I-D ACTION:draft-ietf-ccamp-lsp-stitching-00.txt

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This draft is a work item of the Common Control and Measurement Plane Working Group of the IETF.

	Title		: Label Switched Path Stitching with Generalized MPLS Traffic Engineering
	Author(s)	: A. Ayyangar, J. Vasseur
	Filename	: draft-ietf-ccamp-lsp-stitching-00.txt
	Pages		: 17
	Date		: 2005-4-1
	
In certain scenarios, there may be a need to combine together two
   different Generalized Multi-Protocol Label Switching (GMPLS) Label
   Switched Paths (LSPs) such that in the data plane, a single
   end-to-end (e2e) LSP is achieved and all traffic from one LSP is
   switched onto the other LSP.  We will refer to this as "LSP
   stitching".  This document covers cases where: a) the node performing
   the stitching does not require configuration of every LSP pair to be
   stitched together b) the node performing the stitching is not the
   egress of any of the LSPs c) LSP stitching not only results in an
   end-to-end LSP in the data plane, but there is also a corresponding
   end-to-end LSP (RSVP session) in the control plane.  It might be
   possible to configure a GMPLS node to switch the traffic from an LSP
   for which it is the egress, to another LSP for which it is the
   ingress, without requiring any signaling or routing extensions
   whatsoever, completely transparent to other nodes.  This will also
   result in LSP stitching in the data plane.  However, this document
   does not cover this scenario of LSP stitching.

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