An Algorithm for Fault Location in SDH/WDM Networks (original) (raw)
In this work, we show an algorithm to analyze the information of the alarms emitted by the components of an optical network, in the presence of a fault, aiming to find which network component is causing the failure. The algorithm proposed, named Correlated Fault location Algorithm, CFLA, uses the alarms’ correlation in order to reduce the list of suspected components shown to the network operators. The CFLA is sufficiently robust to work with false alarms, lost alarms and components that do not emit alarms when fail. The algorithm is described and simulated. The results of the simulations are compared to those obtained using another algorithm found in the literature.
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International Journal of Reconfigurable and Embedded Systems (IJRES), 2023
Optical network is an emerging technology for data communication inworldwide. The information is transmitted from the source to destination through the fiber optics. All optical network (AON) provides good transmission transparency, good expandability, large bandwidth, lower bit error rate (BER), and high processing speed. Link failure and node failure haveconsistently occurred in the traditional methods. In order to overcome the above mentioned issues, this paper proposes a robust software defined switching enabled fault localization framework (SDSFLF) to monitor the node and link failure in an AON. In this work, a novel faulty node localization (FNL) algorithm is exploited to locate the faulty node. Then, the software defined faulty link detection (SDFLD) algorithm that addresses the problem of link failure. The failures are localized in multi traffic stream (MTS) and multi agent system (MAS). Thus, the throughput is improved in SDSFLF compared than other existing methods like traditional routing and wavelength assignment (RWA), simulated annealing (SA) algorithm, attackaware RWA (A-RWA) convex, longest path first (LPF) ordering, and biggest source-destination node degree (BND) ordering. The performance of the proposed algorithm is evaluated in terms of network load, wavelength utilization, packet loss rate, and burst loss rate. Hence, proposed SDSFLF assures that high performance is achieved than other traditional techniques.
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