- Written by Radu Handolescu
- Posted on April 29, 2021
- Updated on April 29, 2021
- 7644 Views
This TOI details the following feature additions:. Support of 4x100G mode for the 400GBASE ZR transceivers
- Written by Digvijay Gahlot
- Posted on April 20, 2021
- Updated on January 23, 2023
- 11968 Views
The L2 EVPN MPLS feature is available when configuring BGP in the multi-agent routing protocol model. Ethernet VPN (EVPN) is an extension of the BGP protocol introducing a new address family: L2VPN (address family number 25) / EVPN (subsequent address family number 70). It is used to exchange overlay MAC and IP address reachability information between BGP peers.
- Written by Tarun Jaswanth LNU
- Posted on August 24, 2020
- Updated on July 3, 2024
- 24676 Views
802.1X is an IEEE standard protocol that prevents unauthorized devices from gaining access to the network.
- Written by Scarlett Gourley
- Posted on April 20, 2021
- Updated on November 20, 2023
- 8982 Views
This feature supports to upgrade Aboot firmware via an Aboot Update File (AUF). The aim is to be able to provide a signed
- Written by Michael (Mike) Fink
- Posted on December 22, 2017
- Updated on September 25, 2023
- 13634 Views
Filtered Mirroring allows certain packets to be selected for mirroring, rather than all packets ingressing or egressing a particular port.
- Written by Dingtao Yin
- Posted on April 21, 2021
- Updated on April 21, 2021
- 5580 Views
This feature allows for the configuration of the VRF that the BfRuntime server is configured to listen on.
- Written by Joseph Swaminathan
- Posted on April 29, 2021
- Updated on February 5, 2022
- 6228 Views
BGP Add Path TX, or send, allows for a BGP speaker to advertise multiple paths (instead of a single best path) for a
- Written by Gary McCarthy
- Posted on February 8, 2017
- Updated on October 13, 2021
- 7442 Views
The default policy behavior is to permit/accept all routes when a BGP neighbor or peer group is configured with a route
- Written by Vivek Subbarao
- Posted on April 16, 2021
- Updated on April 16, 2021
- 8828 Views
This feature provides the ability to configure the MTU value of fwd devices in a specific vrf or across vrfs. A default
- Written by Bohan Yang
- Posted on March 5, 2020
- Updated on February 1, 2023
- 7517 Views
QSFP+ transceiver supports 40G and 4x10G. This feature provides support for changing the default QSFP mode between
- Written by Gaofeng Yue
- Posted on April 15, 2021
- Updated on April 15, 2021
- 7903 Views
This feature detects duplicate IP addresses configured on the switch already owned by hosts the switch has already
- Written by Greg Poloczek
- Posted on April 16, 2021
- Updated on April 16, 2021
- 6813 Views
In older EOS releases the ingress interface was always included in LAG hash calculations input together with other
- Written by Madhu Sudan
- Posted on April 26, 2021
- Updated on April 26, 2021
- 8519 Views
This feature allows a Data Center (DC) operator to incrementally migrate their VXLAN network from IPv4 to IPv6
- Written by Harshit Gulati
- Posted on May 5, 2021
- Updated on May 5, 2021
- 7904 Views
ALPM (Algorithmic Longest Prefix Management) is a scheme in which the route prefix is split and stored across DEFIP
- Written by Sharad Birmiwal
- Posted on May 25, 2021
- Updated on May 17, 2022
- 12868 Views
The document captures the default preference value (between and 255) for routes from various supported protocols.
- Written by Wade Carpenter
- Posted on April 24, 2020
- Updated on July 15, 2024
- 15383 Views
EVPN MPLS VPWS (RFC 8214) provides the ability to forward customer traffic to / from a given attachment circuit (AC) without any MAC lookup / learning. The basic advantage of VPWS over an L2 EVPN is the reduced control plane signalling due to not exchanging MAC address information. In contrast to LDP pseudowires, EVPN MPLS VPWS uses BGP for signalling. Port based and VLAN based services are supported.
- Written by Chris Hydon
- Posted on April 20, 2021
- Updated on October 25, 2023
- 10181 Views
Multihoming in EVPN allows a single customer edge (CE) to connect to multiple provider edges (PE or tunnel endpoint).
