IEEE/ACM Transactions on Networking (TON)
Service cluster: a new framework for SLA-oriented provisioning in WDM mesh Networks
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Risk-aware routing for optical transport networks
INFOCOM'10 Proceedings of the 29th conference on Information communications
Algorithms and models for backup reprovisioning in WDM networks
IEEE/ACM Transactions on Networking (TON)
A study of the backup reprovisioning problem for FIPP p-cycles on WDM networks
Photonic Network Communications
Risk-aware provisioning for optical WDM mesh networks
IEEE/ACM Transactions on Networking (TON)
Disaster survivability in optical communication networks
Computer Communications
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For high-speed networks, a restoration mechanism based on backup path (BP) provides a means for assuring their survivability. We propose a two-phase BP reservation mechanism for high-speed networks. In the admission phase, a pair of working path (WP) and backup path is selected from the provisioned sets of WPs and BPs. In the adjustment phase, if backup capacity utilization exceeds the preset threshold, BP assignments are rearranged to optimize the usage of backup capacity. A mathematical model is formulated to verify the quality of the optimized solutions. Computational experiments indicate that the proposed mechanism significantly reduces the consumption of backup capacity while still maintaining a high degree of survivability. Moreover, experiments show that the optimized solutions obtained are on average within 3.6 percent of optimal.