{"title":"Optimising multiple aspects of network survivability","authors":"W. Pullan","doi":"10.1109/CEC.2002.1006219","DOIUrl":null,"url":null,"abstract":"It is generally accepted that survivable networks tend to consist of network elements (nodes and links) where no individual element is significantly more important than any other element. Using a traffic based network survivability metric Si, which quantifies the impact of removing network element i from a network of N elements, this paper investigates the modification of link capacities to simultaneously maximise average network survivability (1/N/spl Sigma//sub i=1//sup N/S/sub i/) and minimise the variability of Si (var(Si)). For some networks there appears to be an unique optimal set of link capacities however, for others, a number of possible optima exist. For these networks a Pareto-optimal set was generated so that a decision could be made on which link enhancements should be performed. The change in optima as a consequence of changes in the budget for link enhancements and also in changes in the required network traffic load were also investigated.","PeriodicalId":184547,"journal":{"name":"Proceedings of the 2002 Congress on Evolutionary Computation. CEC'02 (Cat. No.02TH8600)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2002-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"8","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the 2002 Congress on Evolutionary Computation. CEC'02 (Cat. No.02TH8600)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CEC.2002.1006219","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 8
Abstract
It is generally accepted that survivable networks tend to consist of network elements (nodes and links) where no individual element is significantly more important than any other element. Using a traffic based network survivability metric Si, which quantifies the impact of removing network element i from a network of N elements, this paper investigates the modification of link capacities to simultaneously maximise average network survivability (1/N/spl Sigma//sub i=1//sup N/S/sub i/) and minimise the variability of Si (var(Si)). For some networks there appears to be an unique optimal set of link capacities however, for others, a number of possible optima exist. For these networks a Pareto-optimal set was generated so that a decision could be made on which link enhancements should be performed. The change in optima as a consequence of changes in the budget for link enhancements and also in changes in the required network traffic load were also investigated.