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Title: Measuring the survivability of networks to geographic correlated failures
Authors: Long, Xuelian 
Tipper, David 
Gomes, Teresa 
Keywords: Network survivability; Geographic correlated vulnerabilities; Weighted spectrum
Issue Date: 2014
Citation: Xuelian Long, David Tipper, Teresa Gomes, Measuring the survivability of networks to geographic correlated failures, Optical Switching and Networking, Volume 14, Part 2, 2014, Pages 117-133, ISSN 1573-4277,
Project: PEst-OE/ EEI/UI308/2014 
Projeto ICIS CENTRO-07-0224-FEDER-002003 
MURI Grant W911NF-07-1-0318. 
Serial title, monograph or event: Optical Switching and Networking
Volume: 14
Abstract: Wide area backbone communication networks are subject to a variety of hazards that can result in network component failures. Hazards such as power failures and storms can lead to geographical correlated failures. Recently there has been increasing interest in determining the ability of etworks to survive geographic correlated failures and a number of measures to quantify the effects of failures have appeared in the literature. This paper proposes the use of weighted spectrum to evaluate network survivability regarding geographic correlated failures. Further we conduct a comparative analysis by finding the most vulnerable geographic cuts or nodes in the network though solving an optimization problem to determine the cut with the largest impact for a number of measures in the literature as well as weighted spectrum. Numerical results on several sample network topologies show that the worst-case geographic cuts depend on the measure used in an unweighted or a weighted graph. The proposed weighted spectrum measure is shown to be more versatile than other measures in both unweighted and weighted graphs.
DOI: 10.1016/j.osn.2014.05.004
Rights: openAccess
Appears in Collections:I&D INESCC - Artigos em Revistas Internacionais

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