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22 août 2011
- handle: 10670/1.bzk0mh
- hal: hal-01590391
- doi: 10.1007/978-3-642-23300-5_13
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info:eu-repo/semantics/altIdentifier/doi/10.1007/978-3-642-23300-5_13
http://creativecommons.org/licenses/by/ , info:eu-repo/semantics/OpenAccess
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DARPA Internet Internet (Computer network) Position analysis Analysis situs Rubber-sheet geometry Natural science Sciences Science of scienceCiter ce document
Wei Peng et al., « Evaluation of Topological Vulnerability of the Internet under Regional Failures », HAL-SHS : sciences de l'information, de la communication et des bibliothèques, ID : 10.1007/978-3-642-23300-5_13
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Résumé
Natural disasters often lead to regional failures which can fail down network nodes and links co-located in a large geographical area. It will be beneficial to improve the resilience of a network by assessing its vulnerability under regional failures. In this paper, we propose the concept of α-critical-distance to evaluate the importance of a network node in the geographical space with a given failure impact ratio α. Theoretical analysis and a polynomial time algorithm to find the minimal α-critical-distance of a network are presented. Using real Internet topology data, we conduct experiments to compute the minimal α-critical-distances for different networks. The computational results demonstrate the differences of vulnerability of different networks. We also find that with the same impact ratio α, the studied topologies have smaller α-critical-distances when the network performance is measured by network efficiency than giant component size.