Limit unknown multicast traffic on multicast-router interfaces

Limit the flooding of L2 multicast streams to multicast-router interfaces on a per VLAN or bridge domain level. Limit unknown multicast traffic by restricting the flooding of multicast data to the multicast-router interface based on IGMP or Multicast Listener Discovery (MLD) join messages to efficiently utilize bandwidth. To enable this feature, use the no-flood-to-multicast-router-interfaces configuration statement.

In an Ethernet VPN (EVPN) environment, prevent unknown multicast streams from being sent to EVPN Provider Edges (PEs) by sending EVPN Type-3 routes with multicast extended community flags and IGMP/MLD snooping proxy flags set.