- Written by Navneet Sinha
- Posted on June 29, 2016
- Updated on November 17, 2016
- 6034 Views
The Label Distribution Protocol (LDP) is a protocol in the Multiprotocol Label Switching (MPLS) context that allows
- Written by Xin Guang (Tony) Du
- Posted on August 25, 2016
- Updated on November 23, 2020
- 8475 Views
The LDP pseudowire feature provides support for emulating Ethernet connections over a Multiprotocol Label
- Written by Peter Lam
- Posted on September 30, 2015
- Updated on December 11, 2023
- 7766 Views
Leaf Smart System Upgrade (SSU) provides the ability to upgrade the EOS image with minimal traffic disruption.Note: It is possible that SSU shutdown and bootup are not supported in the same image. If a product has shutdown support in image A and bootup support in a later image B, then SSU upgrade cannot be performed from image A to any images earlier than image B, including image A itself. However, upgrading from image A to image B onwards is allowed.
- Written by Sahil Midha
- Posted on December 22, 2017
- Updated on February 6, 2022
- 6599 Views
Link Fault Signalling (LFS) is a mechanism by which remote link faults are asserted over a link experiencing
- Written by Prachi Modi
- Posted on February 20, 2023
- Updated on February 20, 2023
- 2711 Views
With the 14.0 release, CloudVision Cognitive Unified Edge (CV-CUE) removes the Wireless Manager(WM) UI dependency for login and for applying the service license. You will no longer be redirected to WM and can now directly login to CV-CUE from the UI.
- Written by Vikas Hegde
- Posted on June 29, 2016
- Updated on February 8, 2022
- 5764 Views
Support for Media Access Control Security (MACsec) with static keys was added in EOS 4.15.4. This feature brings
- Written by Sriram Rajagopalan
- Posted on September 30, 2015
- Updated on February 5, 2022
- 7169 Views
Maintenance mode is a framework to allow for the easy removal of elements of a switch or the entire switch from
- Written by Mihyar Baroudi
- Posted on February 1, 2016
- Updated on February 6, 2022
- 4665 Views
Maintenance mode with sub interfaces is an extension to the maintenance mode feature released in EOS 4 15 2F. With this
- Written by Preyas Hathi
- Posted on June 2, 2022
- Updated on June 2, 2022
- 3863 Views
A server cluster or a cluster is a group of Wireless Manager (WM) servers. A cluster comprises a parent WM server and one or more child WM servers. A cluster is created to manage multiple servers using a single server.
- Written by Navneet Sinha
- Posted on June 29, 2016
- Updated on February 8, 2022
- 5075 Views
MapReduce Tracer is an existing feature that monitors MapReduce nodes that are directly connected to Arista
- Written by Digvijay Gahlot
- Posted on December 22, 2017
- Updated on December 22, 2017
- 4561 Views
Classification of MPLS packets based on traffic class bits in MPLS header for QoS Policy Maps. DCS
- Written by Navneet Sinha
- Posted on June 29, 2016
- Updated on June 29, 2016
- 5000 Views
Currently, the 'maximum routes' knob allows one to set an upper bound on the number of routes that can be received from a
- Written by Mihyar Baroudi
- Posted on February 1, 2016
- Updated on March 4, 2022
- 9295 Views
Media Access Control Security (MACSec) is an industry standard encryption mechanism to protect all traffic flowing
- Written by Kevin Amiraux
- Posted on September 30, 2015
- Updated on June 12, 2023
- 7045 Views
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.
- Written by Shamit Kapadia
- Posted on September 30, 2015
- Updated on January 31, 2024
- 8143 Views
In an MLAG setup, routing on a switch (MLAG peer) is possible using its own bridge/system MAC, VARP MAC or VRRP MAC. When a peer receives an IP packet with destination MAC set to one of the aforementioned MACs, the packet gets routed if the hardware has enough information to route the packet. Before introducing this feature, if the destination MAC is peer’s bridge MAC, the packet is L2 bridged on the peer-link and the routing takes place on the peer. This behavior to use the peer-link to bridge the L3 traffic to the peer is undesirable especially when the MLAG peers can route the packets themselves.
