- Written by Bobby McGonigle
- Posted on February 22, 2022
- Updated on July 12, 2023
- 7178 Views
This document describes the configuration and behavior of physical interfaces on the 7388-series switches and Linecards (LC)
- Written by Tarun Jaswanth LNU
- Posted on August 24, 2020
- Updated on October 17, 2024
- 26286 Views
802.1X is an IEEE standard protocol that prevents unauthorized devices from gaining access to the network.
- Written by Seng Leung
- Posted on February 16, 2022
- Updated on November 16, 2023
- 8887 Views
AAA accounting records can be enabled for OpenConfig gNMI/gNOI RPCs. Accounting records can be logged to the TACACS+ server, RADIUS server, or to syslog.
- Written by Yoshihiro Ishijima
- Posted on February 25, 2022
- Updated on June 12, 2023
- 7085 Views
This feature adds support for sending and receiving BGP IPv6 labeled-unicast routes with IPv4-mapped IPv6 next hops. With this feature enabled, when a BGP speaker receives a next hop with IPv4-mapped IPv6 address,
- Written by Munisha Rani
- Posted on February 22, 2022
- Updated on January 30, 2023
- 10615 Views
Cable diagnostics is a feature to detect faults with twisted pair copper cables and measure the cable length.
- Written by VICTOR WEN
- Posted on April 7, 2021
- Updated on April 2, 2024
- 9433 Views
EOS supports the DHCP Relay feature, which relays DHCP Requests/Responses between DHCP clients and DHCP servers in different subnets.
- Written by Neel Neogi
- Posted on February 16, 2022
- Updated on March 3, 2022
- 6614 Views
Multiprotocol Label Switching (MPLS) is a networking process that replaces complete network addresses with shortest path labels for directing data packets to network nodes.
- Written by Jacob Sword
- Posted on February 16, 2022
- Updated on March 7, 2024
- 9614 Views
Multiple dynamic counter features may be enabled simultaneously, primarily configured using the [no] hardware counter feature [feature] CLI commands. Compatibility of these features has been enhanced to allow for greater flexibility in simultaneously enabled counter features. Changes in counter feature compatibility across EOS releases is detailed below.
- Written by Adam Morrison
- Posted on March 3, 2022
- Updated on June 2, 2022
- 6749 Views
Interfaceful IP-VRF to IP-VRF communication uses a pair of routes to distribute IP subnet information, rather than a single EVPN type-5 route.
- Written by James Shephard
- Posted on August 25, 2019
- Updated on July 5, 2023
- 11036 Views
Forwarding destination prediction enables visibility into how a packet is forwarded through the switch, allowing you to determine which interfaces a packet would egress out of. Typical use cases include, but are not limited to, determining egress members for Port-Channels and ECMPs.
- Written by James Shephard
- Posted on March 6, 2020
- Updated on July 12, 2023
- 7402 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 Michelle Wang
- Posted on November 13, 2019
- Updated on March 3, 2022
- 10451 Views
In a typical switch deployment, multiple ports can have the same configuration, such as description and access VLAN.
- Written by Tanuj Kumar Jhamb
- Posted on February 22, 2022
- Updated on March 3, 2022
- 7507 Views
This feature allows the user to match the 20 bit IPV6 flow label using the Qos Policy Map and allows to classify the flow-label controlled traffic.
- Written by David Jowett
- Posted on February 28, 2022
- Updated on March 3, 2022
- 6736 Views
This feature provides support for packet and byte ingress counters for IPv6 multicast routes.
- Written by Athichart Tangpong
- Posted on October 22, 2018
- Updated on October 1, 2024
- 13776 Views
A L2 sub-interface is a logical bridging endpoint associated with traffic on an interface distinguished by 802.1Q tags, where each <interface, 802.1q tag> tuple is treated as a first class bridging interface.
