- Written by Hyun Chul Chung
- Posted on June 10, 2020
- Updated on October 14, 2021
- 4323 Views
As of EOS 4.22.0F, EVPN all active multihoming is supported as a standardized redundancy solution. Redundancy
- Written by Kallol Mandal
- Posted on March 3, 2023
- Updated on March 7, 2023
- 1245 Views
In a VXLAN routing setup using VXLAN Controller Service (VCS), this feature will enable the following on a switch that is running as a VCS client.
- Written by Kallol Mandal
- Posted on January 3, 2023
- Updated on January 17, 2023
- 1480 Views
In a VXLAN routing setup using VXLAN Controller Service (VCS), this feature will enable the following on a switch that is running as a VCS client.
- Written by Dongliang Feng
- Posted on September 11, 2023
- Updated on September 11, 2023
- 255 Views
This is achieved by using the next-hop of the static route as the peer IP address for the BFD session. The static route is either installed or removed based on the status of the underlying BFD session. A static route whose next-hop is configured to be tracked by BFD is referred to as a ‘BFD tracked static route’ in the context of this document. This feature is supported for both IPv4 and IPv6 static routes.
- Written by Harish Prabhu
- Posted on April 18, 2022
- Updated on June 2, 2022
- 2768 Views
This feature introduces a new CLI command which disables the above-mentioned propagation of DSCP and ECN bits from the outer IP header.
- Written by Harish Prabhu
- Posted on August 31, 2023
- Updated on September 12, 2023
- 334 Views
By default, the DSCP and ECN bits of VXLAN bridged packets are not rewritten. Currently, for bridged packets undergoing VXLAN encapsulation, the DSCP in the outer IP header is derived from TC and the ECN bits are set to zero. The desired behavior is that the outer IP header should be remarked with ingress packet DSCP and ingress packet ECN. Also, local congestion should be handled correctly.
- Written by Madhu Sudan
- Posted on April 26, 2021
- Updated on April 26, 2021
- 4014 Views
This feature allows a Data Center (DC) operator to incrementally migrate their VXLAN network from IPv4 to IPv6
- Written by Amit Ranpise
- Posted on November 11, 2019
- Updated on June 6, 2022
- 6118 Views
As described in the Multi VTEP MLAG TOI, singly connected hosts can lead to suboptimal peer link utilisation. By
- Written by Arup Raton Roy
- Posted on August 24, 2020
- Updated on December 27, 2021
- 4117 Views
This feature enables support for Macro Segmentation Service (MSS) to insert security devices into the traffic path
- Written by Lavanya Conjeevaram
- Posted on March 31, 2017
- Updated on January 11, 2022
- 6681 Views
Ethernet VPN (EVPN) is an extension of the BGP protocol introducing a new address family: L2VPN (address family
- Written by Jeffrey Nelson
- Posted on March 5, 2020
- Updated on July 31, 2023
- 5721 Views
This feature adds control plane support for inter subnet forwarding between EVPN and IPVPN networks. It also
- Written by Jeffrey Nelson
- Posted on October 28, 2020
- Updated on August 11, 2023
- 9781 Views
This feature adds control plane support for inter subnet forwarding between EVPN networks. This support is achieved
- Written by Alton Lo
- Posted on January 23, 2019
- Updated on January 23, 2019
- 7261 Views
“MLAG Domain Shared Router MAC” is a new mechanism to introduce a new router MAC to be used for MLAG TOR
- Written by Alton Lo
- Posted on April 27, 2020
- Updated on July 14, 2023
- 4137 Views
As described in the L3 EVPN VXLAN Configuration Guide, it is common practice to use Layer 3 EVPN to provide multi
- Written by Xuan Qi
- Posted on March 13, 2020
- Updated on March 13, 2020
- 6352 Views
In EOS 4.22.0F, EVPN VXLAN all active multi homing L2 support is available. A customer edge (CE) device can connect to
- Written by Chris Hydon
- Posted on June 17, 2019
- Updated on July 12, 2023
- 12814 Views
Ethernet VPN (EVPN) networks normally require some measure of redundancy to reduce or eliminate the impact of outages and maintenance. RFC7432 describes four types of route to be exchanged through EVPN, with a built-in multihoming mechanism for redundancy. Prior to EOS 4.22.0F, MLAG was available as a redundancy option for EVPN with VXLAN, but not multihoming. EVPN multihoming is a multi-vendor standards-based redundancy solution that does not require a dedicated peer link and allows for more flexible configurations than MLAG, supporting peering on a per interface level rather than a per device level. It also supports a mass withdrawal mechanism to minimize traffic loss when a link goes down.