- Written by Som Neema
- Posted on September 30, 2015
- Updated on September 30, 2015
- 6437 Views
MLAG currently checks for basic MLAG configuration to be consistent (e.g. domain id) before formation with the peer.
- Written by Tarun Soin
- Posted on February 15, 2018
- Updated on July 11, 2019
- 7509 Views
When MLAG peer link goes down, the secondary peer assumes the primary peer is down/dead, and takes over the primary
- Written by Navneet Sinha
- Posted on June 29, 2016
- Updated on November 17, 2016
- 5044 Views
In an MLAG setup, periodic TCP/UDP heartbeats are sent over peer link to ensure IP connectivity between peers. Prior
- Written by Hemanth Murthy
- Posted on February 8, 2017
- Updated on December 17, 2020
- 6333 Views
If an MLAG flaps on one peer, then we may have to remap the MAC addresses learned, such that the reachability is via the
- Written by Lavanya Conjeevaram
- Posted on November 22, 2017
- Updated on September 4, 2019
- 5169 Views
The feature MP BGP Multicast provides a way to populate the MRIB (Multicast Routing Information Base). MRIB is an
- Written by Mayukh Saubhasik
- Posted on May 1, 2015
- Updated on December 22, 2017
- 5202 Views
EOS 4.15.0F adds support for MPLS encapsulation of IP packets in EOS. The functionality is exposed through two
- Written by Max Xiao
- Posted on May 1, 2015
- Updated on February 5, 2022
- 4749 Views
Multiprotocol Label Switching (MPLS) is a networking process that replaces complete network addresses with short
- Written by Anil Joshi
- Posted on June 29, 2016
- Updated on November 3, 2022
- 6612 Views
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.
- Written by Ajay Chhatwal
- Posted on March 31, 2017
- Updated on August 15, 2017
- 4664 Views
This feature allows the Arista switch to act as the tunnel head for an MPLS tunnel and is exposed through two
- Written by Soumen Biswas
- Posted on April 24, 2015
- Updated on February 5, 2022
- 5884 Views
While migrating from PVST to MSTP, or vice verse, the network engineer may choose not to run MSTP throughout the
- Written by Allen Shih
- Posted on November 22, 2017
- Updated on November 22, 2017
- 9757 Views
Multi hop BFD allows for liveness detection between systems whose path may consist of multiple hops. With an
- Written by Shelly Chang
- Posted on November 22, 2017
- Updated on December 22, 2017
- 4939 Views
Multicast Only Fast Reroute (MoFRR) is a feature based on PIM sparse mode (PIM SM) protocol to minimize packet loss in a
- Written by Karan Jagjit Kumar
- Posted on June 29, 2016
- Updated on July 21, 2023
- 5162 Views
LANZ adds support for monitoring congestion on backplane (or fabric) ports on DCS 7304, DCS 7308, DCS 7316, DCS
- Written by Prashant Kumar
- Posted on April 13, 2015
- Updated on July 18, 2023
- 4544 Views
In Tap Aggregation mode, an interface can be configured as tap or tool port. Tap ports are used to 'tap' the traffic and
- Written by Mihyar Baroudi
- Posted on December 8, 2015
- Updated on February 5, 2022
- 4682 Views
The NAT Application Gateway (ALG) feature allows FTP connections between client server to be translated using
- Written by Jikai Yin
- Posted on June 29, 2016
- Updated on December 11, 2023
- 7100 Views
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
- Written by Prachi Modi
- Posted on December 11, 2022
- Updated on December 12, 2022
- 2960 Views
In the 13.0 release, CloudVision Cognitive Unified Edge (CV-CUE) adds a new report and also includes some enhancements to existing reports.
- Written by Kaladhar Musunuru
- Posted on September 30, 2015
- Updated on January 20, 2023
- 5575 Views
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.
