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Signaling L2 MVPN requires signaling procedures for the root PE to signal P2MP PWs to leaf PEs. P2MP PSN tunnels carry the P2MP PW traffic With a P2MP PW demultiplexor that can be used to identify individual root CEs and enables carrying traffic for multiple P2MP PWs (which may belong to different L2VPNs) over the same P2MP PSN tunnel. Using upstream assigned MPLS label as the P2MP PW de-multiplexor. P2MP PW de-multiplexor is signaled using mechanisms described in draft-ietf-l2vpn-vpls-mcast |