- Written by Radu Handolescu
- Posted on 10月 14, 2021
- Updated on 10月 18, 2021
- 3846 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 9月 1, 2021
- Updated on 9月 1, 2021
- 2806 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 8月 24, 2020
- Updated on 9月 21, 2023
- 12082 Views
802.1X is an IEEE standard protocol that prevents unauthorized devices from gaining access to the network.
- Written by Qin Zhang
- Posted on 5月 21, 2019
- Updated on 9月 5, 2019
- 3986 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 9月 3, 2021
- Updated on 9月 3, 2021
- 3117 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 9月 6, 2021
- Updated on 9月 6, 2021
- 2777 Views
Routing changes in BGP can be caused by planned maintenance Operations. GRACEFUL SHUTDOWN community allows
- Written by Kumar Narayanan
- Posted on 9月 2, 2021
- Updated on 9月 2, 2021
- 3683 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 9月 1, 2021
- Updated on 9月 1, 2021
- 2993 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 8月 19, 2020
- Updated on 9月 4, 2023
- 8838 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 Sudheer Y R
- Posted on 10月 9, 2018
- Updated on 6月 13, 2023
- 10310 Views
This feature introduces the hardware forwarding support for IPv4 over IPv4, GRE Tunnel interfaces on Arista
- Written by Thomas Altenburger
- Posted on 1月 20, 2022
- Updated on 4月 13, 2022
- 3930 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 10月 7, 2021
- Updated on 3月 29, 2023
- 6102 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 and IFA 1.0(on some platforms) , 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 9月 6, 2021
- Updated on 3月 16, 2023
- 2922 Views
IPv6 routes of certain prefix lengths can be optimized for enhanced route scale on R3. This TOI explains the usage of these optimizations.
- Written by Prakrati Vidyarthi
- Posted on 8月 16, 2018
- Updated on 9月 8, 2023
- 7253 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.
- Written by Sean Hope
- Posted on 5月 8, 2020
- Updated on 9月 21, 2021
- 3806 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 9月 5, 2021
- Updated on 9月 17, 2021
- 2559 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 9月 7, 2021
- Updated on 9月 21, 2021
- 3201 Views
Macro Segmentation Service with Layer 3 firewall (MSS FW) enforces all security policies bi directionally by
- Written by Suresh Nalagatla
- Posted on 9月 16, 2021
- Updated on 9月 21, 2021
- 4461 Views
Multicast EVPN IRB solution allows for the delivery of customer BUM (Broadcast, Unknown unicast and Multicast)
- Written by Nicholas Cheng
- Posted on 9月 2, 2021
- Updated on 9月 2, 2021
- 2815 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 3月 6, 2020
- Updated on 6月 23, 2023
- 7570 Views
Policy-based routing (PBR) is a feature that is applied on routable ports, to preferentially route packets. Forwarding is based on a policy that is enforced at the ingress of the applied interface and overrides normal routing decisions. In addition to matches on regular ACLs, PBR policy-maps can also include “raw match” statements that look like a single entry of an ACL as a convenience for users.
- Written by Padmanabh Ratnakar
- Posted on 4月 20, 2021
- Updated on 9月 21, 2023
- 6448 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 Shyam Kota
- Posted on 9月 2, 2021
- Updated on 9月 2, 2021
- 2780 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 6月 21, 2021
- Updated on 7月 13, 2022
- 6164 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 9月 2, 2021
- Updated on 1月 10, 2023
- 3312 Views
RADIUS over TLS provides secure and reliable transport for RADIUS clients. RADIUS over TLS allows RADIUS
- Written by Sharad Birmiwal
- Posted on 11月 4, 2020
- Updated on 2月 11, 2022
- 9007 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 9月 16, 2020
- Updated on 1月 11, 2022
- 4394 Views
RSVP TE, the Resource Reservation Protocol (RSVP) for Traffic Engineering (TE), is used to distribute MPLS labels
- Written by Joel Katticaran
- Posted on 9月 1, 2021
- Updated on 11月 10, 2021
- 2984 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 9月 1, 2021
- Updated on 9月 1, 2021
- 3234 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 1月 20, 2022
- Updated on 1月 20, 2022
- 2744 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 9月 1, 2021
- Updated on 9月 17, 2021
- 3567 Views
This TOI describes details and limitations of Stateful Switchover on Modular chassis with 7500R3 based line cards.
- Written by Joshua Portelance
- Posted on 9月 6, 2021
- Updated on 1月 24, 2022
- 2793 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 9月 3, 2021
- Updated on 9月 5, 2021
- 2752 Views
BGP address aggregation was previously only supported for IPv4 and IPv6 unicast address families. Equivalent BGP
- Written by Corentin Le Bigot
- Posted on 9月 5, 2021
- Updated on 9月 21, 2021
- 2991 Views
Hardware accelerated NAT for transit fragmented traffic is enabled by default. It’s important to note that
- Written by Nik Zaborovskii
- Posted on 12月 8, 2020
- Updated on 9月 9, 2021
- 4306 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 9月 2, 2021
- Updated on 7月 19, 2023
- 4336 Views
From the Precision Time Protocol (PTP) perspective, Multi Chassis Link Aggregation (MLAG) peers are two physical
- Written by Shyam Kota
- Posted on 9月 7, 2021
- Updated on 7月 19, 2023
- 3803 Views
This feature extends the capabilities of Tap Aggregation traffic steering to allow for using traffic policies.
- Written by Muhammad Yousuf
- Posted on 9月 9, 2021
- Updated on 7月 20, 2023
- 3767 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 8月 19, 2020
- Updated on 8月 31, 2023
- 9775 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 9月 21, 2021
- Updated on 9月 8, 2023
- 4579 Views
Timestamping is an important tool for network engineering and performance analysis. The timestamp can be applied to a packet as either an inserted header or replacing the source MAC address of the original packet. Timestamps are recorded on ingress and applied on egress.
- Written by Radu Handolescu
- Posted on 9月 17, 2021
- Updated on 9月 17, 2021
- 3136 Views
Common Management Interface Specification (CMIS) compliant transceivers are configured by selecting an
- Written by Lavanya Conjeevaram
- Posted on 9月 11, 2017
- Updated on 9月 7, 2021
- 4160 Views
Unidirectional links is a feature that configures an Ethernet interface transmit and receive paths to be
- Written by Simon Liang
- Posted on 9月 5, 2021
- Updated on 7月 11, 2023
- 3746 Views
This document describes the VRF selection policy and VRF fallback feature. A VRF selection policy contains match rules that specify certain criteria (e.g. DSCP, IP protocol) as well as a resulting action to select a VRF in which to do the FIB lookup.
- Written by Terence Hui
- Posted on 9月 1, 2021
- Updated on 7月 14, 2022
- 3185 Views
Current VXLAN decapsulation logic requires the following hits on affected switches listed in the following