Version 32.3 adds the ability to configure IPv4 Protocol Independent Multicast (PIM) traffic over GRE tunnels. PIM control packets are exchanged between GRE tunnel endpoints, forming a PIM neighborship across the GRE tunnel. Similar to IPv4 unicast support on GRE tunnels, multicast data packets are routed from a tenant interface to the far end of the IPv4 GRE tunnel. The IPv4 next-hop for the multicast packets is the IPv4 tunnel IP of the BGP neighbor.
ExtremeSwitching 5520 and 5720 series switches
This feature has the following limitations: