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. 

Filtered Mirroring allows certain packets to be selected for mirroring, rather than all packets ingressing or egressing a particular port.

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.

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.

This feature adds support for a dynamic configuration model to eliminate the need for the network administrator to

The default policy behavior is to permit/accept all routes when a BGP neighbor or peer group is configured with a route

Sflow samples can be augmented with additional Extended gateway data by getting data from BGP in addition to

This feature allows failover to the 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.

The CPU CoS mapping feature can only be configured on physical routed interfaces. No other interface types including

MPLS LDP traceroute utility has now been extended to support multipath traceroute. This allows network

QSFP+ transceiver supports 40G and 4x10G. This feature provides support for changing the default QSFP mode between

In the Centralized Anycast Gateway configuration, the Spines are configured with EVPN IRB and are used as the IP

This feature adds control plane support for inter subnet forwarding between EVPN and IPVPN networks. It also

In EOS 4.22.0F, EVPN VXLAN all active multi homing L2 support is available. A customer edge (CE) device can connect to

This feature enables support for an EVPN VxLAN control plane in conjunction with Arista’s OpenStack ML2 plugin for

Fastdrop static is a feature that allows the static multicast routing agent to respond to cache miss messages and

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.

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.

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.

IP Locking is an EOS feature configured on an Ethernet Layer 2 port.  When enabled, it ensures that a port will only

This article describes the support for specifying DSCP mask in IPv4 access list. DSCP mask can be used to match

Segment Routing provides mechanism to define end-to-end paths within a topology by encoding paths as sequences of sub-paths or instructions. These sub-paths or instructions are referred to as “segments”. IS-IS Segment Routing (henceforth referred to as IS-IS SR) provides means to advertise such segments through IS-IS protocol.

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.

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.

This feature enables MACsec service for non MACsec capable front panel ports. MACsec over front panel port is

This article describes speed configuration for the management SFP port. DCS 7300 SUP2. DCS 7300 SUP2 D

This feature allows classification of packets based on the inner VLAN value along with the VLAN and CoS bits in a double tagged packet.

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.

This feature allows the removal of a configurable number of leading bytes from packets sent to a monitor session. A new

Normally, Multiprotocol Label Switching (MPLS) determines the packet forwarding destination based on the top most

On DCS 7280E, DCS 7500E, DCS 7280R, DCS 7500R, DCS 7020R, DCS 7280R2, DCS 7500R2 systems, it is possible to select

Prior to EOS 4.23.2F, BGP missing policy action configuration is a global BGP configuration that, when set to deny,

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. 

Policy Control Service (PCS) is the integration of Arista CVX and VMWare NSX T to enable NSX T managed networks to

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.

This article describes the support for specifying User Defined Fields(UDF) in Port ACLs including IPv4, IPv6, and

Power over Ethernet (PoE) is a way of delivering power and data over the same Ethernet wires. There have been multiple

This feature allows routes that were leaked from one VRF (the source VRF) into another VRF (the destination VRF) using

This feature allows a Service Provider (SP) or an Enterprise to provide the service of interconnecting

This feature provides support for advertising IPv4 unicast Network Layer Reachability Information (NLRI) with

This feature adds support for ‘match interface’ clause under route map config for Bgp policy application in

This document describes a new CLI command to help debug how and why route maps permit and deny paths. The aim of this CLI

RSVP-TE applies the Resource Reservation Protocol (RSVP) for Traffic Engineering (TE), i.e., to distribute MPLS labels for steering traffic and reserving bandwidth.

These are the release notes and configuration guide for the OpenConfig feature in the 4.21.0F release.

4.23.2F release supports reading and streaming various OpenConfig configuration and state models over gNMI (gRPC

When a high speed serial communication link is established, the two ends communicate with each other over a

A secure erase is generally defined as a command (or set of commands) that deliberately, permanently and

The Tap Aggregation timestamping feature supports both timestamping packets in TAI (International Atomic Time)

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.

This document describes the support of VxLAN Bridging and Routing on the R3 series of DCS 7280, 7500 and 7800 Arista