Achieving Plasticity in WDM Networks: Application of Biological Evolutionary Model to Network Design

Our previous VNT control method is adaptive to traffic changes. However, performance of VNT is fundamentally decided by the physical infrastructure, and a physical network should be designed so that the adaptiveness of VNT control method can be enjoyed. In this paper, we propose a design method of WDM networks based on a biological evolution model to have adaptability under various traffic fluctuation and traffic growth. Our method determines a set of nodes where transceivers should be added so that the designed network can obtain a plasticity, which represents changeability against the environmental change. Evaluation results for a topology with 19 nodes show that our method accommodates more patterns of traffic fluctuation comparing with an ad-hoc design method.