- Written by Lavanya Conjeevaram
- Posted on September 11, 2017
- Updated on February 6, 2022
- 6803 Views
Starting EOS release 4.15.2F, the ability to re number front panel ports of 7050QX 32S is supported.
- Written by Gurpreet Singh
- Posted on September 30, 2015
- Updated on June 15, 2018
- 6795 Views
This feature enables user to modify QoS parameters for SVI traffic (L3 VLAN) based on ACL classification. The QoS
- Written by Shashank Hegde
- Posted on September 30, 2015
- Updated on September 30, 2015
- 6459 Views
The active active neutron controller support in CVX enables the deployment of highly available neutron service with
- Written by Anoop Dawani
- Posted on September 30, 2015
- Updated on September 30, 2015
- 6448 Views
This article describes changes to the platform command 'show platform fm6000 agileports'. Earlier this command was
- Written by Anoop Dawani
- Posted on September 30, 2015
- Updated on February 6, 2022
- 7405 Views
This feature detects whether a given EOS image is MLAG ISSU compatible with the currently running version on a switch.
- Written by Akshay Gattani
- Posted on September 30, 2015
- Updated on February 7, 2022
- 7128 Views
BGP additional paths is an enhancement that allows a BGP router to advertise and receive multiple distinct paths for
- Written by Qin Zhang
- Posted on September 30, 2015
- Updated on September 30, 2015
- 7737 Views
The BGP idle restart interval feature allows an idle BGP peer session to automatically restart after a configurable
- Written by Manoj Agiwal
- Posted on September 30, 2015
- Updated on July 12, 2024
- 17676 Views
BGP Non Stop Forwarding (NSF) aims to minimize the traffic loss when the the following scenarios occur:
- Written by Abhiram Kalluru
- Posted on September 30, 2015
- Updated on September 30, 2015
- 6642 Views
Nexthop Groups is a feature that allows users to manually configure a set of nexthops by specifying their nexthop
- Written by Sharad Birmiwal
- Posted on September 30, 2015
- Updated on September 30, 2015
- 6888 Views
The BGP selective route download feature allows learning and advertising BGP prefixes without installing them in
- Written by Yitao (Eric) Wu
- Posted on September 30, 2015
- Updated on September 30, 2015
- 6946 Views
BGP sFlow export is to add BGP route information in sFlow sample packet is the destination IP matches a BGP route. Prior
- Written by Anoop Dawani
- Posted on September 30, 2015
- Updated on April 5, 2016
- 7042 Views
Bidirectional Protocol Independent Multicast (PIM) allows routers to build trees to deliver multicast traffic
- Written by Pandurangan R S
- Posted on September 11, 2017
- Updated on September 11, 2017
- 6936 Views
Configurable TPID enables TPID to be configured per switchport (default TPID on switchport is 0x8100) on
- Written by Anupama Srivastava
- Posted on September 30, 2015
- Updated on February 8, 2022
- 6266 Views
This feature optimizes the utilization of hardware resources by sharing tcam entries for a group of SVIs on which an
- Written by Anoop Dawani
- Posted on September 30, 2015
- Updated on September 30, 2015
- 6542 Views
The 7250X and 7300 series use an optimized internal CLOS design with multiple port ASICs interconnected via Fabric
- Written by Prasanth Sasidharan
- Posted on September 30, 2015
- Updated on February 8, 2022
- 6374 Views
Fallback PBR policy enables an alternate policy to be active when PBR policy attached to an interface is being
- Written by Syed Rahi
- Posted on September 30, 2015
- Updated on February 7, 2022
- 6168 Views
When a user configures IPv6 ACLs, by default, the system automatically includes two additional rules : a default
- Written by Qin Zhang
- Posted on September 30, 2015
- Updated on July 21, 2023
- 6315 Views
By default, inner IP header of a GRE packet is used for LAG hashing. With this feature, LAGs can hash GRE traffic
- Written by Anoop Dawani
- Posted on September 30, 2015
- Updated on November 26, 2024
- 7383 Views
Hardware Table Capacity Monitoring is a new feature to keep track of the capacity and utilization of various hardware forwarding resources and generate alerts/syslogs when the utilization exceeds a threshold value. Users can keep track of the current usage statistics using a single show command, and also configure thresholds on a per-resource basis, to be notified about any high-utilization upfront, before reaching any resource limits. The Main use-case would be for troubleshooting in overflow situations and avoid overflows altogether by taking corrective actions on high utilization.
- Written by Avininder Grewal
- Posted on September 30, 2015
- Updated on September 30, 2015
- 6466 Views
Arista switches enable high precision time distribution directly in the data path using IEEE1588 Precision Time
- Written by Sarah Chen
- Posted on September 30, 2015
- Updated on September 30, 2015
- 7100 Views
IP Source Guard (IPSG) is a security feature that can help prevent IP spoofing attacks. It filters inbound IP packets
- Written by Kiranmayi Kasarapu
- Posted on September 30, 2015
- Updated on September 30, 2015
- 6259 Views
With this feature, IP packets matching a static Nexthop Group route can be encapsulated within an IP in IP tunnel and
- Written by Anoop Dawani
- Posted on September 30, 2015
- Updated on February 5, 2022
- 6251 Views
Nexthop groups in EOS currently only support IPv4 entries and only IPv4 routes can point to nexthop groups. This
- Written by Dhanashree Nagre
- Posted on March 16, 2022
- Updated on March 13, 2023
- 6993 Views
IPv6 routes of certain prefix lengths can be optimized for enhanced route scale on R/R2 series platforms. This TOI explains the usage of these optimizations.
