Research on protection algorithm for double-link failures in meshed WDM networks

We studied the shared path protection(SPP) and the shared link protection(SLP) under the condition of the double-link failures in meshed WDM networks.Furthermore,we presented a new protection method-shared segment protection(SSP) model,and analyzed the static and dynamic protection algorithm respectively.The dynamic protection algorithm can dynamically adjust link costs according to the current network status,so it has a higher resource utilization and lower blocking probability.