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IEICE TRANSACTIONS on Communications

Framework for PCE Based Multi-Layer Service Networks

Mallik TATIPAMULA, Eiji OKI, Ichiro INOUE, Kohei SHIOMOTO, Zafar ALI

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Summary :

Implementing the fast-responding multi-layer service network (MLSN) functionality will allow the IP/MPLS service network logical topology and Optical Virtual Network topology to be reconfigured dynamically according to the traffic pattern on the network. Direct links can be created or removed in the logical IP/MPLS service network topology, when either extra capacity in MLSN core is needed or existing capacity in core is no longer required. Reconfiguring the logical and virtual network topologies constitute a new manner by which Traffic Engineering (TE) can solve or avoid network congestion problems and service degradations. As both IP and optical network layers are involved, this is called Multi-layer Traffic Engineering. We proposed border model based MLSN architecture in [5]. In this paper, we define the realization of Multi-Layer TE functions using Path Computation Element (PCE) for Border model based MLSN. It defines nodal requirements for multi-layer TE. Requirements of communication protocol between PCC (Path Computation Client) and PCE is introduced. It presents Virtual Network Topology (VNT) scenarios and steps involved along with examples for PCE-based VNT reconfiguration triggered by network failure, where VNT is a set of different layer's network resource accumulation.

Publication
IEICE TRANSACTIONS on Communications Vol.E90-B No.8 pp.1903-1911
Publication Date
2007/08/01
Publicized
Online ISSN
1745-1345
DOI
10.1093/ietcom/e90-b.8.1903
Type of Manuscript
Special Section SURVEY PAPER (Special Section on Feature Topics on Latest Trends in Optical Networks)
Category
Traffic Engineering and Multi-Layer Networking

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