- Written by Ravi Teja Guthikonda
- Posted on January 21, 2019
- Updated on July 12, 2023
- 1707 Views
Time stamping is an important tool for network engineering and performance analysis. EOS-4.21.3F adds support for payload timestamping of all GRE encapsulated mirrored packets at line rate (initially only supported on the 7500R/7280R/7500R2/7280R2 series). A timestamp is taken on ingress and inserted into the GRE encapsulated mirrored packet payload at egress.
- Written by Shyam Kota
- Posted on January 17, 2019
- Updated on January 21, 2019
- 2632 Views
MMU Profile CLI allows to reserve buffers in either cells or bytes. This feature eases the configuration as different
- Written by Vincent Lam
- Posted on January 18, 2019
- Updated on June 6, 2022
- 6847 Views
In conventional VXLAN deployments, each MLAG pair of switches are represented as a common virtual VTEP.
- Written by Shyam Kota
- Posted on January 21, 2019
- Updated on January 21, 2019
- 2715 Views
Modular systems and fixed systems with multi faps by default use fabric egress replication mode. With fabric egress
- Written by Saravanan Balasubramanian
- Posted on January 21, 2019
- Updated on January 21, 2019
- 3128 Views
4.21.3F introduces support for Multicast Traffic in Vxlan Using Underlay in the platforms listed below. The TOI for
- Written by Shyam Kota
- Posted on January 18, 2019
- Updated on January 21, 2019
- 2628 Views
The BGP graceful restart mechanism defined in RFC4724 limits the usage of BGP graceful restart to BGP protocol
- Written by David Blease
- Posted on February 8, 2017
- Updated on May 17, 2018
- 3687 Views
The OSPF Non Stop Forwarding (NSF) feature adds support for Graceful OSPF Restart (IETF RFC 3623) and Graceful OSPFv3
- Written by Shyam Kota
- Posted on January 23, 2019
- Updated on January 23, 2019
- 2902 Views
EOS 4.21.3F adds support for OSPF Non Stop Forwarding in the multi agent routing protocol model.
- Written by Chris Roche
- Posted on January 18, 2019
- Updated on January 18, 2019
- 2268 Views
This feature enables support for SNMP MIB for OSPFv3 in EOS. The feature follows RFC 5643 version 16. The deviations
- Written by Ketan Kotak
- Posted on January 17, 2019
- Updated on January 23, 2019
- 2552 Views
It has been observed that on Arista products using Alta switching chip from Intel/Fulcrum may experience the CPU Lock
- Written by Kallol Mandal
- Posted on January 17, 2019
- Updated on January 23, 2019
- 4208 Views
Selective ARP install is the selective programming of remote ARPs in hardware as received through EVPN Type 2 MAC IP
- Written by Prateek Nigam
- Posted on January 17, 2019
- Updated on January 23, 2019
- 2559 Views
The following QoS features are supported on the vEOS router (DPDK flavor):. The port can be configured
- Written by Chunxi Yu
- Posted on January 21, 2019
- Updated on January 21, 2019
- 810 Views
Similar to reconfiguring the traffic class to transmit queue map, the traffic class to priority group mapping can
- Written by Shyam Kota
- Posted on January 23, 2019
- Updated on January 23, 2019
- 2244 Views
4.21.3F introduces support for ‘Replace AS Path’ in the multi agent routing protocol model.
- Written by Shyam Kota
- Posted on January 22, 2019
- Updated on January 22, 2019
- 2848 Views
RIB Route Control is a collection of mechanisms for controlling how IP routing table entries get used. Next hop
- Written by Eddie Kibicho
- Posted on January 22, 2019
- Updated on January 22, 2019
- 2336 Views
User Defined Fields (UDFs) are Access List (ACL) qualifiers that consist of an offset into a packet and a pattern to
- Written by Suma LNU
- Posted on January 18, 2019
- Updated on January 18, 2019
- 2362 Views
This feature allows for setting BGP path attribute Multi Exit Discriminator for IGP routes advertised by BGP. This
- Written by Michael Chin
- Posted on January 18, 2019
- Updated on September 15, 2023
- 4433 Views
The ‘show interfaces interactions’ command aims to provide users a resource that explains various relationships between ethernet interfaces. It describes interactions in which a configuration on an interface causes another set of interfaces to become inactive or have reduced capabilities.Examples include a primary interface consuming subordinate interfaces to service a four-lane speed or platform restrictions that require four interfaces of a port to operate at the same speed.
