A Tractable Stochastic Model of Correlated Link Failures Caused by Disasters

Janos Tapolcai, Balazs Vass, Zalan Heszberger, Jozsef Biro, David Hay, Fernando A. Kuipers, Lajos Ronyai

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

28 Scopus citations

Abstract

In order to evaluate the expected availability of a service, a network administrator should consider all possible failure scenarios under the specific service availability model stipulated in the corresponding service-level agreement. Given the increase in natural disasters and malicious attacks with geographically extensive impact, considering only independent single link failures is often insufficient. In this paper, we build a stochastic model of geographically correlated link failures caused by disasters, in order to estimate the hazards a network may be prone to, and to understand the complex correlation between possible link failures. With such a model, one can quickly extract information, such as the probability of an arbitrary set of links to fail simultaneously, the probability of two nodes to be disconnected, the probability of a path to survive a failure, etc. Furthermore, we introduce a pre-computation process, which enables us to succinctly represent the joint probability distribution of link failures. In particular, we generate, in polynomial time, a quasilinear-sized data structure, with which the joint failure probability of any set of links can be computed efficiently.

Original languageAmerican English
Title of host publicationINFOCOM 2018 - IEEE Conference on Computer Communications
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2105-2113
Number of pages9
ISBN (Electronic)9781538641286
DOIs
StatePublished - 8 Oct 2018
Event2018 IEEE Conference on Computer Communications, INFOCOM 2018 - Honolulu, United States
Duration: 15 Apr 201819 Apr 2018

Publication series

NameProceedings - IEEE INFOCOM
Volume2018-April
ISSN (Print)0743-166X

Conference

Conference2018 IEEE Conference on Computer Communications, INFOCOM 2018
Country/TerritoryUnited States
CityHonolulu
Period15/04/1819/04/18

Bibliographical note

Publisher Copyright:
© 2018 IEEE.

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