- Written by Gokul Unnikrishnan
- Posted on June 29, 2023
- Updated on July 3, 2023
- 3557 Views
The pre-existing "show sflow" command has a "Number of datagrams" field that indicates the total number of datagrams sent to all sFlow collectors. This feature will add finer granularity by allowing users of software sFlow to view the number of datagrams sent to each sFlow collector.
- Written by Gokul Unnikrishnan
- Posted on June 29, 2023
- Updated on July 3, 2023
- 3217 Views
The pre-existing "show sflow" command has a "Number of samples" field that indicates the total number packets sampled across all sFlow enabled interfaces. This feature will add finer granularity by allowing users of software sFlow to view the number of packets sampled at each sFlow enabled interface in the ingress and egress directions.
- Written by Charlotte Fedderly
- Posted on August 25, 2020
- Updated on February 21, 2024
- 8462 Views
This feature adds support for a selected set of configured interfaces to collect egress flow samples. Egress sFlow can be configured on ethernet and port-channel interfaces.
- Written by Weichen Zhao
- Posted on June 29, 2023
- Updated on November 9, 2023
- 3910 Views
Prior to this feature, we supported a maximum of two levels of Forward Equivalence Class (FEC) hierarchies for vxlan routing tunnels in hardware.
- Written by Prateek Mali
- Posted on August 19, 2020
- Updated on May 22, 2024
- 18591 Views
Access Control Lists (ACL) use packet classification to mark certain packets going through the packet processor pipeline and then take configured action against them. Rules are defined based on various fields of packets and usually TCAM is used to match packets to rules. For example, there can be a rule to match the packet source IP address against a list of IP addresses, and drop the packet if there is a match. This will be expressed in TCAM with multiple entries matching the list of IP addresses. Number of entries is reduced by masking off bits, if possible. TCAM is a limited resource, so with classifiers having a large number of rules and a big field list, TCAM runs out of resources.
- Written by Prasanna Parthasarathy
- Posted on December 23, 2021
- Updated on July 12, 2024
- 12300 Views
SwitchApp is an FPGA-based feature available on Arista’s 7130LB-Series and 7132LB-Series platforms. It performs ultra low latency Ethernet packet switching. Its packet switching feature set, port count, and port to port latency are a function of the selected SwitchApp profile. Detailed latency measurements are available in the userguide on the Arista Support site.
- Written by Robert Spark
- Posted on June 21, 2021
- Updated on September 8, 2023
- 6641 Views
This feature adds support for viewing the Digital Optical Monitoring (DOM) parameters for the optics that support enhanced diagnostics from the CLI. The show commands described later in this document can be used to view the instantaneous values for various modulation parameters like Signal-To-Noise Ratio, Residual Inter Symbol Interference, PAM4 Level Transition Parameters, etc. that such optics support.
- Written by Daria Tsaregorodtseva
- Posted on August 23, 2022
- Updated on July 13, 2023
- 4887 Views
A QoS Policy-maps policer is said to be shared when “set-policer” action is present under the qos features ( qos ip, qos ipv6, qos mac ) of a TCAM profile. When such shared QoS policy-map with policer action is configured on multiple interfaces, the policer instance is shared among all the interfaces, the policy-map is applied on. If in case, a unique policer instance is required per interface, a duplicate policy-map needs to be created for each interface, which will require additional TCAM resources.
- Written by Manpreet
- Posted on June 29, 2023
- Updated on July 11, 2023
- 4715 Views
Default routing protocols model will be set to multi-agent in 4.30.1. Note that the default value is only used if a value is not specified in startup-config.
- Written by Isidor Kouvelas
- Posted on February 28, 2022
- Updated on July 29, 2024
- 13244 Views
Virtual Private LAN Service (VPLS) appears in (almost) all respects as an Ethernet type service to customers of a Service Provider (SP). A VPLS glues together several individual LANs across a packet switched network to appear and function as a single bridged LAN. This is accomplished by incorporating MAC address learning, flooding, and forwarding functions in the context of pseudowires that connect these individual LANs across the packet switched network. LDP signaling is used for the setup and teardown of the mesh of pseudowires that constitute a given VPLS instance.
- Written by Rama Paduvalli
- Posted on May 1, 2015
- Updated on July 3, 2023
- 4065 Views
The VLAN mapping or translation feature provides the ability to map an arbitrary VLAN tag to a particular bridging VLAN on the switch. This mapping can be either bidirectional or applied only in one direction (incoming/outgoing).
- Written by Simon Liang
- Posted on September 5, 2021
- Updated on May 30, 2024
- 8015 Views
This document describes the VRF selection policy and VRF fallback feature. A VRF selection policy contains match rules that specify certain criteria (e.g. DSCP, IP protocol) as well as a resulting action to select a VRF in which to do the FIB lookup. The VRF fallback feature is an extension of these policies which allows users to optionally specify a “fallback” VRF for each VRF. The behavior is such that if the FIB lookup fails in a match rule’s selected VRF, another lookup will be attempted in the configured fallback VRF. Additionally, the fallback VRF itself can have yet another fallback VRF, such that if the lookup in the VRF and fallback VRF fail, the fallback-of-the-fallback VRF will be looked up (see the Configuration section for an example of this).
- Written by Zhuang Liu
- Posted on June 29, 2023
- Updated on July 11, 2023
- 3009 Views
This feature is used to add VRRP support for local-proxy-arp. Previously, when both ip local-proxy-arp and a VRRP virtual mac address were configured on the same router, when the router received an ARP request with an IP address within the same subnet as the router, the router replied with the physical mac address, while the expected behavior is to reply with the virtual mac address for the ARP sender MAC, while for Ethernet Source MAC, using virtual mac address for VRRP v2, using physical mac address for VRRP v3. This feature is designed to fill this gap.
- Written by Sarah Chen
- Posted on June 5, 2023
- Updated on July 19, 2024
- 3287 Views
Wan Routing System solution provides connectivity between different enterprise branches, DCs and head office across different geographical regions, zones and sites by using the best optimal path available based on the type of application.