interface. Options for INTF_NAME include:
      • ethernet e_num Ethernet interface.
      • loopback l_num Loopback interface.
      • port-channel p_num Port channel interface.
      • vlan v_num VLAN interface.
      invert-result Invert sub route map result.
    • ip address LIST IPv4 address filtered by an ACL or prefix list. LIST options include:
      • access-list acl_name IPv4 address filtered by access control list (ACL).
      • prefix-list plv4_name IPv4 address filtered by IP prefix list.
    • ip next-hop prefix-list plv4_name IPv4 next-hop filtered by IP prefix list.
    • ip resolved-next-hop prefix-list plv4_name IPv4 resolved nexthop filtered by IP prefix list.
    • ipv6 address prefix-list plv6_name IPv6 address filtered by IPv6 prefix list.
    • ipv6 next-hop prefix-list plv6_name IPv6 next-hop filtered by IPv6 prefix list.
    • ipv6 resolved-next-hop prefix-list plv6_name IPv6 resolved nexthop filtered by IPv6 prefix list.
    • local-preference 1 to 4294967295 BGP local preference metric.
    • metric 1 to 4294967295 Route metric.
    • metric-type OSPF_TYPE OSPF metric type. Options include:
      • type-1 OSPF type 1 metric.
      • type-2 OSPF type 2 metric.
    • source-protocol protocol_type Routing protocol of route's source. Options include:
      • bgp
      • connected
      • ospf
      • rip
      • static
    • tag 1 to 4294967295 Route tag.

Related Command

route-map

Example

This command creates a route map match rule that filters routes from BGP as 15.
switch(config)# route-map map1
switch(config-route-map-map1)# match as 15
switch(config-route-map-map1)#
This command adds a route-map match rule that the AS path be less than or equal to 300.
switch(config-route-map-map1)#match as-path length <= 300
switch(config-route-map-map1)#

no <sequence number> (ACLs)

The no <sequence number> command removes the rule with the specified sequence number from the ACL. The default <sequence number> command also removes the specified rule.

Command Mode

ACL Configuration

IPv6-ACL Configuration

Std-ACL Configuration

Std-IPv6-ACL Configuration

MAC-ACL Configuration

Command Syntax

no line_num

default line_num

Parameters

line_num Sequence number of rule to be deleted. Values range from 1 - 4294967295.

Example

This command removes statement 30 from the list.
switch(config-acl-test1)# show IP Access List test1
  10 permit ip 10.10.10.0/24 any
  20 permit ip any host 10.20.10.1
  30 deny ip host 10.10.10.1 host 10.20.10.1
  40 permit ip any any
  50 remark end of list
switch(config-acl-test1)# no 30
switch(config-acl-test1)# show IP Access List test1
  10 permit ip 10.10.10.0/24 any
  20 permit ip any host 10.20.10.1
  40 permit ip any any
  50 remark end of list

permit (IPv4 ACL)

The permit command adds a permit rule to the configuration mode IPv4 Access Control List (ACL). Packets filtered by a permit rule are accepted by interfaces to which the ACL is applied. Sequence numbers determine rule placement in the ACL. Sequence numbers for commands without numbers are derived by adding 10 to the number of the ACL's last rule.

The no permit and default permit commands remove the specified rule from the configuration mode ACL. The no <sequence number> (ACLs) command also removes a specified rule from the ACL.

Command Mode

ACL Configuration

Command Syntax

[SEQ_NUM] permit PROTOCOL SOURCE_ADDR [SOURCE_PORT] DEST_ADDR [DEST_PORT][FLAGS][MESSAGE][fragments][tracked][DSCP_FILTER][TTL_FILTER][log]

no permit PROTOCOL SOURCE_ADDR [SOURCE_PORT] DEST_ADDR [DEST_PORT][FLAGS [MESSAGE] [fragments] [tracked][DSCP_FILTER][TTL_FILTER][log]

default permit PROTOCOL SOURCE_ADDR [SOURCE_PORT] DEST_ADDR [DEST_PORT][FLAGS][MESSAGE][fragments][tracked][DSCP_FILTER][TTL_FILTER][log]

Commands use a subset of the listed fields. Available parameters depend on specified protocol. Use CLI syntax assistance to view options for specific protocols when creating a permit rule.

Parameters
  • SEQ_NUM Sequence number assigned to the rule. Options include:
    • no parameter Number is derived by adding 10 to the number of the ACL's last rule.
    • 1 - 4294967295 Number assigned to entry.
  • PROTOCOL Protocol field filter. Values include:
    • ahp Authentication Header Protocol (51).
    • gre Generic Routing Encapsulation.
    • gtp GPRS Tunneling Protocol.
    • icmp Internet Control Message Protocol (1).
    • igmp Internet Group Management Protocol (2).
    • ip Any Internet Protocol v4 (4).
    • ospf Open Shortest Path First (89).
    • pim Protocol Independent Multicast (103).
    • tcp Transmission Control Protocol (6).
    • udp User datagram protocol (17).
    • vlan Enter VLAN number and mask. VLAN value ranges from 1 to 4094; mask value ranges from 0x000-0xFFF .
    • vrrp Virtual Router Redundancy Protocol (112).
    • protocol_num Integer corresponding to an IP protocol. Values range from 0 to 255.
  • SOURCE_ADDR and DEST_ADDR Source and destination address filters. Options include:
    • network_addr subnet address (CIDR or address-mask).
    • any Packets from all addresses are filtered.
    • host ip_addr IP address (dotted decimal notation).

      Source and destination subnet addresses support discontiguous masks.

  • SOURCE_PORT and DEST_PORT Source and destination port filters. Options include:
    • any All ports.
    • eq port-1 port-2 ... port-n A list of ports. Maximum list size is 10 ports.
    • neq port-1 port-2 ... port-n The set of all ports not listed. Maximum list size is 10 ports.
    • gt port The set of ports with larger numbers than the listed port.
    • lt port The set of ports with smaller numbers than the listed port.
    • range port_1 port_2 The set of ports whose numbers are between the range.
  • fragments Filters packets with FO bit set (indicates a non-initial fragment packet).
  • FLAGS Flags bit filters (TCP packets). Use CLI syntax assistance (?) to display options.
  • MESSAGE Message type filters (ICMP packets). Use CLI syntax assistance (?) to display options.
  • tracked Rule filters packets in existing ICMP, UDP, or TCP connections.
    • Valid in ACLs applied to the control plane.
    • Validity in ACLs applied to data plane varies by switch platform.
  • DSCP_FILTER Rule filters packet by its DSCP value. Values include:
    • no parameter Rule does not use DSCP to filter packets.
    • dscp dscp_value Packets match if DSCP field in packet is equal to dscp_value.
  • TTL_FILTER Rule filters packet by its TTL (time-to-live) value. Values include:
    • ttl eq ttl_value Packets match if ttl in packet is equal to ttl_value.
    • ttl gt ttl_value Packets match if ttl in packet is greater than ttl_value.
    • ttl lt ttl_value Packets match if ttl in packet is less than ttl_value.
    • ttl neq ttl_value Packets match if ttl in packet is not equal to ttl_value.
      • Valid in ACLs applied to the control plane.
      • Validity in ACLs applied to data plane varies by switch platform.
  • log Triggers an informational log message to the console about the matching packet.
    • Valid in ACLs applied to the control plane.
    • Validity in ACLs applied to data plane varies by switch platform.
Examples
  • This command appends a permit statement at the end of the ACL. The permit statement passes all OSPF packets from 10.10.1.1/24 to any host.
    switch(config)# ip access-list text1
switch(config-acl-text1)# permit ospf 10.1.1.0/24 any
switch(config-acl-text1)#
  • This command inserts a permit statement with the sequence number 25. The permit statement passes all PIM packets through the interface.
    switch(config-acl-text1)# 25 permit pim any any
switch(config-acl-text1)#
  • These commands configure ACL to permit VLAN traffic between any source and destination host.
    switch(config)# ip access-list acl1
switch(config-acl-acl1)# permit vlan 1234 0x0 ip any any

permit (IPv6 ACL)

The permit command adds a permit rule to the configuration mode IPv6 Access Control List (ACL). Packets filtered by a permit rule are accepted by interfaces to which the ACL is applied. Sequence numbers determine rule placement in the ACL. Sequence numbers for commands without numbers are derived by adding 10 to the number of the ACL’s last rule.

The no permit and default permit commands remove the specified rule from the configuration mode ACL. The no <sequence number> (ACLs) command also removes a specified rule from the ACL.

