VXLAN Commands
VXLAN Global Configuration Commands
VXLAN Interface Configuration Commands
VXLAN Bridging and Routing Commands
VXLAN Display and Clear Commands
clear vxlan counters
The clear vxlan counters command resets the VXLAN counters.
Command Mode
Privileged EXEC
Command Syntax
clear vxlan counters ROUTE_TYPE
Parameters
- software Command resets software counters.
- varp Command resets virtual-ARP counters.
Related Command
show vxlan counters displays the VXLAN counters.
Example
This command resets the VXLAN counters
switch# clear vxlan counters software
switch# show vxlan counters software
encap_bytes:0
encap_pkts:0
encap_read_err:0
encap_discard_runt:0
encap_discard_vlan_range:0
encap_discard_vlan_map:0
encap_send_err:0
encap_timeout:0
decap_bytes_total:0
decap_pkts_total:0
decap_bytes:0
decap_pkts:0
decap_runt:0
decap_pkt_filter:0
decap_bytes_filter:0
decap_discard_vxhdr:0
decap_discard_vlan_map:0
decap_timeout:0
decap_sock_err:0
switch#
designated-forwarder election hold-time
The optional designated-forwarder election hold-time command can configure a wait time before selecting the designated forwarder and allow potential forwarders a chance to advertise their EVPN Ethernet segment (type 4) routes. The no and default forms of the command removes the election hold time.
Command Mode
EVPN Ethernet segment identifier configuration mode
Command Syntax
designated-forwarder election hold-time sec
no designated-forwarder election hold-time sec
default designated-forwarder election hold-time sec
Parameter
sec Number of seconds for the timer waiting to receive updates from other PE. Range 0-1800.
switch(config)# interface Ethernet1
switch(config-if-Et1)# evpn ethernet-segment
switch(config-evpn-es)# designated-forwarder election hold-time 20
interface vxlan
The interface vxlan command places the switch in vxlan-interface configuration mode for modifying the specified VXLAN Tunnel Interface (VTI). The command also instantiates the interface if it was not previously created.
VXLAN interface configuration mode is not a group change mode; running-config is changed immediately after commands are executed. The exit command does not affect the configuration.
The no interface vxlan deletes the specified VTI interface, including its configuration statements, from running-config. The default interface vxlan command removes all configuration statements for the specified VTI from running-config without deleting the interfaces.
Command Mode
Global Configuration
Command Syntax
interface vxlan vx_range
no interface vxlan vx_range
default interface vxlan vx_range
Parameter
vx_range VXLAN interface number. The only permitted value is 1.
Commands Available in link-flap Configuration Mode
- These commands create interface vxlan 1, place the
switch in vxlan-interface configuration mode, then display
parameters of the new
VTI.
switch(config)# interface vxlan 1 switch(config-if-Vx1)# show active interface Vxlan1 vxlan udp-port 4789 switch(config-if-Vx1)#
- This command exits vxlan-interface configuration mode, placing
the switch in global configuration
mode.
switch(config-if-Vx1)# exit switch(config)#
ip address virtual
The ip address virtual command configures a specified address as the primary IPv4 address and as a virtual IP address for the configuration mode VLAN interface. The address resolves to the virtual MAC address configured through the ip virtual-router mac-address command. The command includes a subnet designation that is required in primary IP address assignments.
This command is typically used in VXLAN routing configurations as an alternative to assigning a unique IP address to each VTEP. All existing IPv4 addresses must be removed from the interface before executing this command.
The no ip address virtual and default ip address virtual commands remove the IPv4 address and virtual IP assignment from the configuration mode interface by deleting the ip address virtual command from running-config.
Removing the IPv4 address assignments from an interface disables IPv4 processing on that port.
Command Mode
Interface-VLAN Configuration
Command Syntax
ip address virtual ipv4_subnet | secondary
no ip address virtual
default ip address virtual
Parameters
- ipv4_subnet IPv4 and subnet address (CIDR or address-mask notation).
- secondary Configures a secondary address on the loopback interface designated as the VXLAN’s source interface.
