TOI Author

In an EVPN network, unique route targets are assigned to each VLAN (or a VLAN bundle). For an IRB (Integrated Routing and Bridging) configuration, unique route targets are assigned for each L3-VRF as well.These route targets are statically configured for each VLAN (or a VLAN bundle) and each L3-VRF as well. Starting with 4.35.1F, such route targets for L3-VRFs can now be auto-derived from the corresponding VNI numbers.

EOS currently supports EVPN Multicast by setting up PIM tunnels in the underlay with VXLAN as the transport. While this is an efficient delivery mechanism, it requires PIM to be deployed in the underlay. In certain cases, the overheads of provisioning/maintaining the multicast routers and the multicast routing state in the underlay may be significant. To support such scenarios, Ingress Replication (IR) or Head-End Replication (HER) can be used in the underlay to distribute overlay multicast traffic.

PFC (Priority Flow Control) Watchdog is used to detect a stuck queue because of a PFC storm and take action to ensure