- Written by Neil Jarvis
- Posted on 3月 6, 2020
- Updated on 10月 27, 2022
- 5119 Views
Ingress policing provides the ability to monitor the data rates for a particular class of traffic and perform action when traffic exceeds user-configured values. This allows users to control ingress bandwidth based on packet classification. Ingress policing is done by a policing meter which marks incoming traffic and performs actions based on the results of policing meters.
- Written by Michael (Mike) Fink
- Posted on 12月 22, 2017
- Updated on 9月 25, 2023
- 9488 Views
Filtered Mirroring allows certain packets to be selected for mirroring, rather than all packets ingressing or egressing a particular port.
- Written by Vipul Shah
- Posted on 3月 13, 2020
- Updated on 5月 4, 2022
- 4403 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 Vivek Subbarao
- Posted on 1月 18, 2019
- Updated on 2月 14, 2022
- 4293 Views
This feature adds support for a dynamic configuration model to eliminate the need for the network administrator to
- Written by Gary McCarthy
- Posted on 2月 8, 2017
- Updated on 10月 13, 2021
- 3496 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 Bill Conner
- Posted on 3月 12, 2020
- Updated on 3月 12, 2020
- 3340 Views
Sflow samples can be augmented with additional Extended gateway data by getting data from BGP in addition to
- Written by Chetan Patel
- Posted on 3月 24, 2020
- Updated on 9月 20, 2023
- 4366 Views
This feature allows failover to backup path to occur in constant time per interface going down for features such as RSVP link protection, RSVP node protection, TI-LFA link protection, and BGP PIC. Without this feature enabled, it would take time proportional to the number of paths going over the interface experiencing the link down event to failover to the backup path. With this feature enabled, the failover time would be constant regardless of the number of paths.
- Written by Shyam Kota
- Posted on 3月 12, 2020
- Updated on 3月 12, 2020
- 2783 Views
The CPU CoS mapping feature can only be configured on physical routed interfaces. No other interface types including
- Written by Rafat Mahmud
- Posted on 3月 6, 2020
- Updated on 3月 6, 2020
- 3086 Views
MPLS LDP traceroute utility has now been extended to support multipath traceroute. This allows network
- Written by Bohan Yang
- Posted on 3月 5, 2020
- Updated on 2月 1, 2023
- 3713 Views
QSFP+ transceiver supports 40G and 4x10G. This feature provides support for changing the default QSFP mode between
- Written by Alton Lo
- Posted on 3月 18, 2020
- Updated on 3月 18, 2020
- 10778 Views
In the Centralized Anycast Gateway configuration, the Spines are configured with EVPN IRB and are used as the IP
- Written by Jeffrey Nelson
- Posted on 3月 5, 2020
- Updated on 7月 31, 2023
- 5754 Views
This feature adds control plane support for inter subnet forwarding between EVPN and IPVPN networks. It also
- Written by Xuan Qi
- Posted on 3月 13, 2020
- Updated on 3月 13, 2020
- 6379 Views
In EOS 4.22.0F, EVPN VXLAN all active multi homing L2 support is available. A customer edge (CE) device can connect to
- Written by Mitchell Jameson
- Posted on 2月 5, 2020
- Updated on 2月 5, 2020
- 3493 Views
This feature enables support for an EVPN VxLAN control plane in conjunction with Arista’s OpenStack ML2 plugin for
- Written by Max Xiao
- Posted on 3月 6, 2020
- Updated on 3月 6, 2020
- 3096 Views
Fastdrop static is a feature that allows the static multicast routing agent to respond to cache miss messages and
- Written by Evelyn Wang
- Posted on 3月 5, 2020
- Updated on 1月 3, 2023
- 4040 Views
The FEC (= Forward Error Correction) traffic analyzer is designed to estimate the performance of the FEC layer, identify error statistics, and the source of correlated errors on physical interfaces.
