EOS 4.23.0F TOI

This feature adds support in AAA using the LDAP protocol. LDAP can be used for authentication and

ASU (or Accelerated Software Upgrade) is a feature that will minimize traffic loss when upgrading from one ASU

This document explains how to configure and deploy Arista MSS with Check Point Software Technologies firewalls

This feature implements support for RFC8203/BIS so that users can attach the reason of BGP instance or peer session

On most PHYs, we run a sequence of steps in order to bring the links up reliably, because of it’s conservative nature,

In previous software releases, some interfaces on DCS 7260CX3 behaved differently from normal interfaces. When

In VXLAN EVPN deployments, a distributed anycast address is often used as the gateway address for end devices connected to the Vxlan Tunnel End Points (VTEPs). Similarly, in MLAG configurations in a VXLAN environment, ip address virtual could be used on both MLAG peers.

Support for DHCPv4 (RFC 2131)  and DHCPv6 Server (RFC 8415) was added to EOS-4.22.1 and EOS-4.23.0 respectively. EOS DHCP server leverages ISC Kea as backend. The router with DHCP Server enabled acts as a server that allocates and delivers network addresses with desired configuration parameters to its hosts.

DirectFlow runs alongside the existing layer 2/3 forwarding plane, enabling a network architecture that

DirectFlow is a feature that allows the user to steer traffic by matching on packet headers and/or metadata using the

The differentiated services code point (DSCP) is a 6 bit field in the IP header, which can be used to mark traffic for

ECMP Hash visibility CLI determines the output interface for an ECMP set based on the flow parameters supplied by the user. Ingress interface, source IP address, destination IP address and IP protocol are the required parameters. L4 source and destination ports and VLAN identifier are optional, but should be specified if the packet has them.

This article describes the support for Egress Filtered Mirroring. The user can selectively mirror egress packets

Allows user to use the CLI to configure whether or not ACL failures cause a port to become errdisabled. The default

As described in the Multi-VTEP MLAG TOI, singly connected hosts can lead to suboptimal peer-link utilization. By adding a local VTEP to each MLAG peer, the control plane is able to advertise singly connected hosts as being directly behind a specific local VTEP / MLAG peer.

This feature enables support for Macro Segmentation Service (MSS) to insert security devices into the traffic path

Starting with EOS release 4.22.0F, the EVPN VXLAN L3 Gateway using EVPN IRB supports routing traffic from one IPV6

This is an addendum to the “IP in IP decapsulation” document.When GRE decapsulation is configured using decap groups, incoming packets with an outer IP header having IPProto=47 (GRE) and a destination IP that matches the configured value will be decapsulated. This means that the outer IP and GRE headers will be removed from the packet, and all subsequent decisions will be based on the inner IP header.

An introduction to Nexthop-groups can be seen in the Nexthop-Group section of eos.With this feature, IP packets matching a static Nexthop-Group route can be encapsulated with a GRE tunnel and forwarded.

This feature introduces hardware forwarding support for IPv4 over IPv4 GRE tunnel interfaces on selected Arista

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.

Arista campus switches allow extensive and fine grained hardware based flow tracking and management features. They

Hitless speed change enables changing the configured speed on one interface without impacting traffic on any of the

This feature provides support for per-interface ingress/egress packet/byte counters for both IPv4 and IPv6.

In a typical switch deployment, multiple ports can have the same configuration, such as description and access VLAN.

This features adds industry standard “unnumbered” interface support for IPv4 routed interfaces. 

This feature implements support for RFC6232 that helps a user identify source of an LSP purge packet. It can be enabled

LDP Hello Redundancy uses the LDP Extended Discovery Mechanism to establish a redundant targeted Hello adjacency

This feature improves the switch behavior and predictability when it runs out of memory (OOM). Common contributing

MPLS ping/traceroute utility is extended to support liveness checking of Nexthop Group tunnel endpoint (MPLS

Verbatim qualifier This feature enhances two basic policy actions, redirect and offload, for Macro Segmentation

This feature allows setting the desired maximum VOQ latency. Drop probabilities are adjusted in hardware to meet this limit.

Multiprotocol Label Switching (MPLS) is a networking process that replaces complete network addresses with short

The Multicast Source Discovery Protocol (MSDP) provides a mechanism to connect together multiple PIM Sparse Mode

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.

This feature provides multipath router id, a new multipath mode to control the behavior of RPF selection. In the

Term multipath relax in the context of BGP bestpath selection process means that the “AS path” contents of BGP

In an OSPFv2 Area Border Router (ABR), area filters may be used to prevent specific prefixes from being announced by an area as Type 3 Summary LSAs or routes to AS boundary routers as Type-4 ASBR summary LSAs.

Power management is a way to limit the total available power to be used for Power over Ethernet (PoE) ports. Without power management, the total amount of power that the power supply units (PSU) are able to provide is used. Power management can be used to create power redundancies. For example, if a system has 2 1050W PSUs, the feature can set the total available power to be 800W for PoE. With this configuration, 1 PSU is sufficient to power the system and the unused PSU acts as a backup source, thus giving the system a 1+1 redundancy.

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

Segment Routing Traffic Engineering Policy (SR TE) aka SR Policy makes use of Segment Routing (SR) to allow a headend

Segment Routing Traffic Engineering Policy (SR TE) aka SR Policy makes use of Segment Routing (SR) to allow a headend

Packets sampled for sFlow are packaged in a flow sample structure containing, amongst other things, input and output

For MPLS VPN address family in BGP, when the VPN path routes are imported to multiple VRFs,  individual FEC entry in

“show rib route summary” will display a table containing the summary of all the routes in the Routing Information

The error disable recovery interval specifies the duration that elapses before an error disable recovery enabled

This feature adds support for CPU traffic policy capable of matching and acting on IP traffic which would otherwise

Configurable port qualifier sizing allows for dynamic resizing of the hardware TCAM feature qualifier for IPKGV

DirectFlow is a feature that allows the user to steer traffic by matching on packet headers and/or metadata using the

Unequal cost multi path (UCMP) for BGP is a mechanism for forwarding ECMP route traffic using weights, with which the