A Per-Domain Path Computation Method for Establishing Inter-Domain Traffic Engineering (TE) Label Switched Paths (LSPs)
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From: The IESG <firstname.lastname@example.org> To: IETF-Announce <email@example.com> Cc: Internet Architecture Board <firstname.lastname@example.org>, RFC Editor <email@example.com>, ccamp mailing list <firstname.lastname@example.org>, ccamp chair <email@example.com> Subject: Protocol Action: 'A Per-domain path computation method for establishing Inter-domain Traffic Engineering (TE) Label Switched Paths (LSPs)' to Proposed Standard The IESG has approved the following document: - 'A Per-domain path computation method for establishing Inter-domain Traffic Engineering (TE) Label Switched Paths (LSPs) ' <draft-ietf-ccamp-inter-domain-pd-path-comp-07.txt> as a Proposed Standard This document is the product of the Common Control and Measurement Plane Working Group. The IESG contact persons are Ross Callon and David Ward. A URL of this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-ccamp-inter-domain-pd-path-comp-07.txt
Technical Summary This document specifies a per-domain path computation technique for establishing inter-domain Traffic Engineering (TE) Multiprotocol Label Switching (MPLS) and Generalized MPLS (GMPLS) Label Switched Paths (LSPs). In this document a domain refers to a collection of network elements within a common sphere of address management or path computational responsibility such as IGP areas and Autonomous Systems. Per-domain computation applies where the full path of an inter-domain TE LSP cannot be or is not determined at the ingress node of the TE LSP, and is not signaled across domain boundaries. This is most likely to arise owing to TE visibility limitations. The signaling message indicates the destination and nodes up to the next domain boundary. It may also indicate further domain boundaries or domain identifiers. The path through each domain, possibly including the choice of exit point from the domain, must be determined within the domain. Working Group Summary no dissent reported. There are other possible choices for inter-AS or inter-domain path computation (such as PCE). This document describes one choice. Protocol Quality Ross Callon reviewed the spec for the IESG. Adrian Farrel and Deborah Brungard (WG co-chairs) have also both reviewed the spec.