I-D ACTION:draft-ietf-pce-brpc-02.txt

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A New Internet-Draft is available from the on-line Internet-Drafts 
directories.
This draft is a work item of the Path Computation Element Working Group of the IETF.

	Title		: A Backward Recursive PCE-based Computation 
                          (BRPC) procedure to compute shortest inter-
                           domain Traffic Engineering Label Switched Paths
	Author(s)	: J. Vasseur
	Filename	: draft-ietf-pce-brpc-02.txt
	Pages		: 16
	Date		: 2006-12-15
	
The ability to compute constrained shortest Traffic Engineering (TE)
   Label Switched Paths (LSPs) in Multiprotocol Label Switching (MPLS)
   and Generalized MPLS (GMPLS) networks across multiple domains (where
   a domain is referred to as a collection of network elements within a
   common sphere of address management or path computational
   responsibility such as IGP areas and Autonomous Systems) has been
   identified as a key requirement .  This document specifies a
   procedure relying on the use of multiple Path Computation Elements
   (PCEs) in order to compute such inter-domain shortest constraint
   paths along a determined sequence of domains, using a backward
   recursive path computation technique while preserving confidentiality
   across domains, which is sometimes required when domains are managed
   by different Service Providers.

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