Command Mode

IPv6-ACL Configuration

Command Syntax

[SEQ_NUM] permit PROT SRC_ADDR [SRC_PT] DEST_ADDR [DEST_PT] [FLAG] [MSG] [HOP] [tracked] [DSCP_FILTER] [FLOW_LABEL] [log]

no permit PROT SRC_ADDR [SRC_PT] DEST_ADDR [DEST_PT] [FLAG] [MSG] [HOP] [tracked] [DSCP_FILTER] [FLOW_LABEL] [ log]

default permit PROT SRC_ADDR [SRC_PT] DEST_ADDR [DEST_PT] [FLAG] [MSG] [HOP] [tracked] [DSCP_FILTER] [FLOW_LABEL] [log]

Note: Commands use a subset of the listed fields. Available parameters depend on specified protocol. Use CLI syntax assistance to view options for specific protocols when creating a permit rule.
Parameters
  • SEQ_NUM Sequence number assigned to the rule. Options include:
    • no parameter Number is derived by adding 10 to the number of the ACL’s last rule.
    • 1 - 4294967295 Number assigned to entry.
  • PROT Protocol field filter. Values include:
    • icmpv6 Internet Control Message Protocol for v6 (58).
    • ipv6 Internet Protocol IPv6 (41).
    • ospf Open Shortest Path First (89).
    • tcp Transmission Control Protocol (6).
    • udp User Datagram Protocol (17).
    • vlan Enter VLAN number. Value ranges from 1 to 4094.
    • protocol_num Integer corresponding to an IP protocol. Values range from 0 to 255.
  • SRC_ADDR and DEST_ADDR Source and destination address filters. Options include:
    • ipv6_prefix IPv6 address with prefix length (CIDR notation).
    • any Packets from all addresses are filtered.
    • host ipv6_addr IPv6 host address.
  • SRC_PT and DEST_PT Source and destination port filters. Options include:
    • any All ports.
    • eq port-1 port-2 ... port-n A list of ports. Maximum list size is 10 ports.
    • neq port-1 port-2 ... port-n The set of all ports not listed. Maximum list size is 10 ports.
    • gt port The set of ports with larger numbers than the listed port.
    • lt port The set of ports with smaller numbers than the listed port.
    • range port_1 port_2 The set of ports whose numbers are in the range.
  • HOP The rule filters by packet’s hop-limit value. Options include:
    • no parameter The rule does not use hop limit to filter packets.
    • hop-limit eq hop_value Packets match if hop-limit value in packet equals hop_value.
    • hop-limit gt hop_value Packets match if hop-limit in packet is greater than hop_value.
    • hop-limit lt hop_value Packets match if hop-limit in packet is less than hop_value.
    • hop-limit neq hop_value Packets match if hop-limit in packet is not equal to hop_value.
  • FLAG Flag bit filters (TCP packets). Use CLI syntax assistance (?) to display options.
  • MSG Message type filters (ICMPv6 packets). Use CLI syntax assistance (?) to display options.
  • tracked The rule filters packets in existing ICMP, UDP, or TCP connections.
    • Valid in ACLs applied to the control plane.
    • Validity in ACLs applied to data plane varies by switch platform.
  • DSCP_FILTER The rule filters packet by its DSCP value. Values include:
    • no parameter The rule does not use DSCP to filter packets.
    • dscp dscp_value Packets match if DSCP field in packet is equal to dscp_value.
  • FLOW_LABEL The rule permits packets with IPv6 flow labels matching an exact value or a pattern based on a mask. Options include:
    • no parameter The rule does not use IPv6 flow labels to filter packets.
    • flow-label eq ipv6_flow_label The IPv6 flow label must exactly match ipv6_flow_label. Flow labels can range from 0 to 1048575.
    • flow-label ipv6_flow_label flow_label_mask The IPv6 flow label must match a pattern defined by ipv6_flow_label and flow_label_mask. The mask is an inverse mask. Where the mask has a 0 bit, the flow label must match the ipv6_flow_label value, and where the mask has a 1 bit, the corresponding bit in the flow label is ignored. For example, if ipv6_flow_label is 10 (0b01010 in binary) and flow_label_mask is 0x14 (0b10100 in binary), the rule will match flow labels described by 0b.1.10 (where “.” is a wildcard and can be either 0 or 1); the flow labels that will match are 10 (0b01010), 14 (0b0110), 26 (0b11010), and 30 (0b1110). Flow labels can range from 0 to 1048575 and flow label masks can range from 0x00000 to 0xfffff.
  • log Pass an informational log message to the console when a packet matches.
    • Valid in ACLs applied to the control plane.
    • Validity in ACLs applied to data plane varies by switch platform.
Examples
  • This command appends a permit statement at the end of the ACL. The permit statement passes all IPv6 packets with the source address 3710:249a:c643:ef11::/64 and with any destination address.
    switch(config)#ipv6 access-list acl1
switch(config-acl-acl1)#permit ipv6 3710:249a:c643:ef11::/64 any
switch(config-acl-acl1)#exit
switch(config)#
  • These commands configure ACL to permit VLAN traffic between any source and destination host.
    switch(config)#ip access-list acl2
switch(config-acl-acl2)#permit ipv6 vlan 1234 0x0 ip any any
switch(config-acl-acl2)#exit
switch(config)#
  • These commands add a rule to permit all IPv6 packets with flow label 23.
    switch(config)#ipv6 access-list acl3
switch(config-acl-acl3)#permit ipv6 any any flow-label eq 23
switch(config-acl-acl3)#exit
switch(config)#
  • These commands create a rule to permit all IPv6 packets matched by the flow label 23 and the mask 0x5678.
    switch(config)#ipv6 access-list acl4
switch(config-acl-acl4)#permit ipv6 any any flow-label 23 0x5678
switch(config-acl-acl4)#exit
switch(config)#

permit (IPv6 Prefix List)

The permit command adds a rule to the configuration mode IPv6 prefix list. Route map match commands use prefix lists to filter routes for redistribution into OSPF, RIP, or BGP domains. Routes are redistributed into the specified domain when they match the prefix that a permit statement specifies.

The no permit and default permit commands remove the specified rule from the configuration mode prefix list. The no seq (IPv6 Prefix Lists) command also removes the specified rule from the prefix list.

Command Mode

IPv6-pfx Configuration

Command Syntax

[SEQUENCE] permit ipv6_prefix [MASK]

Parameters
  • SEQUENCE Sequence number assigned to the rule. Options include:
    • no parameter Number is derived by adding 10 to the number of the list's last rule.
    • seq seq_num Number is specified by seq_num. Value ranges from 0 to 65535.
  • ipv6_prefix IPv6 prefix upon which command filters routes (CIDR notation).
  • MASK Range of the prefix to be matched.
    • no parameter Exact match with the subnet mask is required.
    • eq mask_e Prefix length is equal to mask_e.
    • ge mask_g Range is from mask_g to 128.
    • le mask_l Range is from subnet mask length to mask_l.
    • ge mask_l le mask_g Range is from mask_g to mask_l.
    • mask_e, mask_l and mask_g range from 1 to 128.
    • When le and ge are specified, the prefix list size mask_g mask_l.

Example

This command appends a permit statement at the end of the text1 prefix list. The permit statement allows redistribution of routes with the specified prefix.
switch(config)# ipv6 prefix-list route-five
switch(config-ipv6-pfx)# permit 3100::/64
switch(config-ipv6-pfx)#

permit (MAC ACL)

The permit command adds a permit rule to the configuration mode MAC access control list packets through the interface to which the list is applied. Rule filters include protocol, source, and destination.

The no permit and default permit commands remove the specified rule from the configuration mode ACL. The no <sequence number> (ACLs) command also removes the specified rule from the ACL.

Command Mode

MAC-ACL Configuration

Command Syntax

[SEQ_NUM] permit SOURCE_ADDR DEST_ADDR [PROTOCOL][log]

no permit SOURCE_ADDR DEST_ADDR [PROTOCOL][log]

default permit SOURCE_ADDR DEST_ADDR [PROTOCOL][log]

Parameters
  • SEQ_NUM Sequence number assigned to the rule. Options include:
    • no parameter Number is derived by adding 10 to the number of the ACL's last rule.
    • 1 - 4294967295 Number assigned to entry.
  • SOURCE_ADDR and DEST_ADDR Source and destination address filters. Options include:
    • mac_address mac_mask MAC address and mask.
    • any Packets from all addresses are filtered.

    • mac_address Specifies a MAC address in 3x4 dotted hexadecimal notation (hhhh.hhhh.hhhh).

