Abstract

In this thesis, we consider multiple failures for MPLS multicast networks. Upon a failure in the primary path, its segmented backup gets activated to transfer the data, making a network real time. Here we propose a new method of providing backup paths in multicast routing tree. The method is based on segmentation cluster formation, in which backup paths are provided by connecting segmentation points (SPs) of the same cluster rather than providing a backup between the receiver label edged routers as suggested by other researchers. The segmented backup path and hence cluster formation aims at minimizing the number of receivers of the multicast routing tree to be dropped from the communication if a failure occurs. Our results show that failure recovery in multicast MPLS network using segmented backup approach is more effective than recent proposals. (Abstract shortened by UMI.)