- Written by Ravi Krishnamurthy
- Posted on June 11, 2019
- Updated on June 12, 2019
- 7227 Views
This feature increases the number of routes that can be forwarded using hardware on platforms based on ASIC that
- Written by Deeksha Srivastava
- Posted on June 17, 2019
- Updated on June 20, 2019
- 7950 Views
This feature allows a user to configure Autonomous System Number (ASN) in Asdot notation and get the ASN in output of
- Written by Tarun Jaswanth LNU
- Posted on August 24, 2020
- Updated on October 17, 2024
- 26318 Views
802.1X is an IEEE standard protocol that prevents unauthorized devices from gaining access to the network.
- Written by Rahul Vasist
- Posted on June 11, 2019
- Updated on June 20, 2019
- 8095 Views
ASU, or Accelerated Software Upgrade, is a feature to minimize traffic loss when upgrading from one ASU supported EOS
- Written by Ethan Vadai
- Posted on June 11, 2019
- Updated on June 11, 2019
- 7540 Views
A common way of configuring a switch is with config session or with config replace. In a config session, if the
- Written by Ethan Vadai
- Posted on June 13, 2019
- Updated on June 19, 2019
- 7574 Views
ACL counters can be displayed on a per chip basis by passing an additional option in the ACL show command. The output of
- Written by Dan Cunningham
- Posted on May 21, 2019
- Updated on July 12, 2023
- 7664 Views
This feature adds support for 10Gb, 25Gb, and 50Gb speeds on additional ports of the 7280QRA C36S and 7280QR C72:
- Written by Shyam Kota
- Posted on June 12, 2019
- Updated on June 12, 2019
- 6957 Views
When a switchport receives its own STP BPDU, the port goes into role ‘Backup’ and state ‘Discarding’. The
- Written by Paul Natusch
- Posted on June 11, 2019
- Updated on June 11, 2019
- 6908 Views
BFD (Bidirectional Forwarding Detection) authentication is used to validate the identity of BFD peers.
- Written by Jason Shamberger
- Posted on March 11, 2020
- Updated on November 14, 2024
- 16249 Views
EOS 4.21.3F introduces support for BGP Flowspec, as defined in RFC5575 and RFC7674. The typical use case is to filter or redirect DDoS traffic on edge routers.
- Written by Keon Vafai
- Posted on September 30, 2019
- Updated on September 30, 2019
- 8928 Views
This feature implements RFC3107 that allows carrying a label stack with BGP route updates, using multi protocol BGP.
- Written by Sandeep Betha
- Posted on January 22, 2021
- Updated on February 6, 2022
- 11525 Views
This feature adds support for user configured BGP Nexthop Resolution RIB profiles for various BGP based services
- Written by Lakshmi Yarramaneni
- Posted on June 13, 2019
- Updated on June 20, 2019
- 7270 Views
The replace remote AS feature allows a provider edge (PE) router to change the autonomous system (AS) number used by a
- Written by Charles Gibert
- Posted on June 13, 2019
- Updated on June 13, 2019
- 7362 Views
The “set as path prepend” clause in route map configuration mode has been enhanced with the addition of
- Written by Pintu Kumar
- Posted on June 17, 2019
- Updated on June 19, 2019
- 12066 Views
This feature extends the BGP Layer 3 VPN Import/Export and VRF Route Leaking functionality to “default” VRF.
- Written by Alex Volinsky
- Posted on June 10, 2019
- Updated on June 20, 2019
- 6179 Views
Coherent systems connect data centers over distances of hundreds, even thousands of miles. In some cases, the fiber
- Written by Tony Truong
- Posted on June 10, 2019
- Updated on October 11, 2024
- 7373 Views
This feature allows the user to reset the forward error correction (FEC) statistics counters shown in the output of
- Written by Alex Volinsky
- Posted on May 21, 2019
- Updated on June 12, 2019
- 9069 Views
The feature allows a simulated transceiver removal, without physically touching the module. This can be used for
- Written by Sahil Midha
- Posted on June 14, 2019
- Updated on October 25, 2022
- 8452 Views
This feature can be divided into 3 parts. Enable support for different threshold per Color per TX queue We
- Written by Anuj Issar
- Posted on June 10, 2019
- Updated on August 17, 2020
- 9375 Views
This article describes the support for IP ACLs on the egress ports for filtering Bridged IPv4 traffic. The users will
- Written by Shyam Kota
- Posted on June 13, 2019
- Updated on June 13, 2019
- 6209 Views
The base kernel for EOS was upgraded to use newer maintenance version 4.9.122 from version 4.9.108, bringing many
- Written by Thomas Giarratana
- Posted on June 12, 2019
- Updated on June 12, 2019
- 6833 Views
This feature extends the capabilities of event monitor to include IPv6 Route and IPv6 Neighbor event logging.
