Efficient bandwidth guaranteed restoration algorithms for multicast connections

Abstract

This paper defines a new restoration strategy for provisioning bandwidth guaranteed recovery for multicast connections in presence of link failures. The new restoration strategy is formulated into a new Integer Linear Programming (ILP) algorithm and is compared with other existing restoration strategies. We also present a new heuristic algorithm based on this new restoration strategy. Results show that our heuristic algorithm performs competitively close to the ILP-based algorithm, and is more bandwidth efficient than other existing heuristic algorithms that are based on different restoration strategies. © IFIP International Federation for Information Processing 2005.