I-D ACTION:draft-ietf-ccamp-sdhsonet-control-03.txt

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

	Title		: Framework for GMPLS-based Control of SDH/SONET Networks
	Author(s)	: G. Bernstein, et al.
	Filename	: draft-ietf-ccamp-sdhsonet-control-03.txt
	Pages		: 30
	Date		: 2004-7-15
	
The suite of protocols that defines Multi-Protocol Label Switching 
(MPLS) is in the process of enhancement to generalize its 
applicability to the control of non-packet based switching, that is, 
optical switching.  One area of prime consideration is to use these 
generalized MPLS (GMPLS) protocols in upgrading the control plane of 
optical transport networks.  This document illustrates this process 
by describing those extensions to MPLS protocols that are directed 
towards controlling SONET/SDH networks.  SONET/SDH networks make 
very good examples of this process since they possess a rich 
multiplex structure, a variety of protection/restoration options, 
are well defined, and are widely deployed. The document discusses 
extensions to MPLS routing protocols to disseminate information 
needed in transport path computation and network operations, 
together with the extensions to MPLS label distribution protocols 
needed for the provisioning of transport circuits. New capabilities 
that an MPLS control plane would bring to SONET/SDH networks, such 
as new restoration methods and multi-layer circuit establishment, 
are also discussed.

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