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Dynamic path restoration based on multi-initiation for GMPLS-based WDM networks

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3 Author(s)
Jun Zheng ; University of Ottawa ; Baoxian Zhang ; Mouftah, H.T.

This paper proposes a multi-initiation mechanism for dynamic path restoration to handle single-link failures in GMPLS-based WDM networks. This mechanism allows multiple network nodes on the primary path of a disrupted connection to participate in the restoration of the disrupted connection. Each of the nodes respectively initiates a restoration process upon the detection or notification of a link failure. In each of the processes, the initiating node attempts to dynamically establish a backup path for the disrupted connection. The destination node acts as a coordinator among multiple restoration processes. The purpose is to reduce the path restoration time so that a backup path can be provisioned more quickly for each disrupted connection that traverses a failed link. Based on this mechanism, a path restoration protocol is then presented and the performance of the protocol is evaluated through simulation experiments in terms of path restoration time and path restoration probability.

Published in:

Communications, 2004 IEEE International Conference on  (Volume:3 )

Date of Conference:

20-24 June 2004