- Written by Alex Volinsky
- Posted on April 30, 2021
- Updated on June 11, 2021
- 7621 Views
400GBASE ZR transceiver is the industry’s first multi vendor DWDM standard, a Digital Coherent Optical module
- Written by Graeme Rennie
- Posted on March 31, 2017
- Updated on April 18, 2022
- 7610 Views
This article describes a feature for Tap Aggregation mode, which strips IEEE 802.1BR E-Tag and Cisco VN-Tag headers from all tagged packets received on tap interface before delivering them out of tool interfaces.
- Written by Will Rideout
- Posted on February 16, 2021
- Updated on February 22, 2021
- 6770 Views
BFD (Bidirectional Forwarding Detection) session telemetry allows for the collection of per session statistics as
- Written by Augusto Wong
- Posted on February 17, 2021
- Updated on October 21, 2022
- 10150 Views
DHCP Relay feature forwards DHCP packets between client and server when the DHCP Server is not in the same broadcast domain as the client. DHCP Relay should be configured on the gateway interface (SVI/ L3 interface ) for the clients. DHCP Relay agent creates a new unicast DHCP packet and sets the giaddr field to the ‘primary’ IP address of the interface on which DHCP request packet is received. The modified request packet is then relayed to one or more configured DHCP servers. DHCP server assigns ip address to client from the pool corresponding to giaddr field.
- Written by Pawel Kurdybacha
- Posted on February 16, 2021
- Updated on February 16, 2021
- 6672 Views
The feature allows assigning of class E addresses to interfaces by default with no option to turn that off and routing
- Written by Aman Aman-Ul-Haq
- Posted on March 9, 2021
- Updated on December 1, 2023
- 10377 Views
The Segment security feature provides the convenience of applying policies on segments rather than interfaces or subnets. Hosts/networks are classified into segments based on prefixes. Grouping prefixes into segments allows for definition of policies that govern flow of traffic between segments.
- Written by Shamit Kapadia
- Posted on February 23, 2021
- Updated on February 5, 2022
- 6086 Views
In EVPN deployment with VXLAN underlay when an EVPN type 5 prefix is imported into an IP VRF, the IGP cost of the underlay
- Written by Andy Cheng
- Posted on April 22, 2021
- Updated on April 22, 2021
- 11075 Views
InfluxDB telemetry streaming feature enables telemetry data collection with Telegraf on box, and allows streaming
- Written by Ramakrishnan G
- Posted on February 23, 2021
- Updated on June 22, 2022
- 6389 Views
In a multihomed EVPN MPLS configuration, BUM packets sent from a non-designated forwarder (Non-DF) PE to a designated forwarder (DF) PE must carry ESI label advertised by the egress DF PE.
- Written by Conor Hopkins
- Posted on March 16, 2021
- Updated on March 16, 2021
- 6792 Views
The current behaviour on R series products is to drop all packets marked for drop by the chip Packet Processor in the
- Written by Nikhil Satish Pai
- Posted on March 24, 2021
- Updated on March 30, 2021
- 6773 Views
This feature may be used for redistributing OSPFv2 leaked and non leaked routes from one instance to another when
- Written by Emil Maric
- Posted on February 16, 2021
- Updated on July 8, 2024
- 6995 Views
Routes covered by a resilient equal-cost multi-path (RECMP) prefix are types of routes that make use of hardware tables dedicated for equal-cost multi-path (ECMP) routing. Resilient ECMP deduping is a new feature wherein the switch will reactively attempt to reduce the number of ECMP hardware table entries allocated by forcing routes that share the same set of next hops but point to different hardware table entries to point to the same hardware table entry when hardware resource utilization is high. Forcing RECMP routes to change the hardware table entry that they point to may potentially cause a traffic flow disruption for any existing flows going over that route. The deduping process will attempt to minimize the amount of potential traffic loss caused.
- Written by Jeevan Kamisetty
- Posted on February 26, 2021
- Updated on July 18, 2023
- 10131 Views
Sampled flow tracking with IPFIX export is supported on most of the Arista platforms. User configured sampling rate is used for sampling in ingress and/or egress direction on the configured interfaces. An EOS software agent on CPU processes samples received from hardware, samples are used to create flow records that are exported to IPFIX collectors. Refer to Sampled flow tracking TOI for additional details.
- Written by Yongxiang Chen
- Posted on February 19, 2021
- Updated on February 19, 2021
- 7253 Views
4.25.2F introduces storm control with packet per second support in the platforms listed below. TOI describing the
- Written by Matthew Carrington-Fair
- Posted on February 22, 2021
- Updated on May 6, 2021
- 7157 Views
Prior to 4.25.2F, support for BGP PIC was restricted to locally identifiable failures such as link failures. If a
- Written by Sushil Yadav
- Posted on March 17, 2021
- Updated on March 17, 2021
- 6012 Views
By default, sFlow samples that are generated have a fixed size: 128 bytes. This feature adds support for a
- Written by Nader Lahouti
- Posted on February 19, 2021
- Updated on February 19, 2021
- 5697 Views
This feature addresses cases where the deployment infrastructure in an OpenStack setup which manages Virtual
- Written by Shyam Kota
- Posted on February 23, 2021
- Updated on July 12, 2023
- 8549 Views
This feature terminates GRE packets on a TapAgg switch by stripping the GRE header and then letting the decapped packets go through the normal TapAgg path. With this feature, we can use an L3 GRE tunnel to transit tapped traffic to the TapAgg switch over an L3 network. That would widely extend the available use cases for TapAgg.
- Written by Bin Wang
- Posted on February 22, 2021
- Updated on December 14, 2023
- 5620 Views
In EOS 4.25.2F release, VRRP support is enabled on the following platforms,. DCS 7280R3. DCS 7500R3.