- Written by Tom Emmons
- Posted on April 13, 2015
- Updated on May 3, 2015
- 4357 Views
Nexthop selection using GRE key allows for nexthop routing selection based on the GRE key of a GRE encapsulated IP
- Written by Lavanya Conjeevaram
- Posted on June 29, 2016
- Updated on February 7, 2022
- 6466 Views
Nexthop group match in PBR policy enables the user to match incoming packets being routed to a specified nexthop group
- Written by Tula Kraiser
- Posted on April 2, 2015
- Updated on May 1, 2015
- 4595 Views
Vmware NSX Controllers expect Hardware VTEPs to monitor the liveness of the Replication Service Node via BFD. In
- Written by Mihyar Baroudi
- Posted on December 8, 2015
- Updated on February 5, 2022
- 5152 Views
The EOS Event Manager feature provides the ability to specify a condition and an action to be carried out when that
- Written by Prachi Modi
- Posted on September 13, 2023
- Updated on September 13, 2023
- 2338 Views
With the 15.0.1 release, CV-CUE extends the wired configuration and monitoring capabilities. You can now onboard switches (710P, 720XP, 720DP) to CV-CUE. You can also configure switches and manage switch-related settings directly from the UI.
- Written by Aparna Karanjkar
- Posted on December 22, 2017
- Updated on February 6, 2022
- 4858 Views
. These are the release notes and configuration guide for the OpenConfig feature available in the 4.20.1F EOS
- Written by Padmini Misra
- Posted on March 29, 2018
- Updated on August 2, 2022
- 12220 Views
These are the release notes and configuration guide for the OpenConfig feature available in the 4.20.2.1F EOS
- Written by Prateek Nigam
- Posted on April 10, 2015
- Updated on May 1, 2015
- 4553 Views
OpenFlow 1.3 protocol is supported in EOS 4.15.0F on DCS 7050 and DCS 7050X series of switches. The switch and the
- Written by Prateek Nigam
- Posted on May 1, 2015
- Updated on May 1, 2015
- 4378 Views
A new forwarding pipeline is being introduced in EOS 4.15.0F which allows the traffic entering the switch to be
- Written by Prateek Nigam
- Posted on September 30, 2015
- Updated on September 30, 2015
- 4600 Views
Action TTL decrement in an OpenFlow flow. OpenFlow 1.3 Group support on DCS 7010 series. Clearing
- Written by Dhruba Jyoti Pokhrel
- Posted on February 20, 2023
- Updated on February 20, 2023
- 2729 Views
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.
- Written by David Blease
- Posted on February 8, 2017
- Updated on May 17, 2018
- 5902 Views
The OSPF Non Stop Forwarding (NSF) feature adds support for Graceful OSPF Restart (IETF RFC 3623) and Graceful OSPFv3
- Written by Mihyar Baroudi
- Posted on December 8, 2015
- Updated on December 21, 2015
- 4580 Views
EOS 4.15.3F adds support for configuring auto cost in OSPFv3 for routed ethernet interfaces and LAG interfaces.
- Written by Zeqing Xia
- Posted on May 1, 2015
- Updated on May 1, 2015
- 4558 Views
OSPF distribute list is a policy construct to filter out routes received from OSPF LSAs so that they will not be
- Written by Chris Roche
- Posted on February 8, 2017
- Updated on February 8, 2017
- 4527 Views
The OSPF Max LSA Retransmission Threshold feature adds a configurable limit to the number of LSA update
- Written by Mihyar Baroudi
- Posted on December 8, 2015
- Updated on January 24, 2022
- 4989 Views
OSPF Non Stop Forwarding (NSF) adds support for Graceful OSPF Restart, IETF RFC 3623 . With OSPF Graceful Restart
- Written by Anoop Dawani
- Posted on May 1, 2015
- Updated on February 7, 2022
- 4495 Views
This feature adds authentication support for OSPFv3. Unlike OSPFv2, OSPFv3 does not have authentication fields