Date Added: May 2012
Fast and unambiguous failure localization for Shared Risk Link Groups (SRLGs) with multiple links is essential to build fully survival and functional transparent all-optical mesh networks. Monitoring trails (m-trails) has been proposed as an effective approach to achieve this goal. However, each m-trail traverses through each link by constantly taking a WaveLength channel (WL), which causes a significant amount of resource consumption. In this paper, a novel framework of all optical monitoring for SRLG failure localization is proposed. The authors investigate the feasibility of periodically launching optical bursts along each m-trail instead of supervisory light-path to probe the set of fiber segments along the m-trail, aiming to achieve a graceful compromise between resource consumption and failure localization latency.