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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, et al.
Filename : draft-ietf-pce-inter-layer-frwk-06.txt
Pages : 1
Date : 2008-1-21
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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