Fast optical layer mesh protection using pre-cross-connected trails
IEEE/ACM Transactions on Networking (TON)
Segment shared protection in mesh communications networks with bandwidth guaranteed tunnels
IEEE/ACM Transactions on Networking (TON)
Region protection/restoration scheme in survivable networks
MMM-ACNS'05 Proceedings of the Third international conference on Mathematical Methods, Models, and Architectures for Computer Network Security
Architectures for ATM network survivability
IEEE Communications Surveys & Tutorials
A restoration method independent of failure location in all-optical networks
Computer Communications
Advances in the management and control of optical Internet
IEEE Journal on Selected Areas in Communications
1+1 protection of overlay distributed computing systems: modeling and optimization
ICCSA'12 Proceedings of the 12th international conference on Computational Science and Its Applications - Volume Part IV
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At present one can observe the increasing dependency of society on large-scale complex networked systems. The consequences of faults of network elements are magnified by rapidly growing bandwidth of links and nodes. In this paper, a novel SCPO heuristic algorithm of establishing survivable connections in wide-area networks, that optimizes the level of resource (link capacity) utilization, is proposed. Unlike many popular optimization methods, it guarantees fast restoration of connections. The key idea is to keep backup paths the shortest by performing the optimization after establishing the connections. The proposed a posteriori optimization is based on the Largest-First graph coloring heuristics. The model is dedicated to static traffic pattern and preplanned survivability scheme. The algorithm was evaluated for the US Long-Distance Network and compared to the earlier resource utilization optimization approaches. The results show that with only a little capacity utilization degradation, fast restoration can be achieved. The observed reduction in restoration time values is significant (up to 41%). Presented solutions are dedicated to WDM-based optical communications network architectures.