- Written by Trevor Yu
- Posted on April 18, 2018
- Updated on July 21, 2023
- 7160 Views
LANZ adds support for configuring global thresholds for Ethernet ports on DCS 7020, DCS 7050TX, DCS 7050X2, DCS
- Written by Zackary Ayoun
- Posted on May 23, 2022
- Updated on July 19, 2023
- 10423 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 Jeff Hornsberger
- Posted on February 16, 2022
- Updated on March 3, 2022
- 6986 Views
LDP per-neighbor authentication provides greater flexibility in the authentication of LDP routers in a network. Individual routers or groups of routers may be configured with different passwords to enhance security and to ensure certain routers do not exchange MPLS
- Written by John Li
- Posted on February 16, 2022
- Updated on July 18, 2024
- 7797 Views
This TOI describes the MAC limit per VLAN feature which can be used to limit the number of locally learned MAC addresses per VLAN.
- Written by Niranjan Mahabaleshwar
- Posted on February 24, 2022
- Updated on July 19, 2023
- 8777 Views
This document explains how to configure and deploy Arista MSS-FW with Palo Alto Networks firewalls and Panorama in a Layer 3 deployment with HA (High Availability) support. The Panorama management server can be deployed as either a virtual or a hardware appliance.
- Written by Trevor Yu
- Posted on February 23, 2022
- Updated on November 26, 2024
- 13356 Views
Media Access Control Security (MACSec) is an industry standard encryption mechanism that protects all traffic flowing on the Ethernet links. MACSec is based on IEEE 802.1X and IEEE 802.1AE standards.
- Written by Manish Singhvi
- Posted on February 15, 2022
- Updated on February 15, 2022
- 7610 Views
MAC security uses MACsec Key Agreement ( MKA ) protocol for negotiation between peers using pre-shared key or 802.1X based CAK/CKN and eventually derives Secure Association Key ( SAK ).
- Written by Prajakta Joshi
- Posted on November 6, 2019
- Updated on March 3, 2022
- 7861 Views
Multiprotocol Label Switching (MPLS) is a networking process that replaces complete network addresses with short
- Written by Binoshmon T B
- Posted on July 22, 2020
- Updated on June 27, 2022
- 12081 Views
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.
- Written by Nathanael Dattappa
- Posted on February 16, 2022
- Updated on March 3, 2022
- 6786 Views
This command configures the default speed on all of the OSFP and QSFP-DD ports on a system. It can be applied on ports without any transceivers inserted.
- Written by Ronan Mac Fhlannchadha
- Posted on February 9, 2023
- Updated on February 22, 2023
- 6068 Views
This feature provides support for SPIFFE-ID in OpenConfig. The SPIFFE-ID will take precedence over any metadata usernames or common name username found. This username will be used for all AAA operations.
- Written by Shyam Kota
- Posted on June 14, 2019
- Updated on March 3, 2022
- 10748 Views
IPv4 routes of certain prefix lengths can be optimized for enhanced route scale on 7500R, 7280R, 7500R2 and 7280R2
- Written by Ramakrishnan G
- Posted on February 28, 2022
- Updated on October 16, 2023
- 8935 Views
IPv4 routes of certain prefix lengths can be optimized for enhanced route scale using this feature. This feature is ideally suited to achieve route scale when route distribution has a large number of routes concentrated across the prefix-lengths 24, 23 and 22. EOS 4.27.2F offers 8-to-1 compression of routes as an enhancement.
- Written by Nicholas Cheng
- Posted on February 23, 2022
- Updated on March 3, 2022
- 6862 Views
This feature adds support for making the various OSPFv3 counters accessible via CLI.
- Written by David Cronin
- Posted on March 3, 2022
- Updated on March 14, 2024
- 9629 Views
This document describes a new CLI command to help debug how and why policy permits and denies paths. The aim of this CLI command is for the user to debug a route map or RCF (Routing Control Functions) function by specifying as input a prefix for which BGP has reachability for, either via a BGP peer or a redistribute source.
- Written by Ethan Vadai
- Posted on March 6, 2020
- Updated on March 14, 2024
- 17202 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 David Cronin
- Posted on March 3, 2022
- Updated on November 6, 2024
- 19712 Views
Routing control functions (RCF) is a language that can be used to express route filtering and attribute modification logic in a powerful and programmatic fashion.
- Written by David Cronin
- Posted on March 4, 2022
- Updated on April 16, 2024
- 17083 Views
Routing control functions (RCF) is a language that can be used to express route filtering and attribute modification logic in a powerful and programmatic fashion.