- Written by Deepan Jayaraj
- Posted on October 3, 2019
- Updated on October 3, 2019
- 7074 Views
This feature provides a mechanism to export default VRF routes into EVPN and advertise them as EVPN type 5 IP Prefix
- Written by Chris Hydon
- Posted on June 17, 2019
- Updated on January 25, 2024
- 22461 Views
Ethernet VPN (EVPN) networks normally require some measure of redundancy to reduce or eliminate the impact of outages and maintenance. RFC7432 describes four types of route to be exchanged through EVPN, with a built-in multihoming mechanism for redundancy. Prior to EOS 4.22.0F, MLAG was available as a redundancy option for EVPN with VXLAN, but not multihoming. EVPN multihoming is a multi-vendor standards-based redundancy solution that does not require a dedicated peer link and allows for more flexible configurations than MLAG, supporting peering on a per interface level rather than a per device level. It also supports a mass withdrawal mechanism to minimize traffic loss when a link goes down.
- Written by Alton Lo
- Posted on June 14, 2019
- Updated on October 7, 2019
- 9273 Views
Starting with EOS release 4.22.0F, the EVPN VXLAN L3 Gateway using EVPN IRB supports routing traffic from IPV6 host to
- Written by Shyam Kota
- Posted on June 13, 2019
- Updated on October 19, 2021
- 8958 Views
Fair Adaptive Dynamic Thresholds (FADT) provides efficient allocation of shared packet buffer resources amongst
- Written by Gowtham Rameshkumar
- Posted on June 10, 2019
- Updated on October 31, 2022
- 8179 Views
An introduction to Nexthop-groups can be seen in the Nexthop-Group section of eos.With this feature, IP packets matching a static Nexthop-Group route can be encapsulated with a GRE tunnel and forwarded.
- Written by Sudheer Y R
- Posted on October 9, 2018
- Updated on December 5, 2023
- 19392 Views
This feature introduces the hardware forwarding support for IPv4 over IPv4, GRE-Tunnel interfaces on Arista Switches. A GRE-Tunnel interface acts as a logical interface which performs the GRE encapsulation or decapsulation.
- Written by Pedro Coutinho
- Posted on June 10, 2019
- Updated on June 11, 2019
- 8466 Views
This feature involves the use of packet’s Time to Live (TTL) (IPv4) or Hop Limit (IPv6) attributes to protect
- Written by Rajesh Velandy
- Posted on June 11, 2019
- Updated on September 5, 2019
- 10127 Views
Hardware counter feature allows enabling counters for features using programmable hardware counter resources.
- Written by Abhirami Shankar
- Posted on January 21, 2019
- Updated on February 5, 2022
- 14451 Views
This feature allows inter VRF route leaking locally from one VRF into another on the same device. Inter VRF routes can
- Written by Michelle Wang
- Posted on June 14, 2019
- Updated on June 14, 2019
- 7796 Views
In a typical switch deployment, multiple ports can have the same configuration, such as description and access VLAN.
- Written by Neil Jarvis
- Posted on June 13, 2019
- Updated on May 28, 2024
- 7655 Views
The Interface Reflector feature allows performing certain actions (such as source/destination MAC address swap) on bridged packets that are reflected back from the interface. It is useful to test properties and SLAs before deploying the service for a customer.
- Written by Bill Terrell
- Posted on October 1, 2019
- Updated on March 15, 2022
- 10470 Views
IPv4 traffic can be encrypted and carried over IPSec tunnels originating or terminating on EOS dut.
