- Written by Shyam Kota
- Posted on April 18, 2018
- Updated on October 24, 2018
- 6378 Views
Instead of statically assigning access VLAN on the authenticator port, it's sometimes desirable to offload the work
- Written by Shyam Kota
- Posted on April 18, 2018
- Updated on October 24, 2018
- 6287 Views
MAC Based Authentication is a facility which allows a set of MAC addresses to be programmed into the RADIUS server.
- Written by Yugant Rana
- Posted on April 23, 2018
- Updated on May 14, 2018
- 5876 Views
This feature allows the DHCP relay agent to insert or modify Converged Cable Access Platform (CCAP) Core IPv6
- Written by Michael (Mike) Fink
- Posted on December 22, 2017
- Updated on September 25, 2023
- 13896 Views
Filtered Mirroring allows certain packets to be selected for mirroring, rather than all packets ingressing or egressing a particular port.
- Written by Shyam Kota
- Posted on April 23, 2018
- Updated on May 14, 2018
- 5692 Views
EOS's architecture is built around the notion of agents. While the CLI show commands offer great insights into the
- Written by Pradeep Goyal
- Posted on December 22, 2017
- Updated on May 11, 2018
- 9022 Views
This features enables ARPs learnt on an SVI interface to be converted into Host routes which can further be
- Written by Evelyn Wang
- Posted on May 17, 2018
- Updated on May 17, 2018
- 5586 Views
In EOS 4.20.5F, Autonegotiation is supported on 7160 series. This feature provides IEEE802.3 Clause73
- Written by Kenneth Blanc
- Posted on June 6, 2017
- Updated on May 15, 2024
- 8378 Views
BFD Stateful Switchover (SSO) allows for a switchover from an active supervisor to a standby supervisor where BFD
- Written by Vasanth Sabavat
- Posted on April 23, 2018
- Updated on May 14, 2018
- 5945 Views
Community Instances offer a method of selecting BGP routes based on count of communities in the communities path
- Written by Josh Pfosi
- Posted on April 18, 2018
- Updated on May 13, 2018
- 6784 Views
This feature adds support for BGP peering over IPv6 link local addresses. As defined in RFC 4007, IPv6 addresses have
- Written by Shyam Kota
- Posted on May 17, 2018
- Updated on July 6, 2020
- 5882 Views
This feature implements RFC3107 that allows carrying a label stack with BGP route updates, using multi protocol BGP.
- Written by Shubham Kumar
- Posted on February 20, 2018
- Updated on January 24, 2022
- 5568 Views
"Block frames not matching any vlan mappings on trunk port" is a new feature that has been added in 4.20.5 release. When
- Written by Akshay Viswakumar
- Posted on February 22, 2018
- Updated on January 24, 2022
- 5661 Views
"Block Untagged Frames on Dot1Q Tunnel port" is a new feature that has been added in this release. When this feature is
- Written by Shyam Kota
- Posted on April 23, 2018
- Updated on February 4, 2022
- 6137 Views
This feature will provide a common encryption key to be used across all protocols to encrypt the neighbor password
- Written by Jonathan Doyle
- Posted on April 23, 2018
- Updated on December 23, 2021
- 6155 Views
By default, counters are polled from hardware every 2 seconds. This enhancement allows this period to be configured,
- Written by Tom Meng
- Posted on April 23, 2018
- Updated on May 14, 2018
- 6009 Views
Starting from EOS 4.20.5F, power supply low input voltage warning can be configured via a CLI command. Prior to the
- Written by Abhirami Shankar
- Posted on May 17, 2018
- Updated on May 17, 2018
- 5737 Views
EOS 4.20.5F introduces dedicated FEC (Forwarding Equivalence Class) per BGP next hop. This feature will ensure
- Written by Bharath Somayaji
- Posted on April 23, 2018
- Updated on March 30, 2023
- 12026 Views
In VXLAN EVPN deployments, a distributed anycast address is often used as the gateway address for end devices connected to the Vxlan Tunnel End Points (VTEPs). Similarly, in MLAG configurations in a VXLAN environment, ip address virtual could be used on both MLAG peers.