- ip address
- ip virtual-router mac-address
Examples
-
This command configures 10.10.10.1 as the IPv4 address and virtual address for vlan 100.
switch(config-if-Vl100)# show active interface Vlan100 ip address virtual 10.10.10.1/28 switch(config-if-Vl100)#
- These commands configure 10.1.1.1 as the primary
address and 10.2.2.2 as the virtual VTEP
address.
switch1 switch(config)# interface loopback 5 switch(config-if-Lo5)# ip address 10.1.1.1/24 switch(config-if-Lo5)# ip address 10.2.2.2/24 secondary switch(config-if-Lo5)# show active interface Loopback5 ip address 10.1.1.1/24 ip address 10.2.2.2/24 secondary switch(config-if-Lo5)# exit switch(config)# interface vxlan 1 switch(config-if-Vx1)# vxlan source-interface loopback 5 switch(config-if-Vx1)# show active interface Vxlan1 vxlan source-interface Loopback5 vxlan udp-port 4789 vxlan vlan 100 vni 10000 switch(config-if-Vx1)# switch2 switch(config)# interface vxlan1 switch(config-if-Vx1)# vxlan flood vtep 10.1.1.1 switch(config-if-Vx1)# vxlan flood vtep 10.2.2.2
redistribute attached-host
Use the redistribute attached-host to redistribute the source routes in the MRIB via BGP while running multi-agent protocol model for the IPv4 multicast address-family. Thius activates the neighbor to establish a BGP connection.
Command Mode
BGP router address-family configuration mode
Command Syntax
redistribute attached-host route-map name
no redistribute attached-host route-map name
default redistribute attached-host route-map name
Parameter
route-map name Name of the route map.
Example
switch(config-router-bgp)# address-family ipv4 multicast
switch(config-router-bgp-af)# neighbor 3.0.0.2 activate
switch(config-router-bgp-af)# redistribute attached-host
show arp
Use the show arp command to display and modify entries in the Address Resolution Protocol (ARP) cache.
Command Mode
EXEC
Command Syntax
show arp [agent [ipv4 | ipv6] | host name | A.B.C.D [host | interface | mac-address | summary] | interface [Ethernet | Fabric | Loopback | Management | Port-Channel | Switch | Tunnel | Vlan | VXLAN] | mac-address H.H.H | monitor [summary | vrf] | remote vlan | resolve [host | interface | mac-address | A.B.C.D] | summary total | vrf [word | all]]
- agentARP Agent information.
- ipv4Details related to IPv4.
- ipv6 Details related to IPv6.
- host nameHostname filter name.
- A.B.C.DIP address filter.
- hostHostname filter.
- interfaceInterface selector.
- mac-addressMAC address filter.
- summary Displays a summary of ARP entries.
- interfaceInterface selector.
- EthernetEthernet interface.
- FabricFabric interface.
- LoopbackHardware interface used in looping packets.
- ManagementManagement interface.
- Port-ChannelPort-Channel sub interface.
- SwitchSwitch interface.
- TunnelTunnel interface.
- VlanLogical interface into a VLAN.
- VXLAN VXLAN tunnel interface.
- mac-address H.H.H MAC address filter Ethernet address.
- monitorMonitored IP/IPv6 addresses.
- summary Displays a summary of monitored IP/IPv6 addresses.
- vrf Displays monitored IP/IPv6 addresses in a VRF.
- remote vlan Remote host bindings displaying information about the specified VLAN.
- resolveResolves host names.
- hostHostname filter.
- interfaceInterface selector.
- mac-address MAC address filter.
- A.B.C.D IP address filter.
- summaryDisplays a summary of the ARP entries.
- total Displays a count of the total ARP entries.
- vrfDisplays ARP entries in a VRF.
- wordThe VRF name.
- all All virtual routing and forwarding instances.
