As of EOS release 4.19.0F, breakout mode is not supported on any ports between 11-26 (inclusive) and ports between 47-62 (inclusive), and these ports can only run at 1x40GbE or 1x100GbE

Breakout 4.21.3F

This document explains how to configure and deploy Arista MSS with Fortinet FortiGate firewalls (also called

This feature adds support for a dynamic configuration model to eliminate the need for the network administrator to


Neighbor default originate feature is used to advertise a default route to the neighbor (peer or peer group) even when


Starting from EOS 4.21.3F, license for feature BRCM STRATA SCHW TP, which stands for Broadcom Strata Single Chip

CEOS 4.21.3F

DCS 7280SRM 40CX2 is a 1RU fixed system, which has two CFP2 ports (41 and 42), capable of hosting either CFP2 DCO, or

4.21.3F Staircase FEC

If a network uses deep packet inspection for its ECMP, RFC7432 recommends deployments to use a control word in L2 EVPN


Log archiving is used to periodically (every minute) copy logs and core files from tmpfs filesystems /var/log and


Explicit Congestion Notification (ECN) is an extension to the Internet Protocol and to the Transmission Control

ECN 4.21.3F

ContainerTracer provides a composite view of the physical network topology and Kubernetes. Kubernetes and CVX must


This is an addendum to the “IP in IP decapsulation” document.


This feature sets the default administrative status of physical Ethernet interfaces to


On Algomatch platforms, expansions and encoding transformations on IP prefixes are performed before attempting to

SWI Image Verification is a feature that allows one to determine if their SWI image has been tampered with. It verifies


“MLAG Domain Shared Router MAC” is a new mechanism to introduce a new router MAC to be used for MLAG TOR


Many Layer 2 VXLAN deployments span more than one physical data center (DC) location. Typically, each DC has several


FIB compression allows us to program routes into the hardware more efficiently. Routes are programmed in the route


Until now, all PTP packets received on Arista switches with PTP boundary mode enabled will automatically be sent to

All modern high density electronic circuit chips are susceptible to naturally occurring phenomenon called single

SEU 4.21.3F

Some of Arista’s products may use one or more FPGAs for certain tasks pertaining to controlling one or more of the

4.21.3F CRC

This feature enhances the feature limitation checking when performing Smart System Upgrade (SSU) and enables


IPv4 routes of certain prefix lengths can be optimized for enhanced route scale. The feature is described here. This

4.21.3F 2M Routes

Subinterfaces divide a single ethernet or port channel interface into multiple logical L3 interfaces based on the


Explicit Congestion Notification (ECN) is an IP and TCP extension that facilitates end to end network congestion

Mirroring ACL 4.21.3F

MMU Profile CLI allows to reserve buffers in either cells or bytes. This feature eases the configuration as different


The BGP graceful restart mechanism defined in RFC4724 limits the usage of BGP graceful restart to BGP protocol


It has been observed that on Arista products using Alta switching chip from Intel/Fulcrum may experience the CPU Lock

SEU 4.21.3F

Selective ARP install is the selective programming of remote ARPs in hardware as received through EVPN Type 2 MAC IP

4.21.3F Selective ARP

The following QoS features are supported on the vEOS router (DPDK flavor):. The port can be configured

4.21.3F DPDK VEOS Router

This feature allows for setting BGP path attribute Multi Exit Discriminator for IGP routes advertised by BGP. This


The MMU watermark counters report the maximum usage of the MMU queues during a given time window. This feature reports


BGP Large Communities, as defined in RFC8092, is now supported within EOS. Both standard (4 octets) and


The route map feature in BGP allows filtering and manipulating BGP path information. It combines set statements with

BGP 4.21.3F As Path

4.21.3F release supports reading and streaming various OpenConfig configuration and state models over gNMI (gRPC

OpenConfig 4.21.3F

The route map subroutine (referred from here on as sub route map) configuration simplifies routing policies by

4.21.3F Subroutemap

Some monitoring tools have a limited time to receive information from the switch and may break if waiting for a

Eapi 4.21.3F

This feature provides total ingress MPLS packet and byte counters received per interface. DCS

MPLS 4.21.3F

4.21.3F introduces support for the feature on the platforms listed below. The TOI describing the feature support on

4.21.3F TrTCM

In certain VXLAN deployments with either NSX/Logical Router or EVPN IRB, active nodes hosting a virtual IP address

Configuration of VXLAN overlay using EVPN allows for extension of Layer 2 (L2) or Layer 3 (L3) networks across

VXLAN 4.21.3F