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Requirements summary MUST allow setting up P2MP LSPs MUST define a FEC suitable for P2MP forwarding SHOULD rely on unicast routing table for setting up MPLS shortest path trees SHOULD support leaf initiated approach for LSP setup and modification SHOULD avoid data duplication SHOULD avoid routing loops SHOULD minimize recovery upon network failure SHOULD avoid both packet loss and packet duplication during rerouting upon planned maintenance or metric change: Tension? MUST avoid traffic replication on LAN interfaces MUST Support encapsulation in P2P and P2MP TE tunnels MUST support IPv4/IPv6 (control and forwarding) MUST support multi-area LSPs OAM Requirements: MIB module, connectivity checking and path tracing tool, fast failure detection tool MUST support Graceful Restart and Fault Recovery SHOULD scale independently of the number of leaves SHOULD allow setting up P2MP LSPs over a transit non branch legacy LSR MUST not impede the operations of unicast LSPs MAY support Multipoint-to-Multipoint LSPs (MP2MP LSPs) |