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Applications MS-PWs to alleviate scalability concerns in large Service provider networks RSVP-TE tunnel meshness among the PEs for bandwidth-managed PWs Number of targeted LDP sessions maintained by PEs for setting up PWs over an MPLS PSN MS-PWs for Extending PWs to metro and access networks: Conform to today’s network management practices Deal with the increase in number of PEs – scalability concern MS-PWs for extending PWs across provider boundaries to deal with: Confidentiality and security requirements: U-PE addresses in one provider domain not advertised to other-providers’ domains Number of “authenticated” sessions that need to be managed between providers The desire not to extend contiguous PSN tunnels (e.g., TE tunnels) between one provider and another provider Interworking between different PSN tunneling technologies (e.g., MPLS and L2TP) Mainly applies in interconnecting different providers’ networks |