- Written by Hyun Chul Chung
- Posted on June 10, 2020
- Updated on October 14, 2021
- 1336 Views
As of EOS 4.22.0F, EVPN all active multihoming is supported as a standardized redundancy solution. Redundancy
- Written by Tarun Jaswanth LNU
- Posted on August 24, 2020
- Updated on June 16, 2022
- 4410 Views
802.1X is an IEEE standard protocol that prevents unauthorized devices from gaining access to the network.
- Written by Ajay Kini
- Posted on June 21, 2020
- Updated on June 21, 2020
- 998 Views
Accumulated IGP Metric (AIGP) is an optional non transitive BGP attribute used to carry an IGP metric with BGP route
- Written by John Foley
- Posted on June 3, 2020
- Updated on June 3, 2020
- 827 Views
The “set as path prepend” and “set as path match all replacement” route map configuration
- Written by Srinivasan Koona Lokabiraman
- Posted on June 3, 2020
- Updated on June 3, 2020
- 1053 Views
It is often useful to know on a per AFI/SAFI basis, the number of paths that have been selected from a peer as best paths.
- Written by Vipul Shah
- Posted on March 13, 2020
- Updated on May 4, 2022
- 1294 Views
The goal of IAR operation is to minimize the CPU processing and churn in hardware by identifying a set of nexthop adjacencies such that updating those adjacencies in-place is sufficient to correctly forward the traffic quickly for all the affected routes.
- Written by Saurav Arora
- Posted on January 18, 2019
- Updated on September 3, 2020
- 1325 Views
Neighbor default originate feature is used to advertise a default route to the neighbor (peer or peer group) even when
- Written by Manoj Agiwal
- Posted on September 30, 2015
- Updated on March 28, 2022
- 2019 Views
BGP Non Stop Forwarding (NSF) aims to minimize the traffic loss when the the following scenarios occur:
- Written by Jason Shamberger
- Posted on April 20, 2020
- Updated on February 11, 2022
- 1756 Views
RPKI provides a mechanism to validate the originating AS of an advertised prefix. EOS support
- Written by Keon Vafai
- Posted on June 22, 2020
- Updated on June 22, 2020
- 2033 Views
This feature adds support for BGP UCMP in the multi agent routing protocol model. The TOI for BGP UCMP in the ribd
- Written by Trevor Mendez
- Posted on April 17, 2020
- Updated on February 5, 2022
- 1212 Views
Segment Routing Traffic Engineering Policy (SR TE) aka SR Policy makes use of Segment Routing (SR) to allow a headend
- Written by Cihan Ekici
- Posted on June 3, 2020
- Updated on June 3, 2020
- 928 Views
On most PHYs, we run a sequence of steps in order to bring the links up reliably, because of it’s conservative
- Written by Vishwanath Sungal
- Posted on June 22, 2020
- Updated on June 22, 2020
- 758 Views
EOS 4.24.1 introduces Linecard management changes in the DCS 7368X4 series. In this release, the DCS 7368 is
- Written by Huong Nguyen
- Posted on November 13, 2019
- Updated on April 29, 2022
- 1609 Views
Support for DHCPv4 (RFC 2131) and DHCPv6 Server (RFC 8415) was added to EOS-4.22.1 and EOS-4.23.0 respectively. EOS DHCP server leverages ISC Kea as backend. The router with DHCP Server enabled acts as a server that allocates and delivers network addresses with desired configuration parameters to its hosts.
- Written by Haotian Zhang
- Posted on June 19, 2020
- Updated on June 19, 2020
- 636 Views
This article describes the support for specifying DSCP mask in IPv4 and IPv6 access lists. DSCP mask can be used to
- Written by Vamsi Anne
- Posted on July 17, 2020
- Updated on July 17, 2020
- 921 Views
Egress Sflow sampling feature allows to sample unicast packets based on the egress interface. The
- Written by Rick Porter
- Posted on June 29, 2020
- Updated on June 29, 2020
- 786 Views
Fast poll counters allow for rapid collection of a basic set of MAC counters on supported platforms at a very high
- Written by Yagna Siriki
- Posted on June 15, 2020
- Updated on June 15, 2020
- 648 Views
Starting from EOS 4.24.0F and EOS 4.24.0FX, RADIUS Attribute 8 (Framed IP Address) is included in Accounting Start,
- Written by Deepak Sebastian
- Posted on November 12, 2019
- Updated on June 9, 2020
- 1215 Views
This feature adds support for offloading BFD Transmit path to hardware (ASIC) for specific types of BFD sessions.
- Written by Rahul Vasist
- Posted on April 20, 2020
- Updated on April 26, 2021
- 1359 Views
EOS 4.24.0 adds support for hardware accelerated sFlow on R3 systems. Without hardware acceleration, all sFlow
- Written by Rajesh Velandy
- Posted on June 11, 2019
- Updated on September 5, 2019
- 1856 Views
Hardware counter feature allows enabling counters for features using programmable hardware counter resources.
- Written by Madhu Sudan
- Posted on June 21, 2020
- Updated on July 8, 2020
- 1309 Views
Several customers have expressed interest in using IPv6 addresses for VXLAN underlay in their Data Centers (DC).
