Artificial Intelligence
On Parallel Algorithms for Single-Fault Diagnosis in Fault Propagation Graph Systems
IEEE Transactions on Parallel and Distributed Systems
Fault diagnosis in optical networks
Journal of High Speed Networks - Special issue on survivable optical networks - part II
Computational Complexity Issues in Operative Diagnostics of Graph-Based Systems
IEEE Transactions on Computers
An alarm filtering algorithm for optical communication networks
Proceedings of the IEEE/IFIP TC6/WG6.4/WG6.6 International Conference on Management of Multimedia Networks and Services
On Monitoring Transparent Optical Networks
ICPPW '02 Proceedings of the 2002 International Conference on Parallel Processing Workshops
Fault detection and localization scheme for multiple failures in optical network
ICDCN'08 Proceedings of the 9th international conference on Distributed computing and networking
Failure Location Algorithm for Transparent Optical Networks
IEEE Journal on Selected Areas in Communications
Automatic failure isolation and reconfiguration [ring networks]
IEEE Network: The Magazine of Global Internetworking
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The scheme for efficient, accurate and scalable monitoring and localizing faults is necessary for transparent optical networks. Optical transparency makes the monitoring and localization process difficult in the optical layer as failures in physical layer propagate and subsequently generate multiple alarms throughout the network. Moreover, failures in physical layer could be detected and located in optical layer before they are propagated to the upper layer. So, a fast and scalable monitoring and fault localization scheme are required to offer a secure and resilient network. In this paper we propose a fault management scheme that handles multiple failures in the optical network using wavelength-division multiplexing (WDM) technology. It consists of a two-phase scheme, namely (a) fault detection which detects faults by raising alarms of the monitoring devices and (b) fault localization that subsequently localizes these faults by invoking an algorithm. The latter phase obtains a set of potential faulty nodes (links). Next, we locate the exact position of faulty node (link) by transmitting the signal through it. We demonstrate the performance of this proposed scheme on a 28-node EuroNet.