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Encapsulation When multiple PMSIs are aggregated into a single tunnel, how to demux the packets Unicast Tunnels: MPLS Label (downstream-assigned) Don’t want separate IP dest addr per PE per MVPN Multicast Tunnels: MPLS Label (upstream-assigned) When PIM messages are unicast: MPLS downstream-assigned label RD (or RT) in PIM message Ensuring agreement (among PEs) on encaps |