- Written by Radu Handolescu
- Posted on October 14, 2021
- Updated on October 18, 2021
- 979 Views
The 400GBASE ZRP (also known as ZR+) is a transceiver that follows the OpenZR+ MSA (Multi Source Agreement)
- Written by Sachin Subramanya
- Posted on September 1, 2021
- Updated on September 1, 2021
- 745 Views
Starting with 4.26.2F the platform default traffic class (TC) to network qos will be configurable via a CLI. The
- 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 Qin Zhang
- Posted on May 21, 2019
- Updated on September 5, 2019
- 1249 Views
BGP Monitoring Protocol (BMP) allows a monitoring station to connect to a router and collect all of the BGP
- Written by Paulo Panhoto
- Posted on September 3, 2021
- Updated on September 3, 2021
- 764 Views
The route reflector, as described in RFC 4456, is a router allowed to advertise (reflect) iBGP learned routes to other
- Written by Ayush Mittal
- Posted on September 6, 2021
- Updated on September 6, 2021
- 720 Views
Routing changes in BGP can be caused by planned maintenance Operations. GRACEFUL SHUTDOWN community allows
- Written by Kumar Narayanan
- Posted on September 2, 2021
- Updated on September 2, 2021
- 842 Views
Dynamic Path Selection (DPS) feature selects a path to deliver customer traffic to the destination that meets or
- Written by Emil Maric
- Posted on September 1, 2021
- Updated on September 1, 2021
- 767 Views
In order for forwarding equivalence classes (FECs) to get programmed in the ASIC, they must have some form of a
- Written by Edwin Tambi
- Posted on August 19, 2020
- Updated on June 23, 2022
- 2470 Views
EOS supports the ability to match on a single VLAN tag (via encapsulation dot1q vlan 10) or a VLAN tag pair (via
- Written by Sudheer Y R
- Posted on October 9, 2018
- Updated on March 30, 2022
- 4052 Views
This feature introduces the hardware forwarding support for IPv4 over IPv4, GRE Tunnel interfaces on Arista
- Written by Thomas Altenburger
- Posted on January 20, 2022
- Updated on April 13, 2022
- 925 Views
NAT (Network Address Translation) is a feature that allows each packet's addresses to be rewritten according to the
- Written by Padmanabh Ratnakar
- Posted on October 7, 2021
- Updated on June 24, 2022
- 1823 Views
For network monitoring and troubleshooting flow related issues, it is desirable to know the path, latency, queue and congestion information for flows at different times. The inband telemetry feature(INT), based on Inband Flow Analyzer RFC draft -IFA 2.0, is used to gather per flow telemetry information like path, per hop latency and congestion. INT is supported for both IPv4 and IPv6 traffic.
- Written by Ramakrishnan G
- Posted on September 6, 2021
- Updated on September 6, 2021
- 702 Views
IPv6 routes of certain prefix lengths can be optimized for enhanced route scale on R3. This TOI explains the usage of
- Written by Prakrati Vidyarthi
- Posted on August 16, 2018
- Updated on February 5, 2022
- 2479 Views
Normally, a switch traps L2 protocol frames to the CPU. However, certain use cases may require these frames to be
- Written by Sean Hope
- Posted on May 8, 2020
- Updated on September 21, 2021
- 1118 Views
MAP T is a double stateless NAT64 translation technology. It allows an internet service provider to share IPv4
- Written by Nanda Kurella
- Posted on September 5, 2021
- Updated on September 17, 2021
- 670 Views
This feature allows classification of packets based on the inner CoS value in a double tagged packet.
- Written by Arup Raton Roy
- Posted on September 7, 2021
- Updated on September 21, 2021
- 826 Views
Macro Segmentation Service with Layer 3 firewall (MSS FW) enforces all security policies bi directionally by
- Written by Suresh Nalagatla
- Posted on September 16, 2021
- Updated on September 21, 2021
- 1133 Views
Multicast EVPN IRB solution allows for the delivery of customer BUM (Broadcast, Unknown unicast and Multicast)
- Written by Nicholas Cheng
- Posted on September 2, 2021
- Updated on September 2, 2021
- 664 Views
A router keeps track of the total number of LSAs for each OSPFv3 instance. The LSA Limit feature provides a mechanism to
- Written by Ethan Vadai
- Posted on March 6, 2020
- Updated on June 16, 2022
- 2289 Views
Policy based routing (PBR) is a feature that is applied on routable ports, to preferentially route packets.
