Novel techniques for deploying monitoring trails (m-trails) for fault localization in all-optical networks

In this paper, desirable performance of fault localization process in all-optical networks is presented by employing the recently introduced Monitoring-Trail (m-trail) (that was proved to yield better performance by establishing monitoring resources in a shape of trails). As well, new techniques for deploying m-trails on networks along with its established lightpaths to perform fault localization are introduced. A novel technique based on Geographic Midpoint and the use of pair-wise shortest-paths that employ the standard Dijkstra algorithm, an adapted Chinese Postman´s Problem (CPP) solution and adapted Traveling Salesman´s Problem (TSP) solution algorithms. In addition, a manual exercise method can be directly applied to the ACT table. Different examples are given to illustrate these techniques with a brief description on its establishment algorithms. Using m-trails with established lightpaths to perform fault localization is a superb technique as it saves network resources; by reducing the number of the m-trails required for fault localization and hence the number of wavelengths used in the network.