International Conference on Instrumentation, Measurement, Circuits and Systems (ICIMCS 2011)
152 Adaptive Path Selection Strategy for Dynamic Traffic Grooming in Optical Mesh Networks
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This paper presents one adaptive path selection scheme for dynamic traffic grooming in the DWDM networks. With using of this scheme, the network can tackle the propagation of congestion problem caused by excessive utilization of alternate path in IP/MPLS layer in IP/MPLS over WDM network model, which was nearly not concerned by route scheme in traditional traffic grooming research, herein the presented scheme is deployed to deal with this problem by employing a cost function which is designed to assign cost weight to each existed lightpath and each new lightpath that needed to be set up to serve the newly arrived LSP request, and then shortest path algorithm takes the weighted integrated topology as input and returns a path with least cost for the LSP request to be deployed. The scheme and traditional traffic grooming policy by extensive simulation are compared, and the result shows an improvement in block rate under different traffic models.