- Written by Mitchell Jameson
- Posted on February 5, 2020
- Updated on February 5, 2020
- 3468 Views
This feature enables support for an EVPN VxLAN control plane in conjunction with Arista’s OpenStack ML2 plugin for
- Written by Aadil
- Posted on December 20, 2019
- Updated on December 20, 2019
- 5011 Views
Starting with EOS release 4.22.0F, the EVPN VXLAN L3 Gateway using EVPN IRB supports routing traffic from one IPV6
- Written by Alton Lo
- Posted on June 14, 2019
- Updated on October 7, 2019
- 4337 Views
Starting with EOS release 4.22.0F, the EVPN VXLAN L3 Gateway using EVPN IRB supports routing traffic from IPV6 host to
- Written by Kallol Mandal
- Posted on November 14, 2019
- Updated on December 22, 2020
- 5238 Views
Starting with EOS release 4.22.0F, the EVPN VXLAN L3 Gateway using EVPN IRB supports routing traffic from one IPV6
- Written by Aaron Bamberger
- Posted on October 28, 2020
- Updated on October 28, 2020
- 4280 Views
In a traditional EVPN VXLAN centralized anycast gateway deployment, multiple L3 VTEPs serve the role of the
- Written by Mitchell Jameson
- Posted on August 24, 2020
- Updated on February 5, 2022
- 3557 Views
Typical Wi Fi networks utilize a single, central Wireless LAN Controller (WLC) to act as a gateway between the
- Written by Sourav Basu
- Posted on December 9, 2020
- Updated on July 12, 2023
- 7381 Views
In VXLAN networks, broadcast DHCP requests are head-end-replicated to all VXLAN tunnel endpoints (VTEP). If a DHCP relay helper address is configured on more than one VTEP, each such VTEP relays the DHCP request to the configured DHCP server. This could potentially overwhelm the DHCP server as it would receive multiple copies of broadcast packets originated from a host connected to one of the VTEPs.
- Written by Satish Somanchi
- Posted on August 26, 2019
- Updated on September 5, 2019
- 3881 Views
4.22.1F introduces support for ip address virtual for PIM and IGMP in MLAG and Vxlan. On a VLAN, the same IP address can
- Written by Bharathram Pattabhiraman
- Posted on August 31, 2023
- Updated on September 4, 2023
- 446 Views
This solution allows delivery of IPv6 multicast traffic in an IP-VRF using an IPv4 multicast in the underlay network. The protocol used to build multicast trees in the underlay network is PIM Sparse Mode.
- Written by Madhu Sudan
- Posted on June 21, 2020
- Updated on July 3, 2023
- 4632 Views
Several customers have expressed interest in using IPv6 addresses for VXLAN underlay in their Data Centers (DC). Prior to 4.24.1F, EOS only supported IPv4 addresses for VXLAN underlay, i.e., VTEPs were reachable via IPv4 addresses only.
- Written by Adam Morrison
- Posted on January 3, 2022
- Updated on January 3, 2022
- 3131 Views
As of EOS 4.22.0F, EVPN all active multihoming is supported as a standardized redundancy solution. For effective
- Written by Johnny Chen
- Posted on September 15, 2023
- Updated on September 15, 2023
- 168 Views
For traffic mirroring, Arista switches support several types of mirroring destinations. This document describes a new type of mirroring destination in which mirrored traffic is tunneled over VXLAN as the inner packet to a remote VTEP. This feature is useful for when the traffic analyzer is a VTEP reachable over a VXLAN tunnel.
- Written by Bharathram Pattabhiraman
- Posted on August 31, 2023
- Updated on September 4, 2023
- 408 Views
This solution optimizes the delivery of multicast to a VLAN over an Ethernet VPN (EVPN) network. Without this solution IPv6 multicast traffic in a VLAN is flooded to all Provider Edge(PE) devices which contain the VLAN.
- Written by Jeffrey Nelson
- Posted on June 21, 2021
- Updated on February 2, 2023
- 22867 Views
This feature provides the ability to interconnect EVPN VXLAN domains. Domains may or may not be within the same data
- Written by Xuan Qi
- Posted on August 23, 2022
- Updated on October 14, 2022
- 3586 Views
This feature extends the multi-domain EVPN VXLAN feature introduced to support interconnect with EVPN MPLS networks. The following diagram shows a multi-domain deployment with EVPN VXLAN in the data center and EVPN MPLS in the WAN. Note that this is the only supported deployment model, and that an EVPN MPLS network cannot peer with an EVPN MPLS network.