-
The show interfaces VXLAN command displays operational status and configuration information of the specified VXLAN.
switch(config)# show interfaces VXLAN 1 VXLAN1 is up, line protocol is up (connected) Hardware is VXLAN Source interface is Loopback0 and is active with 172.16.1.1 Replication/Flood Mode is headend with Flood List Source: CLI Remote MAC learning via Datapath VNI mapping to VLANs Static VLAN to VNI mapping is [100, 100] Note: All Dynamic VLANs used by VCS are internal VLANs. Use 'show VXLAN vni' for details. Static VRF to VNI mapping is not configured Headend replication flood vtep list is: 100 172.16.1.2 10.1.1.1 MLAG Shared Router MAC is 0000.0000.0000 VTEP address mask is Non
-
The show arp command displays all ARP tables on the configured VXLAN.
switch(config)# show arp interface VXLAN 1 Address Age (sec) Hardware Addr Interface 192.168.10.1 - 0000.abab.abab Vlan100, VXLAN1
-
The show arp interface summary command displays a summary of all ARP tables on the configured VXLAN.
switch(config)# show arp interface VXLAN 1 summary Total: 1 Static: 1 Dynamic: 0 Not learned: 0
show interfaces VXLAN
Use the show interfaces VXLAN command to display the operational status and configuration information of the specified VXLAN.
Command Mode
EXEC
Command Syntax
show interfaces VXLAN num
Parameter
num VXLAN tunnel interface number. Range 1-1.
switch(config)# show interfaces VXLAN 1
VXLAN1 is up, line protocol is up (connected)
Hardware is VXLAN
Source interface is Loopback0 and is active with 172.16.1.1
Replication/Flood Mode is headend with Flood List Source: CLI
Remote MAC learning via Datapath
VNI mapping to VLANs
Static VLAN to VNI mapping is
[100, 100]
Note: All Dynamic VLANs used by VCS are internal VLANs.
Use 'show VXLAN vni' for details.
Static VRF to VNI mapping is not configured
Headend replication flood vtep list is:
100 172.16.1.2 10.1.1.1
MLAG Shared Router MAC is 0000.0000.0000
VTEP address mask is Non
show service vxlan
The show service vxlan command displays the status of the VXLAN Control Service (VCS) and the received (from all connected VTEPs) and advertised (to all connected VTEPs) MAC address reachability information.
Command Mode
EXEC
Command Syntax
show service vxlan [status | switch [SWITCH_TYPE] | vni [VNI_INFO]]
- SWITCH_TYPE displayed by switch type. Options
include:
- word hostname, IP address, or ID of the switch.
- all all switches.
- VNI_INFO displayed with VNI information. Options
include:
- advertised advertised MAC addresses.
- received received MAC addresses.
Example
switch(config)# show service vxlan status
Vxlan Controller Service is : stopped
Mac learning : Control plane
Resync period : 300 seconds
Resync in progress : No
Capability : VXLAN v4 overlay routing
VXLAN v4 overlay indirect routing
fm319(config-if-Vx1)#show service vxlan status
Vxlan Controller Service is : stopped
Mac learning : Control plane
Resync period : 300 seconds
Resync in progress : No
Capability : VXLAN v4 overlay routing
VXLAN v4 overlay indirect routing
switch(config)#
show vxlan address-table
The show vxlan address-table command displays the vxlan address table. Entries are created by extracting information from packets received from remote VTEPs.
The VXLAN address table correlates MAC addresses that are accessible through remote VTEPs with the local VLAN and the IP address of the VTP through which the addressed device is accessible. The VTI uses this table when constructing the VXLAN encapsulation fields to specify the destination IP address of the recipient VTEP and the VNI segment through which the device’s remote VLAN is accessed.
Command Mode
EXEC
Command Syntax
show vxlan address-table [ENTRY_TYPE] [MAC_ADDR] [VLANS] [REMOTE_VTEP]
- ENTRY_TYPE command filters display by entry type.
Options include:
- no parameter all table entries.
- configured static entries; includes unconfigured VLAN entries.
- dynamic entries learned though packet receipts.
- static entries entered by CLI commands.
- unicast entries with unicast MAC address.
- MAC_ADDR command uses MAC address to filter displayed
entries.
- no parameter all MAC addresses table entries.
- address mac_address displays entries with specified address (dotted hex notation – H.H.H).
- VLANS command filters display by VLAN.
- no parameter all VLANs.
- vlan v_num VLAN specified by v_num.
- REMOTE_VTEP Filters entries by IP address of the remote
VTEPs. Options include:
- no parameter all items.
- vtep ipaddr_1 [ipaddr_2...ipaddr_n] Identifies VTEPs by their IP address.
