Enhanced crankback for lightpath setup in multi-domain optical networks
IEEE Communications Letters
Path selection techniques to establish constrained interdomain MPLS LSPs
NETWORKING'06 Proceedings of the 5th international IFIP-TC6 conference on Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile and Wireless Communications Systems
Interdomain path computation: Challenges and Solutions for Label Switched Networks
IEEE Communications Magazine
Control plane design in multidomain/multilayer optical networks
IEEE Communications Magazine
Enabling high availability over multiple optical networks
IEEE Communications Magazine
IEEE Network: The Magazine of Global Internetworking
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Multi-domain network survivability is a key problem area and crankback signaling offers a very viable alternative for post-fault restoration. However, although some initial multi-domain crankback studies have been done, most have not considered post-fault recovery. Along these lines, this paper proposes a novel solution framework for joint intra/inter-domain crankback restoration in realistic MPLS/GMPLS network settings. Namely, dynamic link failure and intra-domain link-state routing information is coupled with the available inter-domain path/distance vector routing state to improve the recovery process. Mechanisms are also introduced to limit crankback overheads and delays. The performance of the proposed solution is then analyzed using simulation.