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2002
IEEE

On double-link failure recovery in WDM optical networks

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On double-link failure recovery in WDM optical networks
— Network survivability is a crucial requirement in high-speed optical networks. Typical approaches of providing survivability have considered the failure of a single component such as a link or a node. In this paper, we consider a failure model in which any two links in the network may fail in an arbitrary order. Three loopback methods of recovering from double-link failures are presented. The first two methods require the identification of the failed links, while the third one does not. However, precomputing the backup paths for the third method is more difficult than for the first two. A heuristic algorithm that pre-computes backup paths for links is presented. Numerical results comparing the performance of our algorithm with other approaches suggests that it is possible to achieve  ¢¡£¡¥¤ recovery from double-link failures with a modest increase in backup capacity.
Hongsik Choi, Suresh Subramaniam, Hyeong-Ah Choi
Added 15 Jul 2010
Updated 15 Jul 2010
Type Conference
Year 2002
Where INFOCOM
Authors Hongsik Choi, Suresh Subramaniam, Hyeong-Ah Choi
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