Example
This command displays the VXLAN address table.
switch> show vxlan address-table
Vxlan Mac Address Table
----------------------------------------------------------------------
Vlan Mac Address Type Prt Vtep Moves Last Move
---- ----------- ---- --- ---- ----- ---------
51 0000.0051.0101 DYNAMIC Vx1 10.25.2.12 1 4 days, 0:37:14 ago
51 0000.0051.0102 DYNAMIC Vx1 10.25.2.12 1 4 days, 0:37:14 ago
51 0000.0051.0103 DYNAMIC Vx1 10.25.2.12 1 4 days, 0:37:14 ago
51 0000.0051.0104 DYNAMIC Vx1 10.25.2.12 1 4 days, 0:37:14 ago
51 0000.0051.0105 DYNAMIC Vx1 10.25.2.12 1 4 days, 0:37:14 ago
61 0000.0061.0102 DYNAMIC Vx1 10.25.2.12 1 4 days, 0:37:14 ago
61 0000.0061.0103 DYNAMIC Vx1 10.25.2.12 1 4 days, 0:37:14 ago
61 0000.0061.0104 DYNAMIC Vx1 10.25.2.12 1 4 days, 0:37:14 ago
61 0000.0061.0105 DYNAMIC Vx1 10.25.2.12 1 4 days, 0:37:14 ago
switch>
show vxlan counters
The show vxlan counters command displays the VXLAN counters.
Command Mode
EXEC
Command Syntax
show vxlan counters ROUTE_TYPE
Parameters- ROUTE_TYPE Specifies the type of VXLAN counter
displayed by the command.
- software Command displays software routers.
- varp Command displays virtual-ARP counters.
- vtep Command displays counters for VTEPs which are
identified by their IP address. An optional keyword allows the user to view a
single direction of the counters:
- encap “encap” counters count packets coming from the edge, encapsulated on the device and directed to the core.
- decap “decap” counters count packets coming from the core, decapsulated on the device and heading towards the edge.
Related Command
clear vxlan counters resets the VXLAN counters.
- This command displays the VXLAN counters for software
routers.
switch> show vxlan counters software encap_bytes:3452284 encap_pkts:27841 encap_read_err:1 encap_discard_runt:0 encap_discard_vlan_range:0 encap_discard_vlan_map:0 encap_send_err:0 encap_timeout:1427 decap_bytes_total:382412426 decap_pkts_total:2259858 decap_bytes:0 decap_pkts:0 decap_runt:0 decap_pkt_filter:45128 decap_bytes_filter:5908326 decap_discard_vxhdr:0 decap_discard_vlan_map:2214730 decap_timeout:0 decap_sock_err:1 switch>
- This command displays the VXLAN counters for
VTEPs.
switch> show vxlan counters vtep Decap Drop or Decap Known Decap BUM Exception VTEP Decap Bytes Unicast Packets Packets Packets -------- --------------- -------------------- -------------------- ------------- 1.0.14.1 62526968000 312632701 312636979 2 1.0.16.1 800 2 6 312279633 1.0.23.1 800 2 6 2 unlearnt 0 0 0 0 Encap Drop or Exception VTEP Encap Bytes Encap Packets Packets -------- --------------- -------------------- ------------- 1.0.14.1 30579308814 268239551 2 1.0.16.1 1140 10 2 1.0.23.1 0 0 0 switch>
show vxlan flood vtep
The show vxlan flood vtep command displays the flood list that the switch is using to perform head-end replication. Head-end replication is a data distribution method that supports Broadcast, Unknown unicast, and Multicast (BUM) traffic over VXLANs by replicating BUM data locally for transmission to the set of remote VTEPs that a flood list specifies. The command displays the VLAN ID that references the configured VNIs (vxlan vlan vni ).
The flood list is determined by the vxlan flood vtep command.
Command Mode
EXEC
Command Syntax
show vxlan flood vtep [VLANS]
Parameters
- no parameter all VLANs.
- vlan
v_range VLANs specified by
v_range.
Valid v_range formats include number, range, or comma-delimited list of numbers and ranges.
Guidelines
The command displays flood list contents only when the VLAN line protocol status is up.
Related Command
vxlan flood vtep configures the flood list.