    • mac_mask Specifies a MAC address mask in 3x4 dotted hexadecimal notation (hhhh.hhhh.hhhh).
    • 0 bits require an exact match to filter.
    • 1 bits filter on any value.
  • PROTOCOL Protocol field filter. Values include:
    • aarp Appletalk Address Resolution Protocol (0x80f3).
    • appletalk Appletalk (0x809b).
    • arp Address Resolution Protocol (0x806).
    • ip Internet Protocol Version 4 (0x800).
    • ipx Internet Packet Exchange (0x8137).
    • lldp LLDP (0x88cc).
    • novell Novell (0x8138).
    • rarp Reverse Address Resolution Protocol (0x8035).
    • protocol_num Integer corresponding to a MAC protocol. Values range from 0 to 65535.
  • log Triggers an informational log message to the console about the matching packet.
Examples
  • This command appends a permit statement at the end of the ACL. The permit statement passes all aarp packets from 10.1000.0000 through 10.1000.FFFF to any host.
    switch(config)# mac access-list text1
switch(config-mac-acl-text1)# permit 10.1000.0000 0.0.FFFF any aarp
switch(config-mac-acl-text1)#
  • This command inserts a permit statement with the sequence number 25. The permit statement passes all packets through the interface.
    switch(config-mac-acl-text1)# 25 permit any any
switch(config-mac-acl-text1)#

permit (Standard IPv4 ACL)

The permit command adds a permit rule to the configuration mode standard IPv4 Access Control List (ACL). Standard ACL rules filter on the source field.

Packets filtered by a permit rule are accepted by interfaces to which the ACL is applied. Sequence numbers determine rule placement in the ACL. Sequence numbers for commands without numbers are derived by adding 10 to the number of the ACL's last rule.

The no permit and default permit commands remove the specified rule from the configuration mode ACL. The no <sequence number> (ACLs) command also removes the specified rule from the ACL.

Command Mode

Std-ACL Configuration

Command Syntax

[SEQ_NUM] permit SOURCE_ADDR [log]

no permit SOURCE_ADDR [log]

default permit SOURCE_ADDR [log]

Parameters
  • SEQ_NUM Sequence number assigned to the rule. Options include:
    • no parameter Number is derived by adding 10 to the number of the ACL's last rule.
    • 1 - 4294967295 Number assigned to entry.
  • SOURCE_ADDR Source address filter. Options include:
    • network_addr Subnet address (CIDR or address-mask).
    • any Packets from all addresses are filtered.
    • host ip_addr IP address (dotted decimal notation).

      Subnet addresses support discontiguous masks.

  • log Triggers an informational log message to the console about the matching packet.
    • Valid in ACLs applied to the control plane.
    • Validity in ACLs applied to data plane varies by switch platform.

Example

This command appends a permit statement at the end of the ACL. The permit statement passes all packets with a source address of 10.10.1.1/24.
switch(config)# ip access-list standard text1
switch(config-std-acl-text1)# permit 10.1.1.1/24
switch(config-std-acl-text1)#

permit (Standard IPv6 ACL)

The permit command adds a permit rule to the configuration mode standard IPv6 access control list. Standard ACL rules filter on the source field.

Packets filtered by a permit rule are accepted by interfaces to which the ACL is applied. Sequence numbers determine rule placement in the ACL. Sequence numbers for commands without numbers are derived by adding 10 to the number of the ACL's last rule.

The no permit and default permit commands remove the specified rule from the configuration mode ACL. The no <sequence number> (ACLs) command also removes the specified rule from the ACL.

Command Mode

Std-IPv6-ACL Configuration

Command Syntax

[SEQ_NUM] permit SOURCE_ADDR

no permit SOURCE_ADDR

default permit SOURCE_ADDR

Parameters
  • SEQ_NUM Sequence number assigned to the rule. Options include:
    • no parameter Number is derived by adding 10 to the number of the ACL's last rule.
    • 1 - 4294967295 Number assigned to entry.
  • SOURCE_ADDR Source address filter. Options include:
    • ipv6_prefix IPv6 address with prefix length (CIDR notation).
    • any Packets from all addresses are filtered.
    • host ipv6_addr IPv6 host address.

Example

This command appends a permit statement at the end of the ACL. The permit statement drops packets with a source address of 2103::/64.
switch(config)# ipv6 access-list standard text1
switch(config-std-acl-ipv6-text1)# permit 2103::/64
switch(config-std-acl-ipv6-text1)#

remark

The remark command adds a non-executable comment statement into the pending ACL. Remarks entered without a sequence number are appended to the end of the list. Remarks entered with a sequence number are inserted into the list as specified by the sequence number.

The default remark command removes the comment statement from the ACL.

The no remark command removes the comment statement from the ACL. The command can specify the remark by content or by sequence number.

Command Mode

ACL Configuration

IPv6-ACL Configuration

Std-ACL Configuration

Std-IPv6-ACL Configuration

MAC-ACL Configuration

Command Syntax

remark text

line_num remark [text]

no remark text

default remark text

Parameters
  • text The comment text.
  • line_num Sequence number assigned to the remark statement. Value ranges from 1 - 4294967295.

Example

This command appends a comment to the list.
switch(config-acl-test1)# remark end of list
switch(config-acl-test1)# show
IP Access List test1
  10 permit ip 10.10.10.0/24 any
  20 permit ip any host 10.20.10.1
  30 deny ip host 10.10.10.1 host 10.20.10.1
  40 permit ip any any  
  50 remark end of list

resequence (ACLs)

The resequence command assigns sequence numbers to rules in the configuration mode ACL. Command parameters specify the number of the first rule and the numeric interval between consecutive rules.

Maximum rule sequence number is 4294967295.

Command Mode

ACL Configuration

IPv6-ACL Configuration

Std-ACL Configuration

Std-IPv6-ACL Configuration

MAC-ACL Configuration

Command Syntax

resequence [start_num [inc_num]]

Parameters
  • start_num Sequence number assigned to the first rule. Default is 10.
  • inc_num Numeric interval between consecutive rules. Default is 10.

Example

The resequence command re-numbers the list, starting the first command at number 100 and incrementing subsequent lines by 20.

  • switch(config-acl-test1)# show
IP Access List test1
  10 permit ip 10.10.10.0/24 any
  20 permit ip any host 10.20.10.1
  30 deny ip host 10.10.10.1 host 10.20.10.1
  40 permit ip any any
  50 remark end of list
switch(config-acl-test1)# resequence 100 20
switch(config-acl-test1)# show
IP Access List test1
  100 permit ip 10.10.10.0/24 any
  120 permit ip any host 10.20.10.1
  140 deny ip host 10.10.10.1 host 10.20.10.1
  160 permit ip any any
  180 remark end of list

route-map

The route-map command places the switch in route map configuration mode, which is a group change mode that modifies a route map statement. The command specifies the name and number of the route map statement that subsequent commands modify and creates a route map statement if it references a nonexistent statement. All changes in a group change mode edit session are pending until the end of the session.

Route maps define commands for redistributing routes between routing protocols. A route map statement is identified by a name, filter type (permit or deny), and sequence number. Statements with the same name are components of a single route map; the sequence number determines the order in which the statements are compared to a route.

The exit command saves pending route map statement changes to running-config, then returns the switch to global configuration mode. ACL changes are also saved by entering a different configuration mode.

The abort command discards pending changes, returning the switch to global configuration mode.

The no route-map and default route-map commands delete the specified route map statement from running-config.

Note: The route map configuration supports only standard ACL.

Command Mode

Global Configuration

Command Syntax

route-map map_name [FILTER_TYPE] [sequence_number]

no route-map map_name [FILTER_TYPE] [sequence_number]

default route-map map_name [FILTER_TYPE][sequence_number]

Parameters
  • map_name Label assigned to route map. Protocols reference this label to access the route map.
  • FILTER_TYPE Disposition of routes matching commands specified by route map statement.
    • permit Routes are redistributed when they match route map statement.
    • deny Routes are not redistributed when they match route map statement.
    • no parameter Sssigns permit as the FILTER_TYPE.
When a route does not match the route map criteria, the next statement within the route map is evaluated to determine the redistribution action for the route.
  • sequence_number The route map position relative to other statements with the same name.
    • no parameter Sequence number of 10 (default) is assigned to the route map.
    • 1-16777215 Specifies sequence number assigned to route map.
Commands Available in route map configuration mode:
Examples
  • This command creates the route map named map1 and places the switch in route map configuration mode. The route map is configured as a permit map.
    switch(config)# route-map map1 permit 20
switch(config-route-map-map1)#
  • This command saves changes to map1 route map, then returns the switch to global configuration mode.
    switch(config-route-map-map1)# exit
switch(config)#
  • This command saves changes to map1 route map, then places the switch in interface-Ethernet mode.
    switch(config-route-map-map1)# interface ethernet 3
switch(config-if-Et3)#
  • This command discards changes to map1 route map, then returns the switch to global configuration mode.
    switch(config-route-map-map1)# abort
switch(config)#

seq (IPv6 Prefix Lists)

The no seq command removes the rule with the specified sequence number from the ACL. The default seq command also removes the specified rule.