- Written by José Rios
- Posted on April 18, 2018
- Updated on February 6, 2022
- 7663 Views
DirectFlow is a feature that allows the user to steer traffic by matching on packet headers and/or metadata using the
- Written by Sharad Birmiwal
- Posted on May 17, 2018
- Updated on May 17, 2018
- 6167 Views
EOS 4.20.5F introduces support for disabling local interface, when a fault is signaled by the remote peer. The
- Written by Phani Bandaru
- Posted on May 17, 2018
- Updated on May 17, 2018
- 5515 Views
Source port filtering is enabled by default due to which packets are not allowed to egress on the same interface they
- Written by Lavanya Conjeevaram
- Posted on March 31, 2017
- Updated on November 29, 2023
- 12470 Views
Ethernet VPN (EVPN) is an extension of the BGP protocol introducing a new address family: L2VPN (address family
- Written by Baptiste Covolato
- Posted on April 23, 2018
- Updated on May 14, 2018
- 6020 Views
This feature allows the possibility to enable/disable the hardware watchdog. By default the hardware watchdog is
- Written by Stefan Rebaud
- Posted on May 17, 2018
- Updated on August 20, 2024
- 10182 Views
EOS-4.20.5 adds support for hardware-accelerated sFlow on compatible R2 platforms.
- Written by Jeff Chan
- Posted on May 17, 2018
- Updated on May 17, 2018
- 6549 Views
Previously, EOS only supported the two step variation of the transparent clock as described in the IEEE 1588
- Written by Kaladhar Musunuru
- Posted on April 18, 2018
- Updated on May 13, 2018
- 5904 Views
This feature provides support for per interface ingress packet and byte counters for both IPv4 and IPv6.
- Written by Shyam Kota
- Posted on April 23, 2018
- Updated on April 23, 2018
- 5748 Views
The route map feature 'invert result' has been added to the 'match community' and 'match extcommunity' statements
- Written by Kartic Bhargav
- Posted on April 23, 2018
- Updated on May 15, 2018
- 6863 Views
Similar to L4 ports, ACL rules can be configured to filter ingress packets based on their IP length (present in the IPv4
- Written by Steve Ulrich
- Posted on April 23, 2018
- Updated on June 29, 2023
- 6497 Views
IS-IS Counters feature adds support to monitor per interface count of received, transmitted and dropped IS-IS PDUs at the Rib/ISIS agent level. The counters start getting incremented once IS-IS is enabled on an interface and persist until IS-IS is disabled on it or the Rib/Isis agent restart.
- Written by Robert Oliveira
- Posted on April 18, 2018
- Updated on May 13, 2018
- 5931 Views
The partial SPF computation avoids a full shortest path computation to achieve quicker convergence and save CPU load
- Written by Navneet Sinha
- Posted on June 29, 2016
- Updated on July 30, 2024
- 13739 Views
Segment Routing provides mechanism to define end-to-end paths within a topology by encoding paths as sequences of sub-paths or instructions. These sub-paths or instructions are referred to as “segments”. IS-IS Segment Routing (henceforth referred to as IS-IS SR) provides means to advertise such segments through IS-IS protocol.
- Written by Przemyslaw Jacak
- Posted on May 17, 2018
- Updated on May 17, 2018
- 6054 Views
This feature allows a user to configure adjacency SID for IS IS adjacencies so that we have deterministic values of
- Written by Przemyslaw Jacak
- Posted on April 18, 2018
- Updated on April 18, 2018
- 5927 Views
This document describes two features that allow dynamic metric change for IS IS based on interface speed.