Example
These commands display the VTEPs that have exchanged data with the configured VTI.
switch> show vxlan flood vtep vlan 100-102
Vxlan Flood Vtep Table
--------------------------------------------------------
Vlan Ip Address
---- -------------------------------------------------
100 3.3.3.3
101 11.1.1.1 11.1.1.2 11.1.1.3
102 11.1.1.1 11.1.1.2 11.1.1.3
12.1.1.1
switch>
show vxlan vtep
The show vxlan vtep command displays information about remote VTEPs that the configured VTI has discovered and with whom it has exchanged packets.
Command Mode
EXEC
Command Syntax
show vxlan vtep
Example
These commands display the VTEPs that have exchanged data with the configured VTI.
switch> show vxlan vtep
Remote vteps for Vxlan1:
10.52.2.12
Total number of remote vteps: 1
switch>
vxlan flood vtep
The vxlan flood vtep command supports VXLAN head-end replication by creating or modifying a list that specifies remote VTEPs to which the switch bridges replicated traffic. Head-end replication is a data distribution method that supports Broadcast, Unknown unicast, and Multicast (BUM) traffic over VXLANs by replicating BUM data locally for transmission to the set of remote VTEPs that a flood list specifies. This data flooding facilitates remote MAC address learning through the forwarding of data with unknown MACs.
- vxlan flood vtep creates a statement for a specified VNI and replaces existing statements for that VNI.
- vxlan flood vtep add modifies an existing flood statement by adding the specified VTEPs. This statement creates a list if it references a VNI that has no flood statement.
- vxlan flood vtep remove modifies an existing flood statement by deleting the specified VTEPs. This statement has no effect if it references a VNI that has no flood statement.
- a single VLAN: creates or modifies a single statement referenced by the command.
- a range of VLANs: creates or modifies all statements referenced by the VLAN range.
- no VLAN: creates or modifies the default list.
The no vxlan flood vtep and default vxlan flood vtep commands remove the specified flood list by deleting the corresponding vxlan flood vtep statements from running-config. Commands that specify a VLAN range remove all corresponding statements.
Command Mode
Interface-VXLAN Configuration
Command Syntax
vxlan [ ACCESS_VNI] flood vtep] MODIFY] VTEP_1 [VTEP_2]...[VTEP_N]
no vxlan [ACCESS_VNI] flood vtep
default vxlan [ACCESS_VNI] flood vtep
- ACCESS_VNI VLAN ID associated to the flood
list’s target VNI. Value ranges from 1 to
4094.
- no parameter default list.
- vlan vlan_range List of VLANs. (Number, range, comma-delimited list of numbers and ranges). Numbers range from 1 to 4094.
- MODIFY Statement modification method. Options
include:
- no parameter creates new list for specified VLANs. Current list is overwritten.
- add specified VTEPs are added to existing list.
- remove specified VTEPs are deleted from existing list.
- VTEP_X IPv4 address of VTEPs that are added or removed from the list.
- These commands create a default VXLAN head-end replication flood
list.
switch(config)# interface vxlan 1 switch(config-if-Vx1)# vxlan flood vtep 10.1.1.1 10.1.1.2 switch(config-if-Vx1)# show active interface Vxlan1 vxlan flood vtep 10.1.1.1 10.1.1.2 vxlan udp-port 4789 switch(config-if-Vx1)#
- These commands create VXLAN head-end replication flood lists for the VNIs
accessed through vlan101 and vlan
102.
switch(config-if-Vx1)# vxlan vlan 101-102 flood vtep 11.1.1.1 11.1.1.2 11.1.1.3 switch(config-if-Vx1)# show active interface Vxlan1 vxlan flood vtep 10.1.1.1 10.1.1.2 vxlan vlan 101 flood vtep 11.1.1.1 11.1.1.2 11.1.1.3 vxlan vlan 102 flood vtep 11.1.1.1 11.1.1.2 11.1.1.3 vxlan udp-port 4789 switch(config-if-Vx1)#
- These commands add two VTEPs for the VNI access through vlan
102.
switch(config-if-Vx1)# vxlan vlan 102 flood vtep add 12.1.1.1 switch(config-if-Vx1)# show active interface Vxlan1 vxlan flood vtep 10.1.1.1 10.1.1.2 vxlan vlan 101 flood vtep 11.1.1.1 11.1.1.2 11.1.1.3 vxlan vlan 102 flood vtep 11.1.1.1 11.1.1.2 11.1.1.3 12.1.1.1 vxlan udp-port 4789 switch(config-if-Vx1)#
vxlan multicast-group decap
The vxlan multicast-group decap command enables VXLAN multicast decapsulation.