- Written by Kalash Nainwal
- Posted on December 14, 2020
- Updated on July 31, 2024
- 12385 Views
RSVP-TE, the Resource Reservation Protocol (RSVP) for Traffic Engineering (TE), is used to distribute MPLS labels for steering traffic and reserving bandwidth. The Label Edge Router (LER) feature implements the headend functionality, i.e., RSVP-TE tunnels can originate at an LER which can steer traffic into the tunnel.
- Written by Scott Bailey
- Posted on May 23, 2022
- Updated on February 21, 2024
- 6728 Views
The CCS-750X-48ZXP is a 48 port 10GBASE-T linecard, capable of several full-duplex link speeds to support connecting to a variety of compatible devices of varying capabilities. All supported linkup speeds on this card can be automatically selected during the linkup process using IEEE 802.3 Clause 28 auto-negotiation. Note that IEEE 802.3 also allows for speeds lower than 1Gbps to link up without clause 28 auto-negotiation.
- Written by Neil Jarvis
- Posted on March 2, 2022
- Updated on June 7, 2023
- 9081 Views
A L2 sub-interface is a logical bridging endpoint associated with traffic on an interface distinguished by 802.1Q tags, where each <interface, 802.1Q tag> tuple is treated as a first-class bridging interface.
- Written by Muhammad Yousuf
- Posted on September 9, 2021
- Updated on February 27, 2024
- 8957 Views
This TOI supplements the Ingress Traffic Policy applied on ingress interfaces. Please refer to that document for a description of Traffic Policies and field-sets. This TOI explains the Traffic Policies as applied in the egress direction on interfaces
- Written by Naresh Kumar L S
- Posted on February 22, 2022
- Updated on April 4, 2024
- 8583 Views
Several customers have expressed interest in using IPv6 addresses for VxLAN underlay in their Data Centers (DC). Prior to 4.27.2F, only IPv4 addresses are supported for VxLAN underlay, i.e VTEPs are reachable via IPv4 addresses only. This feature enables a VTEP to send VxLAN Encapsulated packets using IPv6 underlay.
- Written by Shelly Chang
- Posted on January 6, 2022
- Updated on May 3, 2024
- 8657 Views
This feature introduces hardware forwarding support of IPv4 multicast traffic over IPv4 GRE tunnel interfaces in Arista Switches. Multicast source traffic can reach the receivers which are separated by an IP cloud which is not configured for IP multicast routing by utilizing a GRE tunnel.
- Written by Graeme Rennie
- Posted on February 15, 2022
- Updated on May 11, 2022
- 7642 Views
This article describes the Tap Aggregation MAC Address Replacement feature. This feature provides the ability to configure user-specific values to replace the destination and source MAC addresses of packets forwarded by Tap Aggregation.
- Written by Ramiro De Rojas Perez
- Posted on February 25, 2022
- Updated on March 3, 2022
- 6097 Views
The Transceiver test pattern cli can be used to check the quality of the physical layer links starting or ending at a given module. This is done by transmitting or receiving a ‘test pattern’, a pseudo-random sequence of bits that two pieces of hardware can simultaneously generate.
- Written by Isidor Kouvelas
- Posted on February 28, 2022
- Updated on July 29, 2024
- 14620 Views
Virtual Private LAN Service (VPLS) appears in (almost) all respects as an Ethernet type service to customers of a Service Provider (SP). A VPLS glues together several individual LANs across a packet switched network to appear and function as a single bridged LAN. This is accomplished by incorporating MAC address learning, flooding, and forwarding functions in the context of pseudowires that connect these individual LANs across the packet switched network. LDP signaling is used for the setup and teardown of the mesh of pseudowires that constitute a given VPLS instance.
- Written by Gary McCarthy
- Posted on June 29, 2020
- Updated on July 12, 2023
- 7764 Views
Prior to EOS 4.24.1F, per-destination steering into an SR Policy was only supported for IP unicast BGP routes in the default VRF. Support for additional AFI/SAFIs were added as follows: EOS 4.24.2F: L2 EVPN — EOS 4.27.2F: BGP Labeled Unicast