An Efficient Fault-Tolerant Multicast Routing Protocol with Core-Based Tree Techniques

In this paper, we study an efficient fault-tolerant CBT multicast routing protocol. With our strategy, when a faulty component is detected, some pre-defined backup path(s) is (are) used to bypass the faulty component and enable the multicast communication to continue. Our protocol only requires that routers near the faulty component be reconfigured, thus reducing the runtime overhead without compromising much of the performance. Our performance evaluation shows that our new protocol performs nearly as well as the best possible global method while utilizing much less runtime overhead and implementation cost.