VTEPs are enabled by VXLAN multicast decapsulation, supporting Head End Replication (HER). Multicast encapsulated Broadcast/Unknown/Multicast (BUM) packets terminate VTEPs from remote VTEPs that do not support HER.
The no vxlan multicast-group decap and default vxlan multicast-group decap commands disable VXLAN multicast decapsulation.
Command Mode
Interface-VXLAN Configuration
Command Syntax
vxlan multicast-group decap group_addr
no vxlan multicast-group decap
default vxlan multicast-group decap
Parameter
group_addr IPv4 address of multicast group. Dotted decimal notation of a valid multicast address.
- This command enables VXLAN multicast
decapsulation.
switch(config)# interface vxlan 1 switch(config-config-if-Vx1)# vxlan multicast-group decap 230.1.1.1 switch(config-config-if-Vx1)#
- This command disables VXLAN multicast
decapsulation.
switch(config)# interface vxlan 1 switch(config-config-if-Vx1)# no vxlan multicast-group decap 230.1.1.1 switch(config-config-if-Vx1)#
vxlan source-interface
The vxlan source-interface command specifies the interface from which the configuration mode VXLAN Interface (VTI) derives the source address (IP) that it uses when exchanging VXLAN frames. There is no default source interface assignment.
The no vxlan source-interface and default vxlan source-interface commands remove the source interface assignment from the interface-vxlan configuration mode by deleting the corresponding ip vxlan source-interface command from running-config.
Command Mode
Interface-VXLAN Configuration
Command Syntax
vxlan source-interface INT_NAME
no vxlan source-interface
default vxlan source-interface
Parameters
- loopback l_num Loopback interface specified by l_num.
Guidelines
A VXLAN interface is inoperable without the source-interface assignment.
Related Command
interface vxlan places the switch in VXLAN interface configuration mode.
Example
These commands configure VTI 1 to use the IP address 10.25.25.3 as the source address of outbound VXLAN frames.
switch(config)# interface loopback 15
switch(config-if-Lo15)# ip address 10.25.25.3/24
switch(config-if-Lo15)# exit
switch(config)# interface vxlan 1
switch(config-if-Vx1)# vxlan source-interface loopback 15
switch(config-if-Vx1)# show active
interface Vxlan1
vxlan source-interface Loopback15
vxlan udp-port 4789
switch(config-if-Vx1)#
vxlan udp-port
The vxlan udp-port command associates a UDP port with the configuration mode VXLAN Interface (VTI). By default, UDP port 4789 is associated with the VTI.
Packets bridged to the VTI from a VLAN are encapsulated with a VXLAN header that includes the VNI associated with the VLAN and the IP address of the VTEP that connects to the recipient, then sent through the UDP port. Packets that arrive through the UDP port are sent to the bridging domain of the recipient VLAN as determined by the VNI number in the VXLAN header and the interface’s VNI-VLAN map.
The no vxlan udp-port and default vxlan udp-port command restores the default UDP port association (4789) on the configuration mode interface by deleting the corresponding vxlan udp-port command from running-config.
Command Mode
Interface-VXLAN Configuration
Command Syntax
vxlan udp-port port_id
no vxlan udp-port
default vxlan udp-port
Parameter
port_id UDP port number. Value ranges from 1024 to 65535.
Guidelines
UDP port 4789 is reserved by convention for VXLAN usage. Under most typical applications, this parameter should be set to the default value.
Related Commands
interface vxlan places the switch in interface-vxlan configuration mode.
