[Pce] I-D ACTION:draft-ietf-pce-inter-layer-frwk-10.txt

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This draft is a work item of the Path Computation Element Working Group of the IETF.

	Title		: Framework for PCE-Based Inter-Layer MPLS and GMPLS Traffic Engineering
	Author(s)	: E. Oki, T. Takeda, J. Le Roux, A. Farrel
	Filename	: draft-ietf-pce-inter-layer-frwk-10.txt
	Pages		: 33
	Date		: 2009-3-26
	
A network may comprise multiple layers. It is important to globally 
   optimize network resource utilization, taking into account all 
   layers, rather than optimizing resource utilization at each layer 
   independently. This allows better network efficiency to be achieved 
   through a process that we call inter-layer traffic engineering. The 
   Path Computation Element (PCE) can be a powerful tool to achieve 
   inter-layer traffic engineering. 
    
   This document describes a framework for applying the PCE-based 
   architecture to inter-layer Multiprotocol Label Switching (MPLS) and 
   Generalized MPLS (GMPLS) traffic engineering. It provides 
   suggestions for the deployment of PCE in support of multi-layer 
   networks. This document also describes network models where PCE    performs inter-layer traffic engineering, and the relationship 
   between PCE and a functional component called the Virtual Network 
   Topology Manager (VNTM).

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