Generalized shared protection (GSP): Simulation results and proof of optimality

Among various protection and restoration schemes it is hard to decide which is the best to be used in a certain situation. First, we propose a method to find the best possible shared protection scheme among all possible shared protection schemes. We provide optimisation and simulation results. Second, we prove the optimality of the proposed method in terms of minimal resource usage for any single demand to be routed with any shared protection: shared link, shared segment, and shared end-to-end path protection.