I-D ACTION:draft-ietf-ccamp-lsp-stitching-01.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-01.txt
	Pages		: 19
	Date		: 2005-7-15
	
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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