The seq keyword is a command option used at the beginning of deny (IPv6 Prefix List) and permit (IPv6 Prefix List) commands that places a new rule between two existing rules.

Command Mode

IPv6-pfx Configuration

Command Syntax

no seq line_num

default seq line_num

Parameters

line_num Sequence number of rule to be deleted. Valid rule numbers range from 0 to 65535.

Example

These commands remove rule 20 from the map1 prefix list, then displays the resultant list.
switch(config)# ipv6 prefix-list map1
switch(config-ipv6-pfx)# no seq 20
switch(config-ipv6-pfx)# exit
switch(config)# show ipv6 prefix-list map1
ipv6 prefix-list map1
seq 10 permit 3:4e96:8ca1:33cf::/64
seq 15 deny 3:4400::/64
seq 30 permit 3:1bca:3ff2:634a::/64
seq 40 permit 3:1bca:1141:ab34::/64
switch(config)#

set (route-map)

The set command specifies modifications to routes that are selected for redistribution by the configuration mode route map.

The no set and default set commands remove the specified set command from the configuration mode route map statement by deleting the corresponding set command from running-config.

Command Mode

Route-Map Configuration

Command Syntax

set CONDITION

no set CONDITION

default set CONDITION

Parameters
  • CONDITION Specifies the route modification parameter and value. Options include:
    • as-path prepend BGP AS number that is prepended to as-path. For details, see the set as-path prepend command.
      • 1 - 4294967295 BGP AS number to prepend.
      • auto Use peer AS number for inbound and local AS for outbound to prepend.
    • distance 1 - 255 Protocol independent administrative distance.
    • ip next-hop ipv4_address Next hop IPv4 address.
    • ip next-hop peer-address Use BGP peering address as next hop IPv4 address.
    • ipv6 next-hop ipv6_address Next hop IPv6 address.
    • ipv6 next-hop peer-address Use BGP peering address as next hop IPv6 address.
    • local-preference 1 - 4294967295 BGP local preference metric.
    • metric 1 - 4294967295 Route metric.
    • metric + 1 - 4294967295 Add specified value to current route metric.
    • metric - 1 - 4294967295 Subtract specified value to current route metric.
    • metric-type OSPF_TYPE OSPF metric type. Options include:
      • type-1 OSPF type 1 metric.
      • type-2 OSPF type 2 metric.
    • origin O_TYPE BGP origin attribute. Options for O_TYPE include:
      • egp Exterior BGP route.
      • igp Interior BGP route.
      • incomplete BGP route of unknown origin.
    • tag 1 - 4294967295 Route tag.
    • weight 1 - 65535 BGP weight parameter.
Related Commands

Example

This command creates a route map entry that sets the local preference metric to 100 on redistributed routes.
switch(config)# route-map map1
switch(config-route-map-map1)# set local-preference 100
switch(config-route-map-map1)#

set as-path match

The set as-path match command configures the AS_PATH attribute for prefixes that are either received from a BGP neighbor or advertised to a BGP neighbor in the route map configuration mode.

The no set as-path match command removes the AS path specified for the BGP prefix.

Command Mode

Route-Map Configuration

Command Syntax

set as-path match all replacement [[none | auto] as_path]

no set as-path match all replacement [[none | auto] as_path]

Parameters
  • none Replaces the AS-Path of the matching routes with a null or an empty AS-Path.
  • auto iF the specific route map is applied as an inbound policy to a corresponding BGP neighbor statement, then replace the AS_PATH of the prefixes received from this neighbor with the neighbor's AS number. If this route map is applied as an outbound policy to a corresponding neighbor statement, then replace the AS_PATH of the prefixes advertised to this neighbor with the locally configured AS number.
  • as_path Replaces the AS-Path of the matching routes with an arbitrary AS-Path.
Examples
  • This command replaces the AS-Path with the none option.
    switch# show ip bgp neighbors 80.80.1.2 advertised-routes
BGP routing table information for VRF default
Router identifier 202.202.1.1, local AS number 200
Route status codes: s - suppressed, * - valid, > - active, # - not installed, E 
- ECMP head, e - ECMP
S - Stale, c - Contributing to ECMP, b - backup, L - labeled-unicast, q - Queued 
for advertisement
Origin codes: i - IGP, e - EGP, ? - incomplete
AS Path Attributes: Or-ID - Originator ID, C-LST - Cluster List, LL Nexthop - 
Link Local Nexthop

Network Next Hop Metric LocPref Weight Path
* > 101.101.1.0/24 80.80.1.1 - - - 200 i
* > 102.102.1.0/24 80.80.1.1 - - - 200 i
* > 103.103.1.0/24 80.80.1.1 - - - 200 302 i
* > 202.202.1.0/24 80.80.1.1 - - - 200 i

switch# configure terminal
switch(config)# route-map foo permit 10
switch(config-route-map-foo)# set as-path match all replacement none
switch(config-route-map-foo)# exit
switch(config)# router bgp 200
switch(config-router-bgp)# neighbor 80.80.1.2 route-map foo out
switch(config-router-bgp)# end

switch# show ip bgp neighbors 80.80.1.2 advertised-routes
BGP routing table information for VRF default
Router identifier 202.202.1.1, local AS number 200
Route status codes: s - suppressed, * - valid, > - active, # - not installed, E 
- ECMP head, e - ECMP
S - Stale, c - Contributing to ECMP, b - backup, L - labeled-unicast, q - Queued 
for advertisement
Origin codes: i - IGP, e - EGP, ? - incomplete
AS Path Attributes: Or-ID - Originator ID, C-LST - Cluster List, LL Nexthop - 
Link Local Nexthop

Network Next Hop Metric LocPref Weight Path
* > 101.101.1.0/24 80.80.1.1 - - - 200 i
* > 102.102.1.0/24 80.80.1.1 - - - 200 i
* > 103.103.1.0/24 80.80.1.1 - - - 200 i
* > 202.202.1.0/24 80.80.1.1 - - - 200 i
  • The AS-Path of matching prefixes are replaced with an empty or a null AS-Path. AS 302 is removed from prefix 103.103.1.0/24 as shown in the above output.
    • This command replaces the AS-Path with the auto option.
      switch(config)# route-map foo permit 10
switch(config-route-map-foo)# set as-path match all replacement auto
switch(config-route-map-foo)# end

switch# show ip bgp neighbors 80.80.1.2 advertised-routes
BGP routing table information for VRF default
Router identifier 202.202.1.1, local AS number 200
Route status codes: s - suppressed, * - valid, > - active, # - not installed, E 
- ECMP head, e - ECMP
S - Stale, c - Contributing to ECMP, b - backup, L - labeled-unicast, q - Queued 
for advertisement
Origin codes: i - IGP, e - EGP, ? - incomplete
AS Path Attributes: Or-ID - Originator ID, C-LST - Cluster List, LL Nexthop - 
Link Local Nexthop

Network Next Hop Metric LocPref Weight Path
* > 101.101.1.0/24 80.80.1.1 - - - 200 200 i
* > 102.102.1.0/24 80.80.1.1 - - - 200 200 i
* > 103.103.1.0/24 80.80.1.1 - - - 200 200 i
* > 202.202.1.0/24 80.80.1.1 - - - 200 200 i

      The AS-Path of matching prefixes are replaced with the locally configured AS 200.

    • This command replaces the AS-Path with another AS-Path.
      switch(config)# route-map foo permit 10
switch(config-route-map-foo)# set as-path match all replacement 500 600
switch(config-route-map-foo)# end

switch# show ip bgp neighbors 80.80.1.2 advertised-routes
BGP routing table information for VRF default
Router identifier 202.202.1.1, local AS number 200
Route status codes: s - suppressed, * - valid, > - active, # - not installed, E 
- ECMP head, e - ECMP
S - Stale, c - Contributing to ECMP, b - backup, L - labeled-unicast, q - Queued 
for advertisement
Origin codes: i - IGP, e - EGP, ? - incomplete
AS Path Attributes: Or-ID - Originator ID, C-LST - Cluster List, LL Nexthop - 
Link Local Nexthop

Network Next Hop Metric LocPref Weight Path
* > 101.101.1.0/24 80.80.1.1 - - - 200 500 600 i
* > 102.102.1.0/24 80.80.1.1 - - - 200 500 600 i
* > 103.103.1.0/24 80.80.1.1 - - - 200 500 600 i
* > 202.202.1.0/24 80.80.1.1 - - - 200 500 600 i

      The AS-Path of matching prefixes are replaced with 500 600 as configured.

