Distributed virtual network topology control mechanism in GMPLS-based multiregion networks

Authors:
K. Shiomoto;E. Oki;W. Imajuku;S. Okamoto;N. Yamanaka
Affiliations:
NTT Network Innovation Labs., NTT Corp., Tokyo, Japan;-;-;-;-
Venue:
IEEE Journal on Selected Areas in Communications
Year:
2006

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Abstract

This paper proposes a distributed virtual network topology (VNT) reconfiguration method for Internet Protocol over a wavelength-division-multiplexing network under dynamic traffic demand. We have developed a simple heuristic algorithm for calculating the VNT for distributed control. A generalized multiprotocol label switching (GMPLS)-based routing protocol has been developed. The VNT is quickly reconfigured by setting up and/or tearing down lightpaths using a GMPLS signaling protocol. Traffic demand is measured at the ingress node and advertised by the extended GMPLS routing protocol. Performance of the proposed method is investigated using variable traffic model.