Abstract
Fault localization is a critical issue in all-optical networks. The limited-perimeter
vector matching (LVM) protocol is a novel fault-localization protocol proposed for localizing
single-link failures in all-optical networks. In this paper, we study the optimization
problems in applying the LVM protocol in static
all-optical networks. We consider two optimization
problems: one is to optimize the traffic distribution so that the fault-localization
probability in terms of the number of localized links is maximized, and the other is to
optimize the traffic distribution so that the time for localizing a failed link is minimized.
We formulate the two problems into an integer linear programming problem, respectively, and
use the CPLEX optimization tool to solve the formulated problems. We show that by optimizing
the traffic distribution the fault-localization probability can be maximized and the
fault-localization time can be minimized. Moreover, a heuristic algorithm is proposed to
evaluate the optimization results through simulation experiments.
© 2009 IEEE
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