  • This command replaces the AS-Path with a combination of auto and an AS-Path.
    switch(config)# route-map foo permit 10
switch(config-route-map-foo)# set as-path match all replacement auto 500 600
switch(config-route-map-foo)# end

switch# show ip bgp neighbors 80.80.1.2 advertised-routes
BGP routing table information for VRF default
Router identifier 202.202.1.1, local AS number 200
Route status codes: s - suppressed, * - valid, > - active, # - not installed, E 
- ECMP head, e - ECMP
 S - Stale, c - Contributing to ECMP, b - backup, L - labeled-unicast, q - Queued 
for advertisement
Origin codes: i - IGP, e - EGP, ? - incomplete
AS Path Attributes: Or-ID - Originator ID, C-LST - Cluster List, LL Nexthop - 
Link Local Nexthop

 Network Next Hop Metric LocPref Weight Path
 * > 101.101.1.0/24 80.80.1.1 - - - 200 200 500 600 i
 * > 102.102.1.0/24 80.80.1.1 - - - 200 200 500 600 i
 * > 103.103.1.0/24 80.80.1.1 - - - 200 200 500 600 i
 * > 202.202.1.0/24 80.80.1.1 - - - 200 200 500 600 i

    The AS-Path of matching prefixes are replaced with the locally configured AS 200 and 500 600.

set as-path prepend

The set as-path prepend command adds a set statement to a route map to prepend one or more Autonomous System (AS) numbers to the AS_PATH attribute of a BGP route.

The no set as-path prepend and default set as-path prepend commands remove the specified set statements from the route map and update all corresponding routes.

Command Mode

Route-Map Configuration

Command Syntax

set as-path prepend {{auto | as_number... [auto | as_number]} | last-as count}

no set as-path prepend {{auto | as_number... [auto | as_number]} | last-as count}

default set as-path prepend {{auto | as_number... [auto | as_number]} | last-as count}

Parameters
  • auto Prepends the peer AS number for peer inbound route maps and the local AS number for peer outbound route maps.
  • as_number Prepends the specified AS number. Can be entered in plain notation (values range from 1-4294967295) or in asdot notation as described in RFC 5396. In asdot notation, AS numbers from 1-65535 are entered in plain notation, and AS numbers from 65536 to 4294967295 are entered as two values separated by a dot. The first value is high-order and represents a multiple of 65536; the second value is low-order and represents a decimal integer. For example, AS number 65552 can be entered as either 65552 or 1.16 (i.e., 1*65536+16). However they are entered, AS numbers are stored internally in plain decimal notation and will appear that way in show outputs.
  • last-as count Prepends the last AS number in the AS path count times. Values range from 1 to 15. This is mutually exclusive with the use of the auto keyword or the entry of one or more specified AS numbers, and is not supported in multi-agent mode.
Examples
  • These commands create a route-map entry that prepends AS number 64496 and prepends either the peer or local AS number twice.
    switch(config)# route-map map1
switch(config-route-map-map1)# set as-path prepend 64496 auto auto
switch(config-route-map-map1)# exit

switch(config)# show route-map map1
route-map map1 permit 10
  Description:
  Match clauses:
  SubRouteMap:
  Set clauses:
    set as-path prepend 64496 auto auto
switch(config)#
  • The commands create a route-map entry that prepends AS numbers 64496, 64498, and 65552.
    switch(config)# route-map map2
switch(config-route-map-map2)# set as-path prepend 64496 64498 1.16
switch(config-route-map-map2)# exit

switch(config)# show route-map map2
route-map map2 permit 10
  Description:
  Match clauses:
  SubRouteMap:
  Set clauses:
    set as-path prepend 64496 64498 65552
switch(config)#
  • These commands create a route map entry that prepends the last AS number 12 times.
    switch(config)# route-map map3
switch(config-route-map-map3)# set as-path prepend last-as 12
switch(config-route-map-map3)# exit

switch(config)# show route-map map3
route-map map3 permit 10
  Description:
  Match clauses:
  SubRouteMap:
  Set clauses:
    set as-path prepend last-as 12
switch(config)#

set community (route-map)

The set community command specifies community attribute modifications to routes that are selected for redistribution by the configuration mode route map. The set community none command removes community attributes from the route.

The no set community and default set community commands remove the specified community from the configuration mode route map statement by deleting the corresponding statement from the running config.

Command Mode

Route-Map Configuration

Command Syntax

set community [GSHUT | aa:nn | community-list | internet | local-as | no-advertise | no-export | none | number]

no set community [GSHUT | aa:nn | additive | community-list | delete | internet | local-as | no-advertise | no-export | none | number]

default set community [GSHUT | aa:nn | additive | community-list | delete | internet | local-as | no-advertise | no-export | none | number]

Parameters
  • GSHUT Configures a graceful shutdown in BGP.
  • aa:nn Configures the community AS and network number, separated by colon. Value ranges from 0:0 to 65535:65535.
  • community-list A label for community list.
  • internet Advertises route to the Internet community.
  • local-as Advertises route only to local peers.
  • no-advertise Does not advertise route to any peer.
  • no-export Advertises route only within BGP AS boundary.
  • none Does not provide any community attributes.
  • number Configures the community number. Value ranges from 1 to 4294967040.
  • additive Adds specified attributes to the current community.
  • delete Removes specified attributes from the current community.
Related Commands

Guideline

eos does not support disabling the process of graceful shutdown community.

Example

This command advertises routes only to local peers.
switch(config-route-map-map1)# show active
route-map map1 permit 10
   match community instances <= 50
   set community 0:456 0:2345
switch(config-route-map-map1)# set community local-as
switch(config-route-map-map1)# ip community-list 345 permit 23
switch(config)# route-map map1
switch(config-route-map-map1)# show active
route-map map1 permit 10
   match community instances <= 50
   set community 0:456 0:2345 local-as
switch(config-route-map-map1)#

set extcommunity (route-map)

The set extcommunity command specifies extended community attribute modifications to routes that are selected for redistribution by the configuration mode route map. The set extcommunity none command removes extended community attributes from the route.

The no set extcommunity and default set extcommunity commands remove the specified set extcommunity command from the configuration mode route map statement by deleting the corresponding statement from running-config.

Command Mode

Route-Map Configuration

Command Syntax

set extcommunity COND_X [COND_2][COND_N][MOD_TYPE]

set extcommunity none

no set extcommunityCOND_X[COND_2][COND_N][MOD_TYPE]

no set extcommunity none

default set extcommunity COND_X [COND_2][COND_N][MOD_TYPE]

default set extcommunity none

Parameters
  • COND_X Specifies extended community route map modification. Command may contain multiple attributes. Options include:
    • rt ASN:nn Route target attribute (AS:network number).
    • rt IP-address:nn Route target attribute (IP address: network number).
    • soo ASN:nn Site of origin attribute (AS:network number).
    • soo IP-address:nn Site of origin attribute (IP address: network number).
  • MOD_TYPE Specifies route map modification method. Options include:
    • no parameter Command replaces existing route map with specified parameters.
    • additive Command adds specified parameters to existing route map.
    • delete Command removes specified parameters from existing route map.
Related Commands
  • route-map enters route map configuration mode.
  • set (route-map) specifies attribute modifications for the redistributed routes.

Example

This command creates a route map entry in map1 that sets the route target extended community attribute.
switch(config)# route-map map1
switch(config-route-map-map1)# set extcommunity rt 10.13.2.4:100
switch(config-route-map-map1)#

show (ACL configuration modes)

The show command displays the contents of an Access Control List (ACL).
  • show or show pending displays the list as modified in ACL configuration mode.
  • show active displays the list as stored in running-config.
  • show comment displays the comment stored with the list.
  • show diff displays the modified and stored lists, with flags denoting the modified rules.

Exiting the ACL configuration mode stores all pending ACL changes to running-config.

Command Mode

ACL Configuration

IPv6-ACL Configuration

Std-ACL Configuration

Std-IPv6-ACL Configuration

MAC-ACL Configuration

Command Syntax

show

show active

show comment

show diff

show pending

Examples

The examples in this section assume these ACL commands are entered as specified.