- Written by Christoph Schwarz
- Posted on June 12, 2019
- Updated on November 6, 2023
- 7795 Views
This feature makes a switch act as a neighbor discovery proxy for an IPv6 subnets. It can be used in conjunction with BUM
- Written by Yuanzhi Gao
- Posted on June 12, 2019
- Updated on February 5, 2022
- 7255 Views
This configuration command features an IPv6 Neighbor Discovery (ND) option (called Boot File URL (BFURL) option)
- Written by Shyam Kota
- Posted on October 8, 2018
- Updated on June 12, 2019
- 7805 Views
This feature adds support for PIM SSM (Source Specific Multicast) for IPv6 Multicast Routing on platforms listed
- Written by Tanushree Bansal
- Posted on June 11, 2019
- Updated on June 20, 2019
- 7070 Views
This feature implements RFC6119, which allows the extension of IS IS protocol to carry IPv6 Traffic Engineering
- Written by Manoj Agiwal
- Posted on September 30, 2019
- Updated on September 30, 2019
- 6941 Views
This feature allows a user to configure multiple static adjacency SIDs for an IS IS adjacency. This feature is an
- Written by Prakrati Vidyarthi
- Posted on August 16, 2018
- Updated on November 5, 2024
- 15462 Views
Normally, a switch traps L2 protocol frames to the CPU. However, certain use-cases may require these frames to be forwarded or dropped. And in cases where the L2 protocol frames are forwarded (eg: Pseudowire), we may require the frames to be trapped to the CPU or dropped. The L2 Protocol Forwarding feature provides a mechanism to control the behavior of L2 protocol frames received on a port or subinterface.
- Written by Rick Porter
- Posted on June 10, 2019
- Updated on April 27, 2020
- 7085 Views
This feature allows customers to run Label Distribution Protocol (LDP) on a subset of the interfaces that run Multi
- Written by Suresh Krishnan Balakrishnan
- Posted on June 10, 2019
- Updated on March 4, 2024
- 8635 Views
The main motivation for the feature is to provide high availability to the ManagementActive interface (Management0) via multiple redundant paths in the modular system. The ManagementActive interface(Management0) is a virtual interface pointing to the active supervisor.
- Written by Naina Jalan
- Posted on June 13, 2019
- Updated on June 13, 2019
- 6897 Views
Enhancement of QOS class maps to match on nexthop groups along with dscp (dscp being optional) to set any QOS actions
- Written by Shyam Kota
- Posted on June 13, 2019
- Updated on June 13, 2019
- 12410 Views
The objective of Maintenance Mode on MLAG is to gracefully drain away the traffic (L2 and BGP) flowing through a switch
- Written by Will Rideout
- Posted on December 17, 2020
- Updated on December 17, 2020
- 12030 Views
A new configuration model for the BFD (Bidirectional Forwarding Detection) agent was added in order to more
- Written by Sharad Birmiwal
- Posted on February 3, 2022
- Updated on February 3, 2022
- 9087 Views
The "set metric" clause in a route map sequence has been enhanced with the addition of the "igp nexthop cost" keyword.
- Written by Simon Liang
- Posted on June 10, 2019
- Updated on March 13, 2020
- 7016 Views
Normally, Multiprotocol Label Switching (MPLS) determines the packet forwarding destination based on the top most
- Written by Wade Carpenter
- Posted on August 16, 2018
- Updated on May 22, 2024
- 8039 Views
IP traceroute and path MTU (PMTU) discovery both require that routers send ICMP reply messages to the host that invokes each network function. When the route to the destination host traverses an MPLS label-switched path (LSP), the label switching routers (LSRs) will also need to send ICMP reply messages to the originating host.
- Written by Chitra Ramachandran
- Posted on June 12, 2019
- Updated on June 22, 2021
- 6966 Views
Add support for dynamic prefix list based matching in multi agent model. Please refer the TOI for rib
- Written by Sruthi Jose
- Posted on June 13, 2019
- Updated on June 20, 2019
- 7712 Views
The PIM routing protocol builds multicast routing state based on control packets and multicast data events. In our