- Written by Anoop Dawani
- Posted on September 30, 2015
- Updated on February 6, 2022
- 6197 Views
Bidirectional Forwarding Detection(BFD) is a low overhead protocol designed to provide rapid detection of
- Written by Kamala R
- Posted on September 30, 2015
- Updated on July 20, 2023
- 6810 Views
The difference between the two forms of authentication is in the level of security provided. In case of clear text authentication, the password is specified as text in the authentication TLV, making it possible for an attacker to break the authentication by sniffing and capturing IS-IS PDUs on the network.
- Written by Nandan Saha
- Posted on September 30, 2015
- Updated on September 30, 2015
- 6226 Views
By default if there's a hostname configured on the switch, it is used as the IS IS hostname. It is also possible to
- Written by Arpit Bansal
- Posted on September 30, 2015
- Updated on September 30, 2015
- 6312 Views
An IS IS router can be configured as Level 1 2 which can form adjacencies and exchange routing information with both
- Written by Arunprakash Sekar
- Posted on September 30, 2015
- Updated on September 30, 2015
- 6402 Views
IS IS Multi Topology support enables an IS IS router to compute a separate topology for IPv4 and IPv6 links in the
- Written by Arpit Bansal
- Posted on September 30, 2015
- Updated on April 22, 2020
- 6715 Views
Level 1 2 routers set attached bit in their Level 1 LSPs to indicate their reachability to the rest of the network. A
- Written by Bharath Somayaji
- Posted on September 30, 2015
- Updated on March 7, 2024
- 6572 Views
SPF Timers can be used in IS-IS to throttle the frequency of shortest-path-first (SPF) computations. In networks with a lot of churn, using these timers will help in containing the effect of network disruptions arising out of frequent SPF runs.
- Written by Aditya Gujral
- Posted on September 30, 2015
- Updated on September 30, 2015
- 6192 Views
This feature adds Intermediate System to Intermediate System (IS IS) support for IP version 6 (IPv6) address family
- Written by Aditya Gujral
- Posted on September 30, 2015
- Updated on February 7, 2022
- 6248 Views
This feature extends the IS IS set overload bit command to support wait for BGP option. In scenarios
- Written by Greg Poloczek
- Posted on September 11, 2017
- Updated on September 11, 2017
- 7328 Views
Arista switches use the hashing algorithm to load balance traffic among LAG (Link Aggregation Group) members
- Written by Peter Lam
- Posted on September 30, 2015
- Updated on December 11, 2023
- 10983 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 Sriram Rajagopalan
- Posted on September 30, 2015
- Updated on February 5, 2022
- 9446 Views
Maintenance mode is a framework to allow for the easy removal of elements of a switch or the entire switch from
- Written by Kevin Amiraux
- Posted on September 30, 2015
- Updated on August 16, 2024
- 11775 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
- 10471 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
- 8588 Views
MLAG currently checks for basic MLAG configuration to be consistent (e.g. domain id) before formation with the peer.
- Written by Kaladhar Musunuru
- Posted on September 30, 2015
- Updated on January 20, 2023
- 7407 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 Prateek Nigam
- Posted on September 30, 2015
- Updated on September 30, 2015
- 6373 Views
Action TTL decrement in an OpenFlow flow. OpenFlow 1.3 Group support on DCS 7010 series. Clearing
- Written by Rachee Singh
- Posted on September 30, 2015
- Updated on September 30, 2015
- 6213 Views
In previous releases of EOS, Stub area and NSSA area types were supported for OSPFv3, but without support of the "no
- Written by Anoop Dawani
- Posted on September 30, 2015
- Updated on July 13, 2018
- 7063 Views
Policy Based Routing (PBR) provides the flexibility of routing according to custom defined policies in a way that
- Written by Veluchamy Dinakaran
- Posted on September 30, 2015
- Updated on September 30, 2015
- 6718 Views
This feature enables detection of egress queues that are unable to transmit packets for prolonged periods of time
- Written by Padmini Misra
- Posted on September 30, 2015
- Updated on September 30, 2015
- 7015 Views
PIM VRF feature adds VRF support to these existing multicast protocols: PIM SM, PIM BSR, IGMP and MSDP.
- Written by Salam Noureddine
- Posted on September 30, 2015
- Updated on September 30, 2015
- 6166 Views
This feature makes ARP and ND packets use a higher priority output queue when software forwarded on the switch. Doing
- Written by Dan Cunningham
- Posted on September 30, 2015
- Updated on September 30, 2015
- 8926 Views
Forward Error Correction (FEC) is required with some QSFP100 media to achieve error free operation of the link when
- Written by Anoop Dawani
- Posted on September 30, 2015
- Updated on February 4, 2016
- 10910 Views
Some data plane features on some switch platforms may require packets to be recirculated through the switch chip in
- Written by Anoop Dawani
- Posted on September 30, 2015
- Updated on February 7, 2022
- 5624 Views
This feature allows routing traffic across two Vrf domains on the same switch using an external loopback cable
- Written by Anoop Dawani
- Posted on September 30, 2015
- Updated on October 1, 2015
- 6124 Views
Secondary private VLAN trunk ports are introduced in the EOS 4.15.2F release. This feature can