- Written by James Shephard
- Posted on 3月 6, 2020
- Updated on 7月 12, 2023
- 3108 Views
Forwarding destination prediction enables visibility into how a packet is forwarded through the switch, allowing you to determine which interface(s) a packet would egress out of. This feature has been expanded upon with support for packets specified as a byte stream, allowing you to fully specify the packet.
- Written by Deepak Sebastian
- Posted on 11月 12, 2019
- Updated on 6月 5, 2023
- 4252 Views
This feature adds support for offloading BFD Transmit path to hardware (ASIC) for specific types of BFD sessions. This will improve accuracy of transmit timer implementations for BFD (especially with fast timers like 50 ms) and relieve pressure on the main CPU in scenarios of scale.
- Written by William Jung
- Posted on 3月 11, 2020
- Updated on 4月 20, 2020
- 4089 Views
IP Locking is an EOS feature configured on an Ethernet Layer 2 port. When enabled, it ensures that a port will only
- Written by Phillip Jie
- Posted on 3月 6, 2020
- Updated on 3月 6, 2020
- 2913 Views
This article describes the support for specifying DSCP mask in IPv4 access list. DSCP mask can be used to match
- Written by Navneet Sinha
- Posted on 6月 29, 2016
- Updated on 1月 11, 2023
- 6712 Views
IS IS SR feature provides knobs to configure various types of segments which are distributed as part of IS IS LSPs (Link
- Written by Nathan Wolfe
- Posted on 2月 15, 2018
- Updated on 6月 1, 2023
- 5695 Views
Introduced in EOS-4.20.1F, “selectable hashing fields” feature controls whether a certain header’s field is used in the hash calculation for LAG and ECMP.
- Written by Zackary Ayoun
- Posted on 5月 23, 2022
- Updated on 7月 19, 2023
- 3973 Views
LANZ is the EOS Latency and congestion ANalyZer. On DCS-7280, DCS-7020, DCS-7500 and DCS-7800 series, it allows monitoring congestion and transmit latencies on both front panel and CPU ports.
- Written by Sambath Kumar Balasubramanian
- Posted on 3月 12, 2020
- Updated on 5月 7, 2020
- 4679 Views
This feature enables MACsec service for non MACsec capable front panel ports. MACsec over front panel port is
- Written by Mark Lisee
- Posted on 3月 6, 2020
- Updated on 3月 6, 2020
- 2980 Views
This article describes speed configuration for the management SFP port. DCS 7300 SUP2. DCS 7300 SUP2 D
- Written by Mattar Amith Kini
- Posted on 3月 6, 2020
- Updated on 7月 6, 2022
- 3479 Views
This feature allows classification of packets based on the inner VLAN value along with the VLAN and CoS bits in a double tagged packet.
- Written by Abdul Haseeb Jehangir
- Posted on 3月 12, 2020
- Updated on 8月 24, 2023
- 3811 Views
Mirror on drop is a network visibility feature which allows monitoring of MPLS or IP flow drops occurring in the ingress pipeline. When such a drop is detected, it is sent to the control plane where it is processed and then sent to configured collectors. Additionally, CLI show commands provide general and detailed statistics and status.
- Written by Travis Hammond
- Posted on 3月 6, 2020
- Updated on 3月 6, 2020
- 2823 Views
This feature allows the removal of a configurable number of leading bytes from packets sent to a monitor session. A new
- Written by Simon Liang
- Posted on 6月 10, 2019
- Updated on 3月 13, 2020
- 3090 Views
Normally, Multiprotocol Label Switching (MPLS) determines the packet forwarding destination based on the top most
- Written by Jacob Sword
- Posted on 3月 6, 2020
- Updated on 3月 6, 2020
- 3619 Views
On DCS 7280E, DCS 7500E, DCS 7280R, DCS 7500R, DCS 7020R, DCS 7280R2, DCS 7500R2 systems, it is possible to select
- Written by Yuanzhi Gao
- Posted on 3月 6, 2020
- Updated on 3月 6, 2020
- 2977 Views
Prior to EOS 4.23.2F, BGP missing policy action configuration is a global BGP configuration that, when set to deny,
- Written by Kushagra Mohan
- Posted on 3月 18, 2020
- Updated on 7月 21, 2023
- 3645 Views
This feature enables per port TC-To-COS mapping, where TC represents Traffic-Class and COS represents Vlan tag PCP bits. While at present there is a global TC-To-COS mapping, we can use the TC-To-COS feature to create custom profiles which can be applied to the required interfaces.
