Provisioning of Protection for Dynamic Multicast Traffic Against Single Duct Failures in WDM Networks
WDM网络动态组播业务管道失效保护

Under the construction of optical networks, in order to reduce construction cost, several links may pass through a duct. In many cases, fibers fail due to duct failures. It is required to provide protection against duct failures. The paper investigates protection for dynamic multicast traffic against single duct failures. The paper explores two dedicated protection algorithms (SDP-DP, SDS-DP) and a shared protection algorithm(SDS-SDP). Block probabilities of the algorithms are assessed through simulation. Simulation results show that, in most cases, block probability of SDS-SDP is lowest since SDS-SDP shares protecting wavelengths among connection requests. When the network load is light, SDP-DP has lowest block probability.