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Multicast VPN—Current State (2) Multicast domain is a set of multicast-enabled VRFs (mVRFs) that can send multicast traffic to each other e.g., VRFs associated with a single customer Maps all (S, G) that can exist in a particular VPN to a single (S, G) group in the P-network This is the Multicast Distribution Tree (MDT) Amount of P-state is a function of # of VPNs rather than # of (S, G)s of all customers This is not as good as unicast, but better than the alternative Mapping is achieved by encapsulating C-packet into P-packet using GRE |