- Written by Bruno Perriot
- Posted on January 17, 2019
- Updated on January 18, 2019
- 2447 Views
The MMU watermark counters report the maximum usage of the MMU queues during a given time window. This feature reports
- Written by Jason Shamberger
- Posted on March 11, 2020
- Updated on August 23, 2023
- 7759 Views
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.
- Written by Eamon Doyle
- Posted on January 22, 2019
- Updated on March 14, 2019
- 2845 Views
BGP Large Communities, as defined in RFC8092, is now supported within EOS. Both standard (4 octets) and
- Written by Shyam Kota
- Posted on January 18, 2019
- Updated on January 23, 2019
- 2480 Views
The route map feature in BGP allows filtering and manipulating BGP path information. It combines set statements with
- Written by Aparna Karanjkar
- Posted on January 18, 2019
- Updated on January 23, 2019
- 3883 Views
4.21.3F release supports reading and streaming various OpenConfig configuration and state models over gNMI (gRPC
- Written by Shyam Kota
- Posted on January 22, 2019
- Updated on January 23, 2019
- 2935 Views
The route map subroutine (referred from here on as sub route map) configuration simplifies routing policies by
- Written by Jesus Villarroel
- Posted on January 23, 2019
- Updated on January 23, 2019
- 1630 Views
Symmetric LAG hashing allows the two flows of a bidirectional communication link to be forwarded to the same member of
- Written by Charlotte Fedderly
- Posted on January 21, 2019
- Updated on April 6, 2022
- 2939 Views
This article describes the TAP Aggregation 802.1Q (VLAN) tag stripping feature. This feature allows up to two of the outermost incoming 802.1Q tags to be stripped, and can be configured on a traffic steering policy or a tool port.
- Written by Max Xiao
- Posted on January 18, 2019
- Updated on January 18, 2019
- 2484 Views
This feature enables support for hardware accelerated sFlow while running in Tap Aggregation exclusive mode. This
- Written by Todor Nikolov
- Posted on January 17, 2019
- Updated on January 23, 2019
- 2533 Views
Some monitoring tools have a limited time to receive information from the switch and may break if waiting for a
- Written by Kaladhar Musunuru
- Posted on January 23, 2019
- Updated on January 23, 2019
- 2443 Views
This feature provides total ingress MPLS packet and byte counters received per interface. DCS
- Written by Shilpa Santhanam
- Posted on January 17, 2019
- Updated on January 23, 2019
- 2670 Views
4.21.3F introduces support for the feature on the platforms listed below. The TOI describing the feature support on
- Written by Eddie Kibicho
- Posted on January 22, 2019
- Updated on February 5, 2022
- 2227 Views
User Defined Fields (UDFs) are Access List (ACL) qualifiers that consist of an offset into a packet and a pattern to
- Written by Shyam Kota
- Posted on January 22, 2019
- Updated on January 22, 2019
- 2617 Views
RPF Exceptions TOI can be accessed here. 4.21.3F introduces support for this feature on SVIs(Switched
- Written by Kallol Mandal
- Posted on January 17, 2019
- Updated on January 23, 2019
- 4836 Views
In certain VXLAN deployments with either NSX/Logical Router or EVPN IRB, active nodes hosting a virtual IP address
- Written by Jeffrey Nelson
- Posted on January 17, 2019
- Updated on January 23, 2019
- 3474 Views
Configuration of VXLAN overlay using EVPN allows for extension of Layer 2 (L2) or Layer 3 (L3) networks across