A new heuristic routing algorithm with Hamiltonian Cycle Protection in survivable networks
Computer Communications
A novel class-based protection algorithm providing fast service recovery in IP/WDM networks
NETWORKING'08 Proceedings of the 7th international IFIP-TC6 networking conference on AdHoc and sensor networks, wireless networks, next generation internet
A fast reroute scheme for IP multicast
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
IEEE Transactions on Communications
IEEE Journal on Selected Areas in Communications
P-Cycle and P-Path dynamic hybrid protection strategies based on block probability for WDM networks
Mathematical and Computer Modelling: An International Journal
| Hi-index | 0.07 |
We study an idea for efficient integrated protection of an IP over WDM network using the spare capacity of span-protecting p-cycles to provide protection against both optical link failures and router node failures in the IP/MPLS layer. Previously, networks using span-protecting p-cycles were designed from the point of view of a single-layer physical transport network. Also separately, it has been known how to plan capacity allocations to IP-layer logical links to support controlled levels of bandwidth oversubscription on transiting traffic flows through a failed router or ATM node. To address both failure types, however, it is unattractive to simply combine the two investments in added protection capacity. Accordingly, we have studied ways to plan a 100% span-restorable set of physical-layer p-cycles so that very high levels of transiting traffic flow can also be restored upon MPLS router node failure, with controlled worst-case oversubscription of LSP capacity allocations. In test cases it was found that the spare capacity provided by span-protecting p-cycles can provide a high level of node protection depending on the strategy used for exploring the p-cycle capacity. We think this leads to novel and efficient strategies for multi-service and multi-layer survivable traffic engineering and bandwidth management