Analysis of GMPLS architectures, topologies and algorithms

Abstract

Generalized multiprotocol label switching (GMPLS) promises a unified control plane for a variety of switching technologies by separating the control plane from the forwarding plane. In this paper a brief overview of the ongoing research on different aspects of GMPLS is first presented. Then a comparison is conducted between the network access layer ( N L ) and the optical/physical layer in GMPLS based on the restoration capabilities and the performance analysis of channel connectivity and the traffic aggregation in the two layers. At last the logical channel connections of the WNAL layer are compared to the physical channel connections of the opticaUphysical layer where the probability of blocking (Pb) is calculated considering both wavelength conversion and nonwavelength conversion cases.