25 August 1999 New approach to fault-tolerant routing in all-optical networks
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Abstract
Fault management in WDM routed all-optical networks has mostly been addressed either by automatic protection switching or through loop-back recovery. These schemes are designed for managing single fault occurrence and generalization method to handle multiple faults are not known. Conventional routing schemes are static in nature (where the routers are programmed to realize the lightpaths between the end-nodes) and hence a fault management scheme needs to find a fault-free path between end-nodes using the settings of the routers. This paper considers the principle of survival route graphs to construct fault-free paths between end-nodes. As a result, the fault avoiding route between two end-nodes might be a multihop route in which the number of hops are limited to reduce the communication delay. The performance degradations of the network because of fault occurrence are studied through simulations and measured in terms of blocking probability and communication delay.
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Abhijit Sengupta, Abhijit Sengupta, Shailesh Alluri, Shailesh Alluri, Subir Bandyopadhyay, Subir Bandyopadhyay, Arunita Jaekel, Arunita Jaekel, } "New approach to fault-tolerant routing in all-optical networks", Proc. SPIE 3843, All-Optical Networking 1999: Architecture, Control, and Management Issues, (25 August 1999); doi: 10.1117/12.360410; https://doi.org/10.1117/12.360410
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