An Integrated Scheme for Multilayer Network Restoration

An integrated multilayer resilience scheme rep- resents an efficient solution for guaranteeing resilience of peer-to-peer network architectures featuring a unified con- trol plane, such as the emerging IP/GMPLS/WDM architec- ture. In this study a single integrated multilayer restora- tion scheme, namely the Stochastic Integrated Multilayer Restoration (SIMuR) scheme, is proposed. The SIMuR scheme stochastically chooses, based on the current network status information, along which path and at which layer, i.e., granu- larity, failed lightpaths are restored. Simulation results show that the SIMuR scheme quickly approaches, for increasing granularity, the average restoration probability lower bound while limiting the required grooming and signaling overheads. Keywords— Resilience, Multilayer restoration, GMPLS.

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