A Bi-initiation-Based Path Restoration Mechanism for Wavelength-Routed WDM Networks

This paper proposes a bi-initiation-based path restoration mechanism for surviving single-link failures in wavelength-routed WDM networks. This mechanism allows the source node and the destination node of a broken con-nection to respectively initiate a path restoration process in the event of a link failure and uses the destination node to coordinate between the two processes. The purpose is to reduce the path restoration time so that a backup path can be provisioned faster for each broken connection that traverses the failed link. Based on this mechanism, a fast path restoration protocol is also presented and its performance is evaluated through simulation experiments.

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