These commands are stored in none: 

10 permit ip 10.10.10.0/24 any
20 permit ip any host 10.21.10.1
30 deny ip host 10.10.10.1 host 10.20.10.1
40 permit ip any any
50 remark end of list

The current edit session removed this command. This change is not yet stored to none: 

20 permit ip any host 10.21.10.1

The current edit session added these commands ACL. They are not yet stored to none: 

20 permit ip 10.10.0.0/16 any
25 permit tcp 10.10.20.0/24 any
45 deny pim 239.24.124.0/24 10.5.8.4/30
  • This command displays the ACL, as stored in the configuration.
    switch(config-acl-test_1)# show active
IP Access List test_1
  10 permit ip 10.10.10.0/24 any
  20 permit ip any host 10.21.10.1
  30 deny ip host 10.10.10.1 host 10.20.10.1
  40 permit ip any any
  50 remark end of list
  • This command displays the pending ACL, as modified in ACL configuration mode.
    switch(config-acl-test_1)# show pending
IP Access List test_1
  10 permit ip 10.10.10.0/24 any
  20 permit ip 10.10.0.0/16 any
  25 permit tcp 10.10.20.0/24 any
  30 deny ip host 10.10.10.1 host 10.20.10.1
  40 permit ip any any
  45 deny pim 239.24.124.0/24 10.5.8.4/30
  50 remark end of list
  • This command displays the difference between the saved and modified ACLs.
    • Rules added to the pending list are denoted with a plus sign (+).
    • Rules removed from the saved list are denoted with a minus sign (-)
      switch(config-acl-test_1)# show diff
---
+++
@@ -1,7 +1,9 @@
 IP Access List test_1
  10 permit ip 10.10.10.0/24 any
  20 permit ip any host 10.21.10.1
  20 permit ip 10.10.0.0/16 any
  25 permit tcp 10.10.20.0/24 any
  30 deny ip host 10.10.10.1 host 10.20.10.1
  40 permit ip any any  
  45 deny pim 239.24.124.0/24 10.5.8.4/30

show hardware tcam profile

The show hardware tcam profile command displays the hardware specific information for the current operational TCAM profile in the running configuration.

This command is applicable to DCS-7280(E/R) and DCS-7500(E/R) series switches only.

Command Mode

EXEC

Command Syntax

show hardware tcam profile

Parameters
  • tcam Specifies the TCAM information.
  • profile Specifies the TCAM profile information.

Example

This command displays the current operational TCAM profile details.
switch# show hardware tcam profile
Configuration        Status
FixedSystem          default              default

show ip access-lists

The show ip access-list command displays the contents of IPv4 and standard IPv4 Access Control List (ACLs) on the switch. Use the summary option to display only the name of the lists and the number of lines in each list.

Command Mode

Privileged EXEC

Command Syntax

show ip access-list [LIST][SCOPE]

Parameters
  • LIST Name of lists to be displayed. Selection options include:
    • no parameter All IPv4 ACLs are displayed.
    • list_name Specified IPv4 ACL is displayed.
  • SCOPE Information displayed. Selection options include:
    • no parameter All rules in the specified lists are displayed.
    • summary The number of rules in the specified lists are displayed.
Examples
  • This command displays all rules in test1 IPv4 ACL.
    switch# show ip access-list list2
IP Access List list2
        10 permit ip 10.10.10.0/24 any
        20 permit ip any host 10.20.10.1
        30 deny ip host 10.10.10.1 host 10.20.10.1
switch#
  • This command displays the name of, and number of rules in, each list on the switch.
    switch# show ip access-list summary
IPV4 ACL default-control-plane-acl
        Total rules configured: 12
        Configured on: control-plane
        Active on    : control-plane

IPV4 ACL list2
        Total rules configured: 3

IPV4 ACL test1
        Total rules configured: 6

Standard IPV4 ACL test_1
        Total rules configured: 1

IPV4 ACL test_3
        Total rules configured: 0

switch#
  • This command displays the summary and lists all the configured IPv4 ACLs.
    switch # show ip access-lists summary
IPV4 ACL default-control-plane-acl [readonly]
 Total rules configured: 17
 Configured on Ingress: control-plane(default VRF)
 Active on Ingress: control-plane(default VRF)

IPV4 ACL ipAclLimitTest
 Total rules configured: 0
 Configured on Egress: Vl2148,2700
 Active on Egress: Vl2148,2700

show ip prefix-list

The show ip prefix-list command displays all rules for the specified IPv4 prefix list. The command displays all IPv4 prefix list rules if a prefix list name is not specified.

Command Mode

EXEC

Command Syntax

show ip prefix-list [DISPLAY_ITEMS]

Parameters

DISPLAY_ITEMS Specifies the name of prefix lists for which rules are displayed. Options include:
  • no parameter All IPv4 prefix list rules are displayed.
  • list_name Specifies the IPv4 prefix list for which rules are displayed.

Example

This command displays all rules in the route-one IPv4 prefix list.
switch(config-ip-pfx)# show ip prefix-list
ip prefix-list route-one
    seq 10 deny 10.1.1.0/24
    seq 20 deny 10.1.0.0/16
    seq 30 permit 12.15.4.9/32
    seq 40 deny 1.1.1.0/24
switch(config-ip-pfx)#

show ipv6 access-lists

The show ipv6 access-list command displays the contents of all IPv6 Access Control List (ACLs) on the switch. Use the summary option to display only the name of the lists and the number of lines in each list.

Command Mode

Privileged EXEC

Command Syntax

show ipv6 access-list [LIST][SCOPE]

Parameters
  • LIST Name of lists to be displayed. Selection options include:
    • no parameter All IPv6 ACLs are displayed.
    • list_name Specified IPv6 ACL is displayed.
  • SCOPE Information displayed. Selection options include:
    • no parameter All rules in the specified lists are displayed.
    • summary The number of rules in the specified lists are displayed.
Examples
  • This command displays all rules in test1 IPv6 ACL.
    switch# show ipv6 access-list list2
IP Access List list2
        10 permit ipv6 3891:3c58:6300::/64 any
        20 permit ipv6 any host 2fe1:b468:024a::
        30 deny ipv6 host 3411:91c1:: host 4210:cc23:d2de:::
switch#
  • This command displays the name of, and number of rules in, each list on the switch.
    switch# show ipv6 access-list summary
IPV6 ACL list2
        Total rules configured: 3

IPV6 ACL test1
        Total rules configured: 6

IPV6 ACL test_1
        Total rules configured: 1

Standard IPV6 ACL test_3
        Total rules configured: 0
switch#

show ipv6 prefix-list

The show ipv6 prefix-list command displays all rules for the specified IPv6 prefix list. The command displays all IPv6 prefix lists if a prefix list name is not specified.

Command Mode

EXEC

Command Syntax

show ipv6 prefix-list [DISPLAY_ITEMS]

Parameters

DISPLAY_ITEMS Specifies the name of prefix lists for which rules are displayed. Options include:
  • no parameter All IPv6 prefix lists are displayed.
  • list_name Specifies the IPv6 prefix list for which rules are displayed.
Examples
  • This command displays all rules in the map1 IPv6 prefix list:
    switch> show ipv6 prefix-list map1
ipv6 prefix-list map1
seq 10 permit 3:4e96:8ca1:33cf::/64
seq 15 deny 3:4400::/64
seq 20 permit 3:11b1:8fe4:1aac::/64
seq 30 permit 3:1bca:3ff2:634a::/64
seq 40 permit 3:1bca:1141:ab34::/64
switch>
  • This command displays all prefix lists:
    switch> show ipv6 prefix-list
ipv6 prefix-list map1
seq 10 permit 3:4e96:8ca1:33cf::/64
seq 15 deny 3:4400::/64
seq 20 permit 3:11b1:8fe4:1aac::/64
seq 30 permit 3:1bca:3ff2:634a::/64
seq 40 permit 3:1bca:1141:ab34::/64
ipv6 prefix-list FREDD
ipv6 prefix-list route-five
ipv6 prefix-list map2
seq 10 deny 10:1:1:1::/64 ge 72 le 80
seq 20 deny 10:1::/32
switch>

show mac access-lists

The show mac access-list command displays the contents of all MAC Access Control List (ACLs) on the switch. Use the summary to display only the name of the lists and the number of lines in each list.

Command Mode

Privileged EXEC

Command Syntax

show mac access-lists [LIST][SCOPE]

Parameters
  • LIST Name of lists to be displayed. Selection options include:
    • no parameter Command displays all ACLs.
    • list_name Command displays ACL specified by parameter.
  • SCOPE Information displayed. Selection options include:
    • no parameter Command displays all rules in specified lists.
    • summary Command displays the number of rules in specified lists.
Examples
  • This command displays all rules in mtest2 MAC ACL.
    switch# show mac access-list mlist2
IP Access List mlist2
        10 permit 1024.4510.F125 0.0.0 any aarp
        20 permit any 4100.4500.0000 0.FF.FFFF novell
        30 deny any any
switch#
  • This command displays the number of rules in each MAC ACL on the switch.
    switch# show mac access-list summary
MAC ACL mlist1
        Total rules configured: 6

MAC ACL mlist2
        Total rules configured: 3

MAC ACL mlist3
        Total rules configured: 1

MAC ACL mlist4
        Total rules configured: 0
switch#

show platform arad acl tcam summary

The show platform arad tcam summary command displays the percentage of TCAM utilization per forwarding ASIC.