- Written by Swati Patel
- Posted on February 11, 2021
- Updated on November 10, 2021
- 5848 Views
[L2 EVPN] and [Multicast EVPN IRB] solutions allow for the delivery of customer BUM (Broadcast, Unknown unicast
- Written by Bharathram Pattabhiraman
- Posted on February 11, 2021
- Updated on September 21, 2023
- 10858 Views
This solution allows delivery of multicast traffic in an IP VRF using multicast in the underlay network. It builds on
- Written by Swati Patel
- Posted on January 3, 2023
- Updated on July 12, 2023
- 2522 Views
Multicast EVPN IRB solution allows for the delivery of customer BUM (Broadcast, Unknown unicast and Multicast) traffic in L3VPNs using multicast in the underlay network. This document contains only partial information that is new or different for the Multicast EVPN Multiple Underlay Groups solution.
- Written by Kaushik Kumar Ram
- Posted on March 3, 2023
- Updated on March 6, 2023
- 1385 Views
By default, when an SVI is configured on a VXLAN VLAN, then broadcast, unknown unicast, and unknown multicast (BUM) traffic received from the tunnel are punted to CPU. However, sending unknown unicast and unknown multicast traffic to CPU is unnecessary and could have negative side effects. Specifically, these packets take the L2Broadcast CoPP queue to the CPU.
- Written by Lavanya Conjeevaram
- Posted on March 31, 2017
- Updated on April 3, 2017
- 3269 Views
Overlay IPv6 routing over VXLAN Tunnel is simply routing IPv6 packets in and out of VXLAN Tunnels, similar to
- Written by Lavanya Conjeevaram
- Posted on March 13, 2017
- Updated on March 13, 2017
- 2890 Views
EOS currently supports VXLAN L2 integration with external controllers using the Arista OVSDB HW VTEP schema ([HW
- Written by Aaron Bamberger
- Posted on June 5, 2023
- Updated on September 20, 2023
- 756 Views
Enabling “Proxy ARP/ND for Single Aggregation (AG) VTEP Campus Deployments without EVPN” allows an aggregation VTEP to proxy reply to a VXLAN-encapsulated ARP request/NS when the ARP/NS target host is remote and the ARP/ND binding is already learned by the AG VTEP.
- Written by Rohit Maurya
- Posted on June 21, 2021
- Updated on July 13, 2022
- 6186 Views
Private VLAN is a feature that segregates a regular VLAN broadcast domain while maintaining all ports in the same IP
- Written by Kaladhar Musunuru
- Posted on May 4, 2020
- Updated on July 14, 2023
- 3159 Views
This feature introduces support for ACL configuration on VXLAN decapsulated packets. The configured ACL rules will
- Written by Basil Saji
- Posted on January 17, 2022
- Updated on January 17, 2022
- 4308 Views
VXLAN UDP ESP support allows the customer to encrypt traffic between two VXLAN VTEPs. The frame
- Written by Matthew Carrington-Fair
- Posted on February 22, 2021
- Updated on May 6, 2021
- 3552 Views
Prior to 4.25.2F, support for BGP PIC was restricted to locally identifiable failures such as link failures. If a
- Written by Weichen Zhao
- Posted on June 29, 2023
- Updated on June 29, 2023
- 618 Views
Prior to this feature, we supported a maximum of two levels of Forward Equivalence Class (FEC) hierarchies for vxlan routing tunnels in hardware.
- Written by Kallol Mandal
- Posted on April 25, 2022
- Updated on October 28, 2022
- 3233 Views
Overlay IPv6 routing over VXLAN tunnel using an anycast gateway (direct routing) has been previously supported using the “ipv6 virtual-router” configuration for both the data-plane and EVPN (or CVX) control-plane learning environments.
- Written by Naresh Kumar L S
- Posted on February 22, 2022
- Updated on July 12, 2023
- 3414 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 Jialong Chen
- Posted on December 17, 2021
- Updated on October 13, 2022
- 4203 Views
This feature expands Multi Domain EVPN VXLAN to support an Anycast Gateway model as the mechanism for gateway
- Written by Hyun Chul Chung
- Posted on December 23, 2019
- Updated on December 23, 2019
- 3598 Views
This feature enables support for migrating from only using VCS as the control plane to only using EVPN as a control
- Written by Jeffrey Nelson
- Posted on November 12, 2019
- Updated on November 12, 2019
- 3184 Views
VXLAN flood lists are typically configured via CLI or learned via control plane sources such as EVPN. The
- Written by Terence Hui
- Posted on September 1, 2021
- Updated on July 14, 2022
- 3198 Views
Current VXLAN decapsulation logic requires the following hits on affected switches listed in the following
- Written by Swaroop George
- Posted on April 15, 2021
- Updated on February 1, 2022
- 3365 Views
This feature allows selecting Differentiated Services Code Point (DSCP) and Traffic Class (TC) values for packets