Tag :: TOI

Arista switches provide several mirroring features. Filtered mirroring to CPU adds a special destination to the mirroring features that allows the mirrored traffic to be sent to the switch supervisor. The traffic can then be monitored and analyzed locally without the need of a remote port analyzer. Use case of this feature is for debugging and troubleshooting purposes.

This article covers two distinct but related features: Filtered Mirroring and Mirroring to GRE Tunnel. Filtered

In an MLAG setup, routing on a switch (MLAG peer) is possible using its own bridge/system MAC, VARP MAC or VRRP MAC.

MLAG currently checks for basic MLAG configuration to be consistent (e.g. domain id) before formation with the peer.

When MLAG peer link goes down, the secondary peer assumes the primary peer is down/dead, and takes over the primary

In an MLAG setup, periodic TCP/UDP heartbeats are sent over peer link to ensure IP connectivity between peers. Prior

If an MLAG flaps on one peer, then we may have to remap the MAC addresses learned, such that the reachability is via the

The feature MP BGP Multicast provides a way to populate the MRIB (Multicast Routing Information Base). MRIB is an

EOS 4.15.0F adds support for MPLS encapsulation of IP packets in EOS. The functionality is exposed through two

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

MPLS-over-GRE encapsulation support in EOS 4.17.0 enables tunneling IPv4 packets over MPLS over GRE tunnels. This feature leverages next-hop group support in EOS. With this feature, IPv4 routes may be resolved via MPLS-over-GRE next-hop group to be able to push one MPLS label and then GRE encapsulate the resulting labelled IPv4 packet before sending out of the egress interface.

This feature allows the Arista switch to act as the tunnel head for an MPLS tunnel and is exposed through two

While migrating from PVST to MSTP, or vice verse, the network engineer may choose not to run MSTP throughout the

Multi hop BFD  allows for liveness detection between systems whose path may consist of multiple hops. With an

Multicast Only Fast Reroute (MoFRR) is a feature based on PIM sparse mode (PIM SM) protocol to minimize packet loss in a

LANZ adds support for monitoring congestion on backplane (or fabric) ports on DCS 7304, DCS 7308, DCS 7316, DCS

In Tap Aggregation mode, an interface can be configured as tap or tool port. Tap ports are used to 'tap' the traffic and

The NAT Application Gateway (ALG) feature allows FTP connections between client server to be translated using

NAT Peer State Synchronization feature provides redundancy and resiliency for Dynamic NAT across a pair of devices in an attempt to mitigate the risk of single NAT device failure. Each switch advertises connection state updates to its peer.  State update consists of connection creation, connection state change (TCP mostly) or connection tear down

In the 13.0 release, CloudVision Cognitive Unified Edge (CV-CUE) adds a new report and also includes some enhancements to existing reports.

The nexthop group feature allows users to manually configure a set of tunnels. Nexthop group counters provide the ability to count packets and bytes associated with each tunnel nexthop, irrespective of the number of times it appears in one or more nexthop groups. In other words, if a nexthop group entry shares a tunnel resource with another entry, they will also share the same counter.

Nexthop selection using GRE key allows for nexthop routing selection based on the GRE key of a GRE encapsulated IP

Nexthop group match in PBR policy enables the user to match incoming packets being routed to a specified nexthop group

Vmware NSX Controllers expect Hardware VTEPs to monitor the liveness of the Replication Service Node via BFD.  In

The EOS Event Manager feature provides the ability to specify a condition and an action to be carried out when that

 . These are the release notes and configuration guide for the OpenConfig feature available in the 4.20.1F EOS

These are the release notes and configuration guide for the OpenConfig feature available in the 4.20.2.1F EOS

OpenFlow 1.3 protocol is supported in EOS 4.15.0F on DCS 7050 and DCS 7050X series of switches. The switch and the

A new forwarding pipeline is being introduced in EOS 4.15.0F which allows the traffic entering the switch to be

Action TTL decrement in an OpenFlow flow. OpenFlow 1.3 Group support on DCS 7010 series. Clearing

With the 14.0 release, you can integrate OpenID Connect with a captive portal for authentication. The OpenID Connect integration functionality is available only for captive portals hosted on the Arista Cloud. It is not available if the captive portal is hosted on third-party servers or on the access point.

The OSPF Non Stop Forwarding (NSF) feature adds support for Graceful OSPF Restart (IETF RFC 3623) and Graceful OSPFv3

EOS 4.15.3F adds support for configuring auto cost in OSPFv3 for routed ethernet interfaces and LAG interfaces.

OSPF distribute list is a policy construct to filter out routes received from OSPF LSAs so that they will not be

The OSPF Max LSA Retransmission Threshold feature adds a configurable limit to the number of LSA update

OSPF Non Stop Forwarding (NSF) adds support for Graceful OSPF Restart, IETF RFC 3623 .  With OSPF Graceful Restart

This feature adds authentication support for OSPFv3. Unlike OSPFv2, OSPFv3 does not have authentication fields

EOS 4.17.0F adds support for BFD in OSPFv3. BFD provides a faster convergence in scaled deployments where using

EOS release 4.20.1F adds OSPFv3 flood pacing support that allows configuring the minimum interval between the

In previous releases of EOS, Stub area and NSSA area types were supported for OSPFv3, but without support of the "no

Overlay IPv6 routing over VXLAN Tunnel is simply routing IPv6 packets in and out of VXLAN Tunnels, similar to

This document describes a few enhancements done in Wireless Manager (WM) release 8.8 in respect of  AP firmware

With the 14.0 release, you can add device passwords and AP-Server Key passphrase as defined in the password policy. The passwords are based on the password policy and password settings that you configure in CV-CUE.

This feature provides the capability to mirror special L2 control frames, called the Pause or Priority Flow Control

Policy Based Routing (PBR) provides the flexibility of routing according to custom defined policies in a way that

Prior to EOS 14.15.0F, if a single packet hit both a PBR and an ACL rule, then only the hardware counters corresponding

The per port per VLAN feature allows application of QoS policies for IP, IPv6 and non IP traffic on a per port per VLAN

DCS 7010T. DCS 7050X. DCS 7250X. DCS 7260X. DCS 7280E, DCS 7280R. DCS 7300X. DCS 7320X. DCS 7500E,

Per VLAN MAC Learning is a feature to enable/disable mac learning per vlan instead of per port. Using this feature with

Permitting traffic during ACL updates has been available for traffic steering in tap aggregation mode since EOS