Research on Link Optimization of Overlay Network

The selection strategy of overlay link directly affects the performance of overlay network routing, and another important factor that can affect the performance of overlay network is that the overlay link has an exorbitant level of reuse with the physical link, but they are not much considered in previous studies. Taking full account of various factors that can affect the performance of overlay network routing, multi-goal optimization model for overlay link selection problem can be put forward. This model considers the factor of the physical link reuse, and it strives to maintain a highest performance of the overlay routing at a lowest cost. The problem can be solved by Pareto dominance theory and the Immune clone algorithm, and it can be verified by digital simulation that the model is reasonable and the algorithm is efficiency.