- Written by Padmanabh Ratnakar
- Posted on April 20, 2021
- Updated on February 6, 2022
- 1966 Views
The postcard telemetry(GreenT GRE Encapsulated Telemetry) feature is used to gather per flow telemetry
- Written by Shyam Kota
- Posted on September 2, 2021
- Updated on September 2, 2021
- 677 Views
Line cards, fabric cards, and switch cards now alert the user whenever a card consumes excessive power. There are
- Written by Rohit Maurya
- Posted on June 21, 2021
- Updated on June 24, 2022
- 1768 Views
Private VLAN is a feature that segregates a regular VLAN broadcast domain while maintaining all ports in the same IP
- Written by Prakhar Rastogi
- Posted on September 2, 2021
- Updated on September 2, 2021
- 769 Views
RADIUS over TLS provides secure and reliable transport for RADIUS clients. RADIUS over TLS allows RADIUS
- Written by Sharad Birmiwal
- Posted on November 4, 2020
- Updated on February 11, 2022
- 4404 Views
Routing control functions (RCF) is a new language that can be used to express BGP route filtering and attribute
- Written by Martin Stigge
- Posted on September 16, 2020
- Updated on January 11, 2022
- 1450 Views
RSVP TE, the Resource Reservation Protocol (RSVP) for Traffic Engineering (TE), is used to distribute MPLS labels
- Written by Joel Katticaran
- Posted on September 1, 2021
- Updated on November 10, 2021
- 755 Views
This feature extends the existing functionality to set explicit next hop addresses for vpn ipv4 and vpn ipv6 routes.
- Written by Augusto Wong
- Posted on September 1, 2021
- Updated on September 1, 2021
- 789 Views
This feature adds a SNMP CLI knob to allow an interface’s speed, as shown in IF MIB, to reflect its shaped bandwidth.
- Written by John Foley
- Posted on January 20, 2022
- Updated on January 20, 2022
- 664 Views
Starting with 4.26.2F it is possible to assign costs to Shared Risk Link Groups (SRLGs) which will be taken into
- Written by Venkata Kishore Madhbhaktula
- Posted on September 1, 2021
- Updated on September 17, 2021
- 926 Views
This TOI describes details and limitations of Stateful Switchover on Modular chassis with 7500R3 based line cards.
- Written by Joshua Portelance
- Posted on September 6, 2021
- Updated on January 24, 2022
- 671 Views
Sub second switchcard failover is a redundancy mode available on systems with two switchcards. One switchcard is the
- Written by Eamon Doyle
- Posted on September 3, 2021
- Updated on September 5, 2021
- 694 Views
BGP address aggregation was previously only supported for IPv4 and IPv6 unicast address families. Equivalent BGP
- Written by Corentin Le Bigot
- Posted on September 5, 2021
- Updated on September 21, 2021
- 701 Views
Hardware accelerated NAT for transit fragmented traffic is enabled by default. It’s important to note that
- Written by Nik Zaborovskii
- Posted on December 8, 2020
- Updated on September 9, 2021
- 1309 Views
Multicast NAT is a feature that performs NAT translations on multicast traffic. It can be configured under SVIs,
- Written by Zhen Xue
- Posted on September 2, 2021
- Updated on January 17, 2022
- 1208 Views
From the Precision Time Protocol (PTP) perspective, Multi Chassis Link Aggregation (MLAG) peers are two physical
- Written by Shyam Kota
- Posted on September 7, 2021
- Updated on November 2, 2021
- 1053 Views
This feature extends the capabilities of Tap Aggregation traffic steering to allow for using traffic policies.
- Written by Muhammad Yousuf
- Posted on September 9, 2021
- Updated on April 22, 2022
- 1130 Views
This TOI supplements the Ingress Traffic Policy applied on ingress interfaces. Please refer to that document for a description of Traffic Policies and field-sets. This TOI explains the Traffic Policies as applied in the egress direction on interfaces
- Written by Prateek Mali
- Posted on August 19, 2020
- Updated on June 21, 2022
- 2961 Views
Access Control Lists (ACL) use packet classification to mark certain packets going through the packet processor pipeline and then take configured action against them. Rules are defined based on various fields of packets and usually TCAM is used to match packets to rules.
- Written by Travis Hammond
- Posted on September 21, 2021
- Updated on March 17, 2022
- 998 Views
Timestamping is an important tool for network engineering and performance analysis. The timestamp can be applied to
- Written by Radu Handolescu
- Posted on September 17, 2021
- Updated on September 17, 2021
- 813 Views
Common Management Interface Specification (CMIS) compliant transceivers are configured by selecting an
- Written by Lavanya Conjeevaram
- Posted on September 11, 2017
- Updated on September 7, 2021
- 1397 Views
Unidirectional links is a feature that configures an Ethernet interface transmit and receive paths to be
- Written by Simon Liang
- Posted on September 5, 2021
- Updated on January 31, 2022
- 836 Views
This document describes the VRF selection policy and VRF fallback feature. A VRF selection policy contains match
- Written by Terence Hui
- Posted on September 1, 2021
- Updated on September 1, 2021
- 853 Views
Current VXLAN decapsulation logic requires the following hits on affected switches listed in the following