Command Mode

EXEC

Command Syntax

show platform arad acl tcam summary

Parameter

summary Displays the ACL TCAM summary.

Example

This command displays the percentage of TCAM utilization per forwarding ASIC.
switch# show platform arad acl tcam summary
The total number of TCAM lines per bank is 1024.

========================================================
Arad3/0:
========================================================
 Bank      Used           Used %                 Used By
    1         4                0                IP RACLs
Total Number of TCAM lines used is: 4

========================================================
Arad3/4:
========================================================
 Bank      Used           Used %                 Used By
    1         2                0                IP RACLs
Total Number of TCAM lines used is: 2

show platform arad acl tcam

The show platform arad acl tcam command displays the number of TCAM entries (hardware resources) occupied by the ACL on each forwarding ASIC.

This command is applicable only on DCS-7500E, DCS-7280E series switches.

Command Mode

EXEC

Command Syntax

show platform arad acl tcam [scope]

Parameters

scope Specifies the information displayed. Options include:
  • detail Displays the ACL TCAM details.
  • diff Displays the difference between hardware and shadow.
  • hw Displays the ACL entries from hardware.
  • shadow Displays the ACL entries from shadow.
  • summary Displays the ACL TCAM summary.
Examples
  • This command displays the number of TCAM entries used by Arad0 ASIC. In this example, ACL is applied on twoVLANs (Vl2148 and Vl2700) but number of TCAM entries occupied is only one.
    switch# show platform arad acl tcam detail
ip access-list ipAclLimitTest (Shared RACL, 0 rules, 1 entries, direction out, 
state success, Acl Label 2)
Fap: Arad0, Shared: true, Interfaces: Vl2148, Vl2700
Bank Offset Entries
0         0       1
Fap: Arad1, Shared: true, Interfaces: Vl2148
Bank Offset Entries
0         0       1
  • This command displays the percentage of TCAM utilization per forwarding ASIC.
    switch# show platform arad acl tcam summary
The total number of TCAM lines per bank is 1024.
========================================================
Arad0:
========================================================
 Bank   Used                  Used %             Used By
    0      1                       0   IP Egress PACLs/RACLs
Total Number of TCAM lines used is: 1
========================================================
Arad1:
========================================================
 Bank   Used                   Used %            Used By
    0      1                        0   IP Egress PACLs/RACLs
Total Number of TCAM lines used is: 1

show platform arad mapping

The show platform arad mapping command displays the mapping between the interfaces and the forwarding ASICs.

Command Mode

EXEC

Command Syntax

show platform arad chip_name mapping

Parameter

chip_name Specifies the Arad chip name.

Example

This command displays the mapping between the interfaces and the forwarding ASICs on the Arad3/0 chip.
switch# show platform arad arad3/0 mapping
Arad3/0  Port                      SysPhyPort    Voq   ( Fap,FapPort)    Xlge     Serdes
-------------------------------------------------------------------------------
         Ethernet3/1/1                     34    288        (0  ,  2)     n/a        (20)
...............................................................................

show platform fap acl

The show platform fap acl command displays the ACL information of Sand platform devices.

Command Mode

Privileged EXEC

Command Syntax

show platform fap acl [ipkgv | l4ops | mirroring | opkgv | pmf | tcam | udf | vsicfg]

Parameters
  • ipkgv Displays the ACL Ingress Interface Specification (IPKGV) information.
  • l4ops Displays the ACL Layer 4 Options (L4OPS) information.
  • mirroring Displays the mirroring ACL information.
  • opkgv Displays the ACL Egress Interface Specification (OPKGV) information.
  • pmf Displays the Pmf.
  • tcam Displays the ACL TCAM information.
  • udf Displays the ACL UDF information.
  • vsicfg Displays the ACL Virtual Switch Instance (VSI) CONFIG information.

Guidelines

This command is supported on DCS-7280SE and DCS-7500E series platforms only.

Example

This command displays the brief information of all installed mirroring ACLs.
switch(config)# show platform fap acl mirroring

==============
 Aggregate ACLs
==============

 (list2:0->2) type=2; version=0
  - list2 [ prio 0 ] => session 2

 (list1:10->1,list3:20->3) type=0; version=13
  - list3 [ prio 20 ] => session 3
  - list1 [ prio 10 ] => session 1

======================
 Interface-ACL Mapping
======================

  Ethernet1 => (list1:10->1,list3:20->3) [ ipv4 ]
  Ethernet33 => (list2:0->2) [ mac ]

show platform fap acl tcam

The show platform fap tcam command displays the number of TCAM entries (hardware resources) occupied by the ACL on each forwarding ASIC of Sand platform devices.

Command Mode

Privileged EXEC

Command Syntax

show platform fap acl tcam [detail | diff | hw | shadow | summary]

Parameter
  • detail Displays the number of TCAM entries (hardware resources) occupied by the ACL on each forwarding ASIC.
  • diff Displays the difference between hardware and shadow.
  • hw Displays ACL entries from hardware.
  • shadow Displays ACL entries from shadow.
  • summary Displays the percentage of TCAM utilization per forwarding ASIC.

Example

This command displays the number of TCAM entries and other ACL TCAM detail.
switch# show platform fap acl tcam detail
ip access-list ipAcl0000 (RACL, 1 rules, 2 entries, direction in, state success)
 Shared: false
 Interface: Vlan0002
 -------------------
 Fap: Arad3/0
 Bank Offset Entries
 1         0       2
 Interface: Vlan0003
 -------------------
 Fap: Arad3/0
 Bank Offset Entries
 1         2       2
 Fap: Arad3/4
 Bank Offset Entries
 1         0       2

show platform fap acl tcam hw

The show platform fap acl tcam hw command displays the TCAM entries configured for each TCAM bank including policy-maps and corresponding traffic match.

This command is applicable only on DCS-7280(E/R), DCS-7500(E/R) series switches.

Command Mode

EXEC

Command Syntax

show platform fap fap_name acl tcam hw

Parameters
  • fap_name Specifies the switch chip-set name.
  • acl Specifies the Arad ACL information.
  • tcam Specifies the Arad TCAM information.
  • hw Specifies the ACL entries for hardware.

Example

This command displays the TCAM entries configured for each TCAM bank including policy maps and corresponding traffic matches.
switch# show platform fap Arad1 acl tcam hw 
================================================================================
Arad1 Bank 0 Type: dbPdpIp, dbPdpIp6, dbPdpMpls, dbPdpNonIp, dbPdpTunnel
================================================================================
----------------------------------------------------
|Offs|X|PR|TT|R|QI|V6MC|DPRT|SPRT|F|DEST |V|ACT  |H|
----------------------------------------------------
|29  |4|59|  | |01|    |    |    | |     |3|0008f|0|
|    |4|59|  | |01|    |    |    | |     |0|00000|0|
|30  |4|33|  | |01|    |    |    | |     |3|0008f|0|
|    |4|33|  | |01|    |    |    | |     |0|00000|0|
|31  |4|32|  | |01|    |    |    | |     |3|0008f|0| 
|    |4|32|  | |01|    |    |    | |     |0|00000|0|
|32  |4|  |  | |01|ff02|    |    | |     |3|00097|0|
|    |4|  |  | |01|ff02|    |    | |     |0|00000|0|
|33  |4|06|  | |01|    |    |00b3| |26ffd|3|0009b|0|
|    |4|06|  | |01|    |    |00b3| |26ffd|0|00000|0|
|34  |4|06|  | |01|    |00b3|    | |26ffd|3|0009b|0|
----------------------------------------------
|Offs|X|R|QI|DAHI|PT|DALO    |DEST |V|ACT  |H|
----------------------------------------------
-----------------------------------------------------------------------------
|Offs|X|TT0|QI|FOI|TT1|DEST |TT1P |PT|VX_DP|PN|F|MC|O|V|HDR OFFSETS |ACT  |H|
================================================================================
Arad1 Bank 1 Type: dbIpQos
================================================================================
----------------------------------------------------------------------
|Offs|X|TC|CL|DPRT|SPRT|VQ|L4OPS |PP|PR|F|V4_DIP  |V4_SIP  |V|ACT  |H|
----------------------------------------------------------------------
|0   |0|  |  |    |    |  |      |01|  | |        |        |3|00000|0|
|    |0|  |  |    |    |  |      |01|  | |        |        |0|00000|0|
----------------------------------------------------------------------
<-------OUTPUT OMITTED FROM EXAMPLE-------->

show platform fap acl tcam summary

The show platform fap acl tcam summary command displays for each forwarding ASIC, the number of TCAM entries consumed per ACL type, and in which TCAM bank the entries are installed. A mirroring ACL does not consume TCAM resources unless attached to a mirroring source interface, and a mirroring destination is configured. If the mirroring destination is a GRE tunnel, at least one nexthop entry for the tunnel destination must be resolved before a TCAM entry is installed.

