Signaling RSVP-TE P2MP LSPs in an Inter-domain Environment
Point-to-MultiPoint (P2MP) Multiprotocol Label Switching (MPLS) and Generalized MPLS (GMPLS) Traffic Engineering Label Switched Paths (TE LSPs) may be established using signaling techniques described in [RFC4875]. However, [RFC4875] does not Expires August 2007 [page 1] draft-ali-mpls-inter-domain-p2mp-rsvp-te-lsp-00.txt address many issues that comes when a P2MP-TE LSP is signaled in a multi-domain networks. Specifically, one of the issues in multi-domain networks is how to allow computation of a loosely routed P2MP-TE LSP such that it is remerge free. This document provides a framework and required protocol extensions needed for establishing and controlling P2MP MPLS and GMPLS TE LSPs in multi-domain networks. This document borrows inter-domain TE terminology from [RFC4726], e.g., for the purposes of this document, a domain is considered to be any collection of network elements within a common sphere of address management or path computational responsibility. Examples of such domains include Interior Gateway Protocol (IGP) areas and Autonomous Systems (ASes). Conventions used in this document In examples, "C:" and "S:" indicate lines sent by the client and server respectively.