TOI Author :: Shelly Chang

Evpn multicast IRB allows multicast traffic from the external Pim domain to flow through the EVPN network via PIM EVPN Gateway Designated Router (PEG-DR). The solution won’t work when the external Pim source or RP is not connected to PEG-DR in the external Pim domain. EVPN Multicast Transit solves the issue by allowing any PEG with transit configured (PEG-Transit) to act as PEG-DR.

This solution allows delivery of both IPv4 and IPv6 multicast traffic in an IP-VRF using an IPv6 multicast in the underlay network. The protocol used to build multicast trees in the underlay network is IPv6 PIM-SSM.

This feature allows PIMv4 to work with Multiprotocol BGP (MP-BGP), where IPv4 prefix routes are reachable via IPv6 next-hops.

This feature introduces hardware forwarding support of IPv4 multicast traffic over IPv4 GRE tunnel interfaces in Arista Switches. Multicast source traffic can reach the receivers which are separated by an IP cloud which is not configured for IP multicast routing by utilizing a GRE tunnel.

Multicast Only Fast Reroute (MoFRR) is a feature based on PIM sparse mode (PIM SM) protocol to minimize packet loss in a