- Written by Edwin Tambi
- Posted on August 19, 2020
- Updated on July 3, 2024
- 19241 Views
EOS supports the ability to match on a single VLAN tag (example: encapsulation dot1q vlan 10) or a VLAN tag pair (example: encapsulation dot1q vlan 10 inner 20) to map matching packets to an interface. In this case, the encapsulation string is considered consumed by the mapped interface before forwarding, which means that the tags are effectively removed from the incoming packet for the purposes of any downstream forwarding.
- Written by Kamlesh Raghuvanshi
- Posted on April 19, 2021
- Updated on August 20, 2024
- 6040 Views
There are use cases where all broadcast, multicast and unknown MAC traffic are not needed to be flooded into the
- Written by Rahul Vasist
- Posted on April 20, 2020
- Updated on January 29, 2024
- 8863 Views
EOS-4.24.0 adds support for hardware-accelerated sFlow on R3 systems. Without hardware acceleration, all sFlow processing is done in software, which means performance is heavily dependent on the capabilities of the host CPU. Aggressive sampling rates also decrease the amount of processing time available for other EOS applications.
- Written by Arpit Bansal
- Posted on December 21, 2020
- Updated on January 17, 2022
- 7848 Views
IGP shortcuts enable traffic to get forwarded along traffic engineered paths computed by RSVP using a modified SPF
- Written by Rajshekhar Biradar
- Posted on May 11, 2021
- Updated on February 6, 2022
- 7079 Views
The Inband Network Telemetry eXport Data (INT XD) feature is used to gather flow, queue, drop telemetry
- Written by Sriram Sellappa
- Posted on January 23, 2019
- Updated on April 21, 2021
- 7468 Views
IPv4 routes of certain prefix lengths can be optimized for enhanced route scale. The feature is described here. This
- Written by Chris Roche
- Posted on April 20, 2020
- Updated on April 26, 2021
- 6676 Views
The IS IS maximum LSP size feature provides the ability to configure the maximum LSP size that the IS IS protocol will
- Written by Jonas Flodin
- Posted on April 26, 2021
- Updated on May 24, 2022
- 6785 Views
4.26.0F adds Latency ANalyZer (LANZ) support to the Arista 7170 series. LANZ monitors the egress queue usage through
- Written by Bharathram Pattabhiraman
- Posted on February 11, 2021
- Updated on June 15, 2022
- 14687 Views
This solution allows the delivery of customer BUM (Broadcast, Unknown unicast and Multicast) traffic in a VLAN using
- Written by VIKAS NARAYANAPPA
- Posted on May 5, 2021
- Updated on April 25, 2023
- 6210 Views
If a network device uses deep packet inspection for load balancing, RFC6790 recommends deployments to use entropy label in LDP to improve load balancing in MPLS networks by providing sufficient entropy in the label stack itself.
- Written by Pedro Coutinho
- Posted on April 16, 2021
- Updated on April 16, 2021
- 6975 Views
The MPLS ping/traceroute utilities were extended in EOS version 4.26.0F to support connectivity checking of BGP
- Written by Tarun Jaswanth LNU
- Posted on April 21, 2021
- Updated on February 7, 2022
- 7154 Views
Media Access Control Security (MACsec) is an industry standard encryption mechanism that protects all traffic
- Written by Manish Singhvi
- Posted on April 16, 2021
- Updated on February 7, 2022
- 7531 Views
Media Access Control Security (MACsec) is an industry standard encryption mechanism that protects all traffic
- Written by Sandeep Betha
- Posted on December 18, 2019
- Updated on December 16, 2021
- 7623 Views
MLDv2 Snooping optimizes the transmission of multicast packets in Layer 2 by using Layer 3 information contained in
- Written by Binoshmon T B
- Posted on July 22, 2020
- Updated on June 27, 2022
- 11382 Views
The TCP MSS clamping feature involves clamping the maximum segment size (MSS) in the TCP header of TCP SYN packets if it exceeds the configured MSS ceiling limit for the interface. Clamping MSS value helps in avoiding IP fragmentation in tunnel scenarios by ensuring that MSS is small enough to accommodate the extra overhead of GRE and tunnel outer IP headers.
- Written by Hyun Chul Chung
- Posted on May 11, 2021
- Updated on July 24, 2024
- 8462 Views
A mDNS Gateway extends the link-local scope of mDNS messages to additional subnets to provide service discovery and domain name resolution over an extended link-local multicast domain. A mDNS gateway can also peer with additional mDNS gateways to extend the logical link-local multicast domain to include directly connected subnets on a mDNS gateway peer.
- Written by Bharathram Pattabhiraman
- Posted on February 11, 2021
- Updated on September 21, 2023
- 23595 Views
This solution allows delivery of multicast traffic in an IP VRF using multicast in the underlay network. It builds on
- Written by Coy Humphrey
- Posted on September 15, 2020
- Updated on June 7, 2024
- 9934 Views
This TOI describes a set of enhancements made to the existing Port Security: Protect Mode (PortSec-Protect) feature. Please see the existing TOI for this feature here:Port Security: Protect Mode
- Written by Padmanabh Ratnakar
- Posted on April 20, 2021
- Updated on July 15, 2024
- 13053 Views
The postcard telemetry (GreenT - GRE Encapsulated Telemetry) feature is used to gather per flow telemetry information like path and per hop latency. For network monitoring and troubleshooting flow related issues, it is desirable to know the path, latency and congestion information for flows at different times.
- Written by Eudean Sun
- Posted on August 28, 2019
- Updated on November 3, 2021
- 7110 Views
Power over Ethernet (PoE) is a way of delivering power and data over the same Ethernet wires. There have been multiple
- Written by Simon Eteen
- Posted on May 9, 2022
- Updated on September 16, 2024
- 6504 Views
The`ptp forward-v1` command configures the switch to forward Precision Time Protocol version 1 packets as regular multicast traffic. By default, when PTP is enabled and PTPv1 packets are received on the PTP enabled interfaces, these packets are trapped by the CPU, logged and discarded. The feature is already supported on various Arista platforms, this article highlights added support on the 7280R/7280R2/7020R/7500R/7500R2 platforms in EOS 4.26.0F and on the 7280R3/7500R3/7800R3/7289 platforms in EOS 4.29.0F. It highlights some differences in support for 7280/7500/7800 R/R2 platforms versus 7280/7500/7800 R3 platforms.
- Written by Girish Dasari
- Posted on May 11, 2021
- Updated on May 11, 2021
- 6539 Views
IS IS adjacency is not formed between devices with different address families configured. For example, a router
- Written by Haotian Zhang
- Posted on June 4, 2020
- Updated on May 31, 2024
- 8163 Views
This article describes the support for Filtered Mirroring using security ACL. The user can selectively mirror packets based on the statement in the configured IPv4, IPv6 or MAC ACL.
- Written by David Cronin
- Posted on April 15, 2021
- Updated on April 15, 2021
- 7508 Views
In EOS, BGP creates different update groups based on the outbound configuration. Different route maps or Routing
- Written by Phil Whineray
- Posted on December 17, 2020
- Updated on April 26, 2021
- 7523 Views
All electronic devices are subject to interference from cosmic radiation. Arista products use a combination of
- Written by Abbas Abou Daya
- Posted on April 15, 2021
- Updated on April 15, 2021
- 7337 Views
When an interface is overloaded with packets and goes beyond its buffering capabilities, packet drops become
- Written by Romanos Skiadas
- Posted on April 22, 2021
- Updated on April 22, 2021
- 6713 Views
This feature adds support for streaming the output of the following show command in Octa:. The
- Written by Christopher Brown
- Posted on April 19, 2021
- Updated on April 21, 2021
- 6322 Views
RFC4191 describes an optional extension to Router Advertisement messages for communicating default router
- Written by Wenyi Cheng
- Posted on April 19, 2021
- Updated on July 19, 2023
- 8380 Views
This feature adds TLS support to the existing syslog logging mechanism. With the new added CLI commands, the user can
- Written by Anirudh Ramesh Iyer
- Posted on May 5, 2021
- Updated on July 19, 2024
- 16763 Views
This article describes how to customize TCAM ( Ternary Content Addressable Memory ) lookup for each feature which uses TCAM.
- Written by Swaroop George
- Posted on April 15, 2021
- Updated on February 19, 2024
- 7473 Views
This feature allows selecting Differentiated Services Code Point (DSCP) and Traffic Class (TC) values for packets at VTEPs along VXLAN encapsulation and decapsulation directions respectively. DSCP is a field in IP Header and TC is a tag associated with a packet within the switch, both influence the Quality of Service the packet receives. This feature can be enabled via configuration as explained later in this document.
- Written by Ravikumar Chandrasekaran
- Posted on April 16, 2021
- Updated on April 16, 2021
- 5872 Views
This feature allows remote VTEP Tunnels to be routed over L3 SubInterfaces. DCS 7050SX3. Release.