Adaptive Virtual Network Topology Control in WDM-Based Optical Networks

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Virtual Network Topology (VNT) is one efficient way to transfer the IP packet over the wavelength-routed optical networks. In resent years various new services have emerged, and IP traffic has been highly fluctuated. Therefore, adaptability against changes of traffic is one of the most important characteristics to accommodate the IP traffic efficiently. To achieve the adaptability, we have proposed a method for virtual topology controls using an attractor selection model. In this paper, we investigate the adaptability of our virtual topology control via computer simulations. Simulation results indicate that our virtual topology control can successfully adapt to changes of traffic around twice higher variance comparing with conventional virtual topology controls. We also demonstrate that our virtual topology control achieves one-tenth of control duration.

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