Paper Info
Title
Unambiguous switching link group failure localization in all-optical networks
Abstract
AbstractIn this article, we investigate the Advanced Global Neighborhood Failure Localization AG-NFL monitoring trail m-trail approach, which provides ultra-fast all-optical restoration for any shared protection scheme. In contrast with its previous counterparts, AG-NFL separates the management tasks of protection switching and link maintenance, and focuses on the identification of the proper switching actions in a timely manner rather than unambiguously localizing link failures. We form switching link groups at each node, that is, links whose failures do not have to be distinguished from each other, for example, because their corresponding switching actions can be performed at the same time. Forbidden link-pairs are introduced to identify the minimal set of conflicting switching actions, which minimizes the number of switching link groups. Furthermore, in order to minimize the number of m-trail reconfigurations upon dynamic traffic, we analyze the AG-NFL performance in four different m-trail design scenarios with decreasing dependency on the data plane. We prove that AG-NFL is NP-complete, and we propose an efficient heuristic to solve it. We demonstrate through simulations that unambiguous localization of switching link groups instead of single link failures leads to a significantly improved m-trail performance both in wavelength resources and the number of required transponders, while signaling-free restoration is still provided. © 2017 Wiley Periodicals, Inc. NETWORKS, Vol. 704, 327-341 2017
Year
DOI
Venue
2017
10.1002/net.21779
Periodicals
Keywords
Field
DocType
failure localization,monitoring trails,ultra-fast failure restoration,all-optical networks,shared protection,failure dependent protection
Topology,Forwarding plane,Mathematical optimization,Heuristic,All optical,Transponder,Link group,Real-time computing,Mathematics
Journal
Volume
Issue
ISSN
70
4
0028-3045
Citations 
PageRank 
References 
0
0.34
6
Authors
3
Name
Order
Citations
PageRank
Alija Pasic1174.18
Péter Babarczi29213.47
János Tapolcai336441.42