- Written by Clay Miller
- Posted on June 5, 2020
- Updated on February 5, 2022
- 848 Views
CALEA is the Communications Assistance for Law Enforcement Act which was passed into United States law
- Written by Shyam Kota
- Posted on June 5, 2020
- Updated on October 11, 2021
- 778 Views
This feature implements RFC 3478. It allows devices to preserve the MPLS LDP LFIB entries in the forwarding plane if
- Written by Kenneth Cheung
- Posted on June 4, 2020
- Updated on February 8, 2021
- 1276 Views
On a MLAG chassis, MAC addresses learned on individual peers are synced and appropriate interfaces are mapped to
- Written by Pedro Coutinho
- Posted on June 4, 2020
- Updated on June 4, 2020
- 763 Views
EOS version 4.24.1F introduces support for specifying multiple vias to form ECMP in MPLS static tunnels. A new
- Written by Prajakta Joshi
- Posted on November 6, 2019
- Updated on March 3, 2022
- 1171 Views
Multiprotocol Label Switching (MPLS) is a networking process that replaces complete network addresses with short
- Written by Aparna Karanjkar
- Posted on June 17, 2019
- Updated on February 14, 2022
- 2580 Views
EOS supports reading and streaming various OpenConfig configuration and state models over gNMI (gRPC Network
- Written by Sandeep Betha
- Posted on June 4, 2020
- Updated on June 4, 2020
- 734 Views
Current EOS PIM sparse mode implementation installs an (S, G) route in the hardware whenever it receives an (S, G) join
- Written by Chris Roche
- Posted on December 16, 2019
- Updated on March 30, 2022
- 1116 Views
This feature introduces the support for OSPF routes over GRE tunnels under default as well as non-default VRFs. The feature is disabled by default.
- Written by Deeksha Srivastava
- Posted on June 3, 2020
- Updated on June 3, 2020
- 1081 Views
VRF Route leaking can be used when routes from one VRF are required in another VRF (e.g. in case of shared services). If
- Written by Sharad Birmiwal
- Posted on November 4, 2020
- Updated on February 11, 2022
- 4402 Views
Routing control functions (RCF) is a new language that can be used to express BGP route filtering and attribute
- Written by Zhen Xue
- Posted on June 29, 2020
- Updated on June 29, 2020
- 1201 Views
Bidirectional Forwarding Detection (BFD) is a protocol that provides low overhead, short duration detection of
- Written by Haotian Zhang
- Posted on June 4, 2020
- Updated on February 7, 2022
- 1136 Views
This article describes the support for Filtered Mirroring using security ACL. The user can selectively mirror
- Written by Manoharan Sundaramoorthy
- Posted on September 4, 2018
- Updated on February 5, 2022
- 3901 Views
Segment Routing Traffic Engineering Policy (SR TE) aka SR Policy makes use of Segment Routing (SR) to allow a headend
- Written by Gaofeng Yue
- Posted on June 3, 2020
- Updated on December 9, 2021
- 800 Views
This feature introduces a metric for static routes so that the user can configure both administrative distance and
- Written by Bohan Yang
- Posted on August 28, 2019
- Updated on July 9, 2020
- 4848 Views
Due to hardware constraints on specific platforms, Ethernet interfaces are grouped together, within which their
- Written by Jason Shamberger
- Posted on March 11, 2020
- Updated on February 22, 2021
- 2896 Views
EOS 4.21.3F introduces support for BGP Flowspec, as defined in RFC5575 and RFC7674. The typical use case is to filter
- Written by Yongguang Xu
- Posted on June 3, 2020
- Updated on June 3, 2020
- 737 Views
The IPv6 multicast route counters count packets and bytes per group, source and vrf . Every IPv6
- Written by Anuj Issar
- Posted on June 5, 2020
- Updated on February 5, 2022
- 897 Views
GRE (Generic Routing Encapsulation) packet header has a Key extension which is used by Arista to carry packet
- Written by Vishrant Vasavada
- Posted on June 10, 2020
- Updated on June 11, 2020
- 737 Views
The CLI command “show rib route ip[ipv6]” and its sub commands (e.g. “show rib route ip
- Written by Brett Hatch
- Posted on June 5, 2020
- Updated on June 9, 2020
- 955 Views
Static NAT rules may optionally include an access list to filter the packets to be translated.
- Written by Michelle Wang
- Posted on June 8, 2020
- Updated on February 5, 2022
- 1026 Views
EOS provides a way to extend its capabilities through the installation of extensions. An extension is a pre packaged
- Written by Sandeep Kopuri
- Posted on October 7, 2019
- Updated on October 26, 2021
- 1725 Views
Topology Independent Fast Reroute, or TI LFA, uses IS IS SR to build loop free alternate paths along the post
- Written by Ioana Costea
- Posted on June 18, 2020
- Updated on June 18, 2020
- 765 Views
Some users need to configure the source MAC on routed ports, in some cases.To achieve this,a new CLI configuration
- Written by Travis Hammond
- Posted on April 24, 2020
- Updated on January 17, 2022
- 1056 Views
TAP Aggregation support for the DCS 7280R3 and DCS 7500R3 series is documented below, including the release in which a
- Written by Anais Taing
- Posted on June 5, 2020
- Updated on April 18, 2022
- 839 Views
In TAP Aggregation mode, when receiving a packet whose Frame Check Sequence (FCS) is corrupted, the default behavior is to replace the bad FCS with the correct value and forward it.
- Written by Vipul Shah
- Posted on August 27, 2019
- Updated on June 24, 2022
- 2050 Views
BGP routing information often contains more than one path to the same destination network. The BGP best-path selection algorithm determines which of these paths should be considered as the best path to that network.
- Written by Satish Kumar Selvaraj
- Posted on April 20, 2020
- Updated on December 9, 2021
- 710 Views
TCB provides a mechanism to capture information around a MMU(Memory management unit) drop event.
- Written by Neel Neogi
- Posted on December 19, 2019
- Updated on December 21, 2021
- 1065 Views
Two rate three color marker (TrTCM) meters an incoming packet stream and marks the packets based on two rates, PIR