- This command associates UDP port 5500 with
interface vxlan
1.
switch(config)# interface vxlan 1 switch(config-if-Vx1)# vxlan udp-port 5500 switch(config-if-Vx1)# show active interface Vxlan1 vxlan udp-port 5500 switch(config-if-Vx1)#
- This command resets the interface vxlan 1 UDP port
association of
4789.
switch(config-if-Vx1)# no vxlan udp-port switch(config-if-Vx1)# show active interface Vxlan1 vxlan udp-port 4789 switch(config-if-Vx1)#
vxlan vlan vni
The vxlan vlan vni command associates a VLAN ID with a virtual network identifier (VNI). A VNI is a 24-bit number that is assigned to a VLAN to distinguish it from other VLANs that are on a VXLAN Tunnel Interface (VTI). VNI values range from 1 to 16777215 in decimal notation and from 0.0.1 to 255.255.255 in dotted decimal notation.
When a VLAN bridges a packet to the VTI, the packet is encapsulated with a VXLAN header that includes the VNI that is associated with the VLAN. Packets that arrive on the VTI’s UDP socket are bridged to the VLAN that is associated with the VNI specified by the VXLAN header that encapsulates the packet.
The VTI requires a one-to-one correspondence between specified VLANs and VNI values. Commands that assign a new VNI to a previously configured VLAN replace the existing VLAN assignment statement in running-config. Commands that attempt to assign a VNI value to a second VLAN generate a CLI error.
The no vxlan vlan vni and default vxlan vlan vni commands remove the specified VLAN-VNI association from the configuration mode interface by deleting the corresponding vxlan vlan command from running-config.
Command Mode
Interface-VXLAN Configuration
Command Syntax
vxlan vlan vlan_id vni [vni_id ]
no vxlan vlan vlan_id vni [vni_id]
default vxlan vlan vlan_id vni [vni_id]
- vlan_id number of access VLAN. Value ranges from 1 to 4094.
- vni_id VNI number. Valid formats: decimal 1 to 16777215 or dotted decimal 0.0.1 to 255.255.255.
Example
switch(config)# interface vxlan 1
switch(config-if-Vx1)# vxlan vlan 100 vni 100
switch(config-if-Vx1)# vxlan vlan 200 vni 10.10.200
switch(config-if-Vx1)# show active
interface Vxlan1
vxlan udp-port 4789
vxlan vlan 200 vni 658120
vxlan vlan 100 vni 100
switch(config-if-Vx1)# vxlan vni notation dotted
switch(config-if-Vx1)# show active
interface Vxlan1
vxlan udp-port 4789
vxlan vlan 200 vni 10.10.200
vxlan vlan 100 vni 0.0.100
switch(config-if-Vx1)#
vxlan vni notation dotted
The vxlan vni notation dotted command configures the switch to display VNIs in dotted decimal notation. A Virtual Network Identifier (VNI) is a 24-bit number that is assigned to a VLAN to distinguish it from other VLANs that are on a VXLAN tunnel interface. VNI values range from 1 to 16777215 in decimal notation and from 0.0.1 to 255.255.255 in dotted decimal notation.
The command affects the VNI number display in all show commands, including show running-config. Commands that include VNI as a parameter may use decimal or dotted decimal notion regardless of the setting of this command. By default, show commands display VNI number in decimal notation.
The no vxlan vni notation dotted and default vxlan vni notation dotted commands restore the default setting of displaying vni numbers in decimal notation by deleting the vxlan vni notation dotted command from running-config.
Command Mode
Global Configuration
Command Syntax
vxlan vni notation dotted
no vxlan vni notation dotted
default vxlan vni notation dotted
Examples- These commands configure the switch to display VNI numbers in
dotted decimal notation, then displays a configuration that
includes a VNI
setting.
switch(config)# vxlan vni notation dotted switch(config)# interface vxlan 1 switch(config-if-Vx1)# show active interface Vxlan1 vxlan udp-port 4789 vxlan vlan 333 vni 3.4.5 switch(config-if-Vx1)#
- These commands configure the switch to display VNI numbers in
decimal notation, then displays a configuration that
includes a VNI
setting.
switch(config)# no vxlan vni notation dotted switch(config)# interface vxlan 1 switch(config-if-Vx1)# show active interface Vxlan1 vxlan udp-port 4789 vxlan vlan 333 vni 197637 switch(config-if-Vx1)#