Command Mode

EXEC

Command Syntax

show platform fap acl tcam summary

Example

This command displays the number of TCAM entries consumed per ACL type, the bank installed, and ASIC. Three TCAM entries are consumed across two forwarding ASICs, two for IP ACLs, and one for MAC ACLs.
switch# show platform fap acl tcam summary
========================================================
 Arad0:
========================================================
    Bank   Used Used %    Used By
    0, 1      2      0    IP Mirroring
 Total Number of TCAM lines used is: 4
========================================================
 Arad1:
========================================================
   Bank   Used            Used %                 Used By
      2      1                 0           Mac Mirroring

show platform trident tcam

The show platform trident tcam command displays the TCAM entries configured for each TCAM group including policy maps and corresponding hits.

Command Mode

EXEC

Command Syntax

show platform trident tcam [acl | cpu-bound | detail | directed-broadcast | entry | mirror | pbr | pipe | qos | shared | summary]

Parameters
  • no parameters Displays TCAM entries for each TCAM group.
  • acl Displays the trident ACL information.
  • cpu-bound Displays the trident cpu-bound information.
  • detail Lists all TCAM entries.
  • directed-broadcast Allows inbound broadcast IP packets with Source IP address as one of the permitted broadcast host.
  • entry Displays the TCAM entry information.
  • mirror Displays the trident Mirroring ACL information.
  • pbr Displays the trident PBR ACL information.
  • pipe Allows to specify a pipe for filtering.
  • qos Displays the trident QOS information.
  • shared Displays the ACL Sharing information.
  • summary Displays the TCAM allocation information.

Guidelines

This command is applicable only on DCS-7010, DCS-7050/DCS-7050X, DCS7250X, DCS-7300X series switches.

Examples
  • This command displays the Trident mirroring ACL information.
    switch(config)# show platform trident tcam mirror
=== Mirroring ACLs on switch Linecard0/0 ===

Session: mir-sess2

INGRESS ACL mirAcl2* uses 2 entries
 Assigned to ports: Ethernet32/1
  • This command displays the allowed IP Destination address from the in coming packets
    switch# show platform trident tcam directed-broadcast
DirectedBroadcast Feature Tuples.
Src Ip          Dst Ip          Action          Hits
--------------- --------------- ------- ------------
10.1.1.1        192.164.2.15    Permit             0
20.1.1.1        192.164.2.15    Permit             0
30.1.1.1        192.164.2.15    Permit             0
10.1.1.1        192.166.2.15    Permit             0
20.1.1.1        192.166.2.15    Permit             0
30.1.1.1        192.166.2.15    Permit             0
10.1.1.1        192.168.2.255   Permit             0
20.1.1.1        192.168.2.255   Permit             0
30.1.1.1        192.168.2.255   Permit             0
*               192.164.2.15    Deny               0
*               192.166.2.15    Deny               0
*               192.168.2.255   Deny               0
    .
  • This command displays detailed information for the TCAM group.
    switch# show platform trident tcam detail
=== TCAM detail for switch Linecard0/0 ===
TCAM group 9 uses 42 entries and can use up to 1238 more.
 mlag control traffic uses 4 entries.
    589826                0 hits - mlag - SrcPort UDP Entry
    589827                0 hits - mlag - DstPort UDP Entry
    589828                0 hits - mlag - SrcPort TCP Entry
    589829                0 hits - mlag - DstPort TCP Entry
 CVX traffic reserves 6 entries (0 used).
 L3 Control Priority uses 23 entries.
    589836                0 hits - URM - SelfIp UDP Entry
    589837                0 hits - URM - SelfIp TCP Entry
589848                0 hits - OSPF - unicast
    589849            71196 hits - OSPFv2 - Multicast
    589850                0 hits - OSPFv3 - Multicast
    589851                0 hits - OSPF Auth ESP - Multicast
    589852                0 hits - OSPF Auth ESP - Unicast
    589853                0 hits - IP packets with GRE type and ISIS protocol
    589854                0 hits - RouterL3 Vlan Priority 6,7 Elevator
    589855                0 hits - RouterL3 DSCP 48-63 Elevator
    589856                0 hits - RouterL3 Priority Elevator
    589857                0 hits - NextHopToCpu, Glean
    589858                0 hits - L3MC Cpu OIF
 IGMP Snooping Flooding reserves 8 entries (6 used).
589864                0 hits - IGMP Snooping Restricted Flooding L3 from local 
mlag peer
    589865                0 hits - IGMP Snooping Restricted Flooding L3
 L4 MicroBfd traffic reserves 1 entries (0 used).
TCAM group 13 uses 99 entries and can use up to 1181 more.
 Dot1x MAB traffic uses 1 entries.
    851968                0 hits - Dot1xMab Rule

<-------OUTPUT OMITTED FROM EXAMPLE-------->

ck338.22:14:38(config-pmap-qos-policy1)#

show route-map

The show route-map command displays the contents of configured route maps.

Command Mode

EXEC

Command Syntax

show route-map [map_name]

Parameters
  • no parameter Displays the content of all configured route maps.
  • map_name Displays the content of the specified route map.
Examples
  • This command displays the map1 route map.
    switch(config)# show route-map map1
route-map map1 permit 10
  Description:
  Match clauses:
  SubRouteMap:
  Set clauses:
    set as-path prepend last-as 12
    set as-path prepend auto auto
  • This command displays the map route map.
    switch> show route-map map
route-map map permit 5
  Match clauses:
    match as 456
Set clauses:
route-map map permit 10
  Match clauses:
match ip next-hop 2.3.4.5
    match as-path path_2
  Set clauses:
    set local-preference 100

system profile

The system profile command creates a new Ternary Content-Addressable Memory (TCAM) profile in the running configuration.

The default system profile and no system profile commands delete non-default TCAM profiles from the running configuration.

Command Mode

Hardware TCAM

Command Syntax

system profile [profile_name| default | mirroring-acl | pbr-match-nexthop-group | qos | tap-aggregation-default | tap-aggregation-extended | tc-counters]

default system profile

no system profile

Parameters
  • profile_name Creates a profile with the specified name.
  • default Creates a default profile.
  • mirroring-acl Creates a mirroring-ACL profile.
  • pbr-match-nexthop-group Creates a pbr-match-nexthop-group profile.
  • qos Creates a Quality of Service (QoS) profile.
  • tap-aggregation-default Creates a tap-aggregation-default profile.
  • tap-aggregation-extended Creates a tap-aggregation-extended profile.
  • tc-counters Creates a tc-counters profile.

Guideline

These commands are compatible with the DCS-7280SE and DCS-7500E series switches only.

Examples
  • These commands create a mirroring-ACL profile. 
    switch(config)# hardware tcam
switch(config-hw-tcam)# system profile mirroring-acl
switch(config-hw-tcam)# show hardware tcam profile
                     Configuration        Status
FixedSystem          mirroring-acl        mirroring-acl
switch(config-hw-tcam)#
  • These commands delete non-default TCAM profiles. 
    switch(config)# hardware tcam
switch(config-hw-tcam)#show hardware tcam profile
                     Configuration        Status
Linecard9            mirroring-acl        mirroring-acl
Linecard8            mirroring-acl        mirroring-acl
Linecard3            mirroring-acl        mirroring-acl
Linecard4            mirroring-acl        mirroring-acl
Linecard6            mirroring-acl        mirroring-acl
switch(config-hw-tcam)# default system profile
switch(config-hw-tcam)# show hardware tcam profile
                     Configuration        Status
Linecard9            default              default
Linecard8            default              default
Linecard3            default              default
Linecard4            default              default
Linecard6            default              default
switch(config-hw-tcam)#
  • These commands delete TCAM profiles. 
    switch(config-hw-tcam)# show hardware tcam profile
                     Configuration        Status
Linecard9            tc-counters          tc-counters
Linecard8            tc-counters          tc-counters
Linecard3            tc-counters          tc-counters
Linecard4            tc-counters          tc-counters
Linecard6            tc-counters          tc-counters
switch(config-hw-tcam)# no system profile
switch(config-hw-tcam)# show hardware tcam profile
                     Configuration        Status
Linecard9            default              default
Linecard8            default              default
Linecard3            default              default
Linecard4            default              default
Linecard6            default              default
switch(config-hw-tcam)#