A Centralized Dynamic RWA Protocol for All-Optical WDM Networks

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Executive Summary

In this paper, the authors present the design of a Centralized Dynamic RWA Protocol (CDRP) in which the number of available free wavelengths and blocking probability parameters are considered for selecting the optimal paths. In this protocol, whenever a request comes to a source it sends the information to Centralized Management System (CMS-1) and the CMS-1 calculates number of available free wavelengths on each path and simultaneously the CMS-I intimate the source to transmit the request through all the paths. Based on the number of packets reached the destination CMS-1 computes the blocking probabilities of all the paths and assigns Optimal primary and backup paths based on blocking probability and number of available free wavelengths.

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