Auto-discovery via EVPN

VTEPs use BGP EVPN routes to discover VTEP neighbors, establish VxLAN tunnels, and assign the tunnels to VxLANs.

  • IMET route—VTEPs advertise their VxLAN IDs through IMET routes. If two VTEPs have the same VxLAN ID, they automatically establish a VxLAN tunnel and assign the tunnel to the VxLAN. This can be used to create the replication list for the forwarding of Broadcast, Unknown Unicast, and Multicast (BUM) traffic.

  • MAC/IP advertisement route and IP prefix advertisement route—In the EVPN deployment, VTEPs advertise MAC/IP advertisement routes or IP prefix advertisement routes which carry export targets. When a VTEP receives a route, it compares the export targets of the route with the local import targets.


The current release supports only MAC/IP advertisement routes and Inclusive multicast Ethernet tag (IMET) routes.