11. Handling of Multi-destination Traffic

11. Handling of Multi-destination Traffic

Procedures are required for a given PE to send broadcast or multicast traffic received from a CE encapsulated in a given Ethernet tag (VLAN) in an EVPN instance to all the other PEs that span that Ethernet tag (VLAN) in that EVPN instance. In certain scenarios, as described in Section 12 ("Processing of Unknown Unicast Packets"), a given PE may also need to flood unknown unicast traffic to other PEs.

The PEs in a particular EVPN instance may use ingress replication, P2MP LSPs, or MP2MP LSPs to send unknown unicast, broadcast, or multicast traffic to other PEs.

Each PE MUST advertise an "Inclusive Multicast Ethernet Tag route" to enable the above. The following subsection provides the procedures to construct the Inclusive Multicast Ethernet Tag route. Subsequent subsections describe its usage in further detail.