Performance Evaluation of Path Length based Routing Strategies for Survivable WDM Network

Abstract

The Wavelength routed optical network employs well preconfigured optical lightpaths to carry the traffic of users to communicate in the internet at an increasingly huge data rate. The optical network requires lightpaths to maintained, which has to be optimal to route the data traffic between a source to a destination. In most cases at such high data rate, the fault tolerant capability requires in wavelength routed optical network. Therefore to better utilize the resources the key challenge is to how intelligently route the traffic to the working and protection paths in an optical network. In this paper effect of path length in survivable routing and wavelength assignment in the wavelength division multiplexing networks have addressed. Here we investigated and evaluated that how the length of path affects the performance of the network in the selection of working primary paths and protection paths for dynamic traffic. Proposed scheme of path selection attempts to perform individual optimization for each connection request. The simulation results on various networks reveal that path length has a significant impact on the lightpaths selection and affects the call acceptance ratio and quality of network significantly.