Tunnel Identifier Exchange Mechanism for Ru to inform Rd that a particular tunnel will be used by Ru to transmit MPLS packets with upstream assigned labels to Rd RSVP-TE IF_ID_HOP object RSVP-TE P2MP LSP TLV Extends RSVP-TE P2P Hierarchy to P2MP LSPs. Signals the binding of an “inner P2MP LSP” to an “outer P2MP LSP” IP Multicast Tunnel TLV LDP Interface ID TLV |