- Written by Ravi Teja Guthikonda
- Posted on 1月 21, 2019
- Updated on 5月 20, 2024
- 7744 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 1月 17, 2019
- Updated on 1月 21, 2019
- 7705 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 1月 18, 2019
- Updated on 3月 22, 2024
- 17410 Views
In conventional VXLAN deployments, each MLAG pair of switches are represented as a common logical VTEP. VXLAN traffic can be decapsulated on either switch. In some networks, there are hosts that are singly connected to one of the MLAG pair.
- Written by Shyam Kota
- Posted on 1月 21, 2019
- Updated on 1月 21, 2019
- 7771 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 1月 21, 2019
- Updated on 1月 21, 2019
- 7968 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 1月 18, 2019
- Updated on 1月 21, 2019
- 7535 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 2月 8, 2017
- Updated on 5月 17, 2018
- 10039 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 1月 23, 2019
- Updated on 1月 23, 2019
- 8455 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 1月 18, 2019
- Updated on 1月 18, 2019
- 6850 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 1月 17, 2019
- Updated on 1月 23, 2019
- 7500 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 1月 17, 2019
- Updated on 10月 9, 2024
- 10392 Views
Selective ARP install is the selective programming of remote ARPs in hardware as received through EVPN Type 2 MAC-IP routes in an EVPN VXLAN/ MPLS Integrated Routing and Bridging (IRB) scenario. Instead of installing every MAC+IP binding received from EVPN into the hardware, the switch installs them only when there is routed traffic destined to the IP, thereby saving TCAM space on the switch. However, there is a tradeoff as there is an initial one-time latency to install the hardware TCAM entry on the first flow of routed traffic to the IP.
- Written by Prateek Nigam
- Posted on 1月 17, 2019
- Updated on 1月 23, 2019
- 7690 Views
The following QoS features are supported on the vEOS router (DPDK flavor):. The port can be configured
- Written by Chunxi Yu
- Posted on 1月 21, 2019
- Updated on 1月 21, 2019
- 3833 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 1月 23, 2019
- Updated on 1月 23, 2019
- 6811 Views
4.21.3F introduces support for ‘Replace AS Path’ in the multi agent routing protocol model.
- Written by Shyam Kota
- Posted on 1月 22, 2019
- Updated on 1月 22, 2019
- 8351 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 1月 22, 2019
- Updated on 1月 22, 2019
- 6054 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 1月 18, 2019
- Updated on 1月 18, 2019
- 7034 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 1月 18, 2019
- Updated on 9月 15, 2023
- 11885 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 1月 17, 2019
- Updated on 1月 18, 2019
- 7292 Views
The MMU watermark counters report the maximum usage of the MMU queues during a given time window. This feature reports
- Written by Eamon Doyle
- Posted on 1月 22, 2019
- Updated on 3月 14, 2019
- 7896 Views
BGP Large Communities, as defined in RFC8092, is now supported within EOS. Both standard (4 octets) and
- Written by Shyam Kota
- Posted on 1月 18, 2019
- Updated on 1月 23, 2019
- 7596 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 1月 18, 2019
- Updated on 1月 23, 2019
- 9752 Views
4.21.3F release supports reading and streaming various OpenConfig configuration and state models over gNMI (gRPC
- Written by Shyam Kota
- Posted on 1月 22, 2019
- Updated on 1月 23, 2019
- 8760 Views
The route map subroutine (referred from here on as sub route map) configuration simplifies routing policies by
- Written by Jesus Villarroel
- Posted on 1月 23, 2019
- Updated on 1月 23, 2019
- 5116 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 1月 21, 2019
- Updated on 4月 6, 2022
- 8502 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 1月 18, 2019
- Updated on 6月 7, 2024
- 7509 Views
This feature enables support for hardware accelerated sFlow while running in Tap Aggregation exclusive mode. This
- Written by Todor Nikolov
- Posted on 1月 17, 2019
- Updated on 1月 23, 2019
- 7677 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 1月 23, 2019
- Updated on 1月 23, 2019
- 7580 Views
This feature provides total ingress MPLS packet and byte counters received per interface. DCS
- Written by Shilpa Santhanam
- Posted on 1月 17, 2019
- Updated on 3月 26, 2025
- 7964 Views
4.21.3F introduces support for the feature on the platforms listed below. The TOI describing the feature support on different versions/platforms is available here.
- Written by Eddie Kibicho
- Posted on 1月 22, 2019
- Updated on 2月 5, 2022
- 5841 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 1月 22, 2019
- Updated on 1月 22, 2019
- 7608 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 1月 17, 2019
- Updated on 1月 23, 2019
- 11339 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 1月 17, 2019
- Updated on 1月 23, 2019
- 8919 Views
Configuration of VXLAN overlay using EVPN allows for extension of Layer 2 (L2) or Layer 3 (L3) networks across