- Written by Pintu Kumar
- Posted on April 23, 2018
- Updated on February 24, 2023
- 7735 Views
Traffic Engineering (TE) provides a mechanism to network administrators to control the path that a data packet takes, bypassing the standard routing model which uses routes along the shortest path. Traffic engineered paths are generally computed on the head-end routers of the topology based on various constraints (e.g. minimum bandwidth, affinity) configured for those paths and attributes (e.g available bandwidth, color) received from devices in the network topology.
- Written by Ramakrishnan G
- Posted on April 18, 2018
- Updated on June 22, 2022
- 8758 Views
The L2EVPN MPLS feature is available when configuring BGP in the multi agent routing protocol model.
- Written by Vijay Mahadevan
- Posted on April 18, 2018
- Updated on December 8, 2020
- 11728 Views
The L2EVPN MPLS feature is available when configuring BGP in the multi agent routing protocol model. Ethernet VPN
- Written by Nathan Wolfe
- Posted on February 15, 2018
- Updated on February 21, 2024
- 11622 Views
Introduced in EOS-4.20.1F, “selectable hashing fields” feature controls whether a certain header’s field is used in the hash calculation for LAG and ECMP.
- Written by Nathan Wolfe
- Posted on April 23, 2018
- Updated on May 14, 2018
- 6422 Views
Introduced in EOS 4.20.5, LAG hashing key shift controls how many bits we shift the LAG load balance key.
- Written by Nathan Wolfe
- Posted on April 23, 2018
- Updated on May 14, 2018
- 6406 Views
Introduced in EOS 4.20.5F, LAG ingress interface hashing controls whether the ingress interface is used in the LAG
- Written by Trevor Yu
- Posted on April 18, 2018
- Updated on July 21, 2023
- 6869 Views
LANZ adds support for configuring global thresholds for Ethernet ports on DCS 7020, DCS 7050TX, DCS 7050X2, DCS
- Written by Sahil Midha
- Posted on December 22, 2017
- Updated on February 6, 2022
- 8653 Views
Link Fault Signalling (LFS) is a mechanism by which remote link faults are asserted over a link experiencing
- Written by Chris Roche
- Posted on April 18, 2018
- Updated on May 13, 2018
- 6450 Views
The management tech support policy provides the capability to efficiently manage the output of "show tech support"
- Written by Prakhar Rastogi
- Posted on April 23, 2018
- Updated on April 23, 2018
- 7442 Views
MLAG Smart System Upgrade (SSU) provides the ability to upgrade the EOS image of an MLAG switch with minimal traffic
- Written by Wendi Liu
- Posted on April 23, 2018
- Updated on December 17, 2020
- 6880 Views
As of release 4.20.5F, this feature is now available on 7160 series switches. Here is a link to earlier
- Written by Kaladhar Musunuru
- Posted on May 17, 2018
- Updated on May 17, 2018
- 5864 Views
This feature provides per label ingress packet and byte counters for MPLS routed packets. DCS
- Written by Mihyar Baroudi
- Posted on August 3, 2018
- Updated on August 3, 2018
- 7906 Views
The EOS Event Handler feature provides the ability to specify a condition and an action to be carried out when that
- Written by Saravanan Balasubramanian
- Posted on April 23, 2018
- Updated on May 8, 2019
- 14451 Views
This document provides an Arista specific solution to deliver multicast traffic in a Vxlan environment where L2
- Written by Mihyar Baroudi
- Posted on April 23, 2018
- Updated on April 25, 2018
- 6427 Views
The EOS Event Handler feature provides the ability to specify a condition and an action to be carried out when that
- Written by Nathan Kitchen
- Posted on April 23, 2018
- Updated on April 23, 2018
- 5891 Views
The SNMP notifications (Trap and Inform messages) that were most recently sent are recorded in a log, as described by
- Written by Padmini Misra
- Posted on April 23, 2018
- Updated on May 14, 2018
- 6190 Views
These are the release notes and configuration guide for the OpenConfig feature available in the 4.20.5F EOS release.