Dynamic Routing of Reliability-Differentiated Connections in Optical Burst Switched Networks

Optical burst switching (OBS) is one of the most promising nextgeneration all-optical data transport paradigms. As networks become increasingly distributed and autonomic, Optical Burst Switching becomes the right choice for the next generation optical Internet. In this paper, we propose a mechanism for Dynamic Routing of Reliability-Differentiated connections (DRRDC) in Optical Burst Switched networks. The proposed mechanism consists of two subschemes namely Adaptive Routing, a loss minimization mechanism that selects the least congested route for burst scheduling and Adaptive Burst Cloning, a technique for providing loss recovery in an OBS network. We develop a network simulation model to investigate the proposed DRRDC scheme and compare its performance with the existing prioritized burst scheduling QoS scheme. Our results show that the proposed service differentiation mechanism has a significantly low packet loss compared to the existing prioritized burst scheduling scheme in an optical burst switched network.