Distributed fault localization for multi-domain all-optical networks without power monitoring

Abstract

In this paper, we propose a distributed fault localization protocol for localizing single-link failures in all-optical multi-domain networks. The protocol is based on a limited-perimeter vector matching (LVM) mechanism, which restricts fault localization within a smaller perimeter area and can thus significantly reduce fault localization time. By performing a fault localization process sequentially in the optical domains that an affected lightpath passes through, the protocol can localize both inter-domain and intra-domain link failures that affect inter-domain traffic without exchanging any internal confidential domain-specific information between different domains. We show through analytical results that it can not only fast localize an inter-domain link failure between different domains but also localize an intra-domain link failure that affects inter-domain traffic faster than the Open-Shortest-Path-First (OSPF) protocol in a large network.