Post-fault restoration in multi-domain networks with multiple failures

Multi-domain networking is an important focus area and crankback signaling strategies offer much potential for post-fault recovery. However, most studies in this space have not addressed multi-failure scenarios, e.g., correlated failures such as those resulting from weapons of mass destruction attacks. Hence this paper proposes a novel solution for intra/inter-domain post-fault crankback restoration in IP/MPLS networks (also extendible to optical DWDM networks). Specifically, inter-domain path/distance-vector routing state information is integrated with dynamic node/link failure and intra-domain link-state information to improve the recovery process. The performance of the proposed solution is then analyzed for a range of multi-failure scenarios.