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This draft is a work item of the Common Control and Measurement Plane Working Group of the IETF.
Title : A Per-domain path computation method for
establishing Inter-domain Traffic
Engineering (TE) Label Switched Paths (LSPs)
Author(s) : J. Vasseur, et al.
Filename : draft-ietf-ccamp-inter-domain-pd-path-comp-04.txt
Pages : 21
Date : 2007-2-20
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.
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