- Written by Vivek Subbarao
- Posted on 3月 9, 2020
- Updated on 7月 8, 2020
- 3767 Views
Policy Control Service (PCS) is the integration of Arista CVX and VMWare NSX T to enable NSX T managed networks to
- Written by Ethan Vadai
- Posted on 3月 6, 2020
- Updated on 6月 23, 2023
- 7682 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 Phillip Jie
- Posted on 12月 19, 2019
- Updated on 2月 5, 2022
- 4170 Views
This article describes the support for specifying User Defined Fields(UDF) in Port ACLs including IPv4, IPv6, and
- Written by Eudean Sun
- Posted on 3月 9, 2020
- Updated on 4月 26, 2021
- 3384 Views
Power over Ethernet (PoE) is a way of delivering power and data over the same Ethernet wires. There have been multiple
- Written by Ruhi Saraf
- Posted on 3月 18, 2020
- Updated on 3月 18, 2020
- 3510 Views
This feature allows routes that were leaked from one VRF (the source VRF) into another VRF (the destination VRF) using
- Written by Ram Prasad
- Posted on 10月 22, 2018
- Updated on 10月 19, 2021
- 5307 Views
This feature allows a Service Provider (SP) or an Enterprise to provide the service of interconnecting
- Written by Akshay Kawale
- Posted on 3月 11, 2020
- Updated on 3月 11, 2020
- 5568 Views
This feature provides support for advertising IPv4 unicast Network Layer Reachability Information (NLRI) with
- Written by Deeksha Srivastava
- Posted on 3月 12, 2020
- Updated on 3月 16, 2020
- 3123 Views
This feature adds support for ‘match interface’ clause under route map config for Bgp policy application in
- Written by David Cronin
- Posted on 8月 26, 2019
- Updated on 10月 25, 2021
- 3747 Views
This document describes a new CLI command to help debug how and why route maps permit and deny paths. The aim of this CLI
- Written by Martin Stigge
- Posted on 10月 22, 2018
- Updated on 8月 24, 2023
- 4865 Views
RSVP TE applies the Resource Reservation Protocol (RSVP) for Traffic Engineering (TE), i.e., to distribute MPLS
- Written by Jason Shamberger
- Posted on 3月 11, 2020
- Updated on 8月 23, 2023
- 7742 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 Michael Sparacio
- Posted on 8月 16, 2018
- Updated on 6月 20, 2019
- 3616 Views
These are the release notes and configuration guide for the OpenConfig feature in the 4.21.0F release.
- Written by Aparna Karanjkar
- Posted on 3月 13, 2020
- Updated on 3月 13, 2020
- 4011 Views
4.23.2F release supports reading and streaming various OpenConfig configuration and state models over gNMI (gRPC
- Written by John Nelson
- Posted on 3月 5, 2020
- Updated on 3月 5, 2020
- 3390 Views
When a high speed serial communication link is established, the two ends communicate with each other over a
- Written by Alon Pekurovsky
- Posted on 3月 5, 2020
- Updated on 6月 16, 2022
- 4318 Views
A secure erase is generally defined as a command (or set of commands) that deliberately, permanently and
- Written by Anais Taing
- Posted on 3月 13, 2020
- Updated on 7月 21, 2023
- 3594 Views
The Tap Aggregation timestamping feature supports both timestamping packets in TAI (International Atomic Time)
- Written by Vipul Shah
- Posted on 8月 27, 2019
- Updated on 6月 24, 2022
- 3963 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 Anil Joshi
- Posted on 3月 13, 2020
- Updated on 3月 13, 2020
- 3071 Views
This document describes the support of VxLAN Bridging and Routing on the R3 series of DCS 7280, 7500 and 7800 Arista