Diverse routing in networks with probabilistic failures
Author(s)Modiano, Eytan H.; Lee, Hyang-Won
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We develop diverse routing schemes for dealing with multiple, possibly correlated, failures. While disjoint path protection can effectively deal with isolated single link failures, recovering from multiple failures is not guaranteed. In particular, events such as natural disasters or intentional attacks can lead to multiple correlated failures, for which recovery mechanisms are not well understood. We take a probabilistic view of network failures where multiple failure events can occur simultaneously, and develop algorithms for finding diverse routes with minimum joint failure probability. Moreover, we develop a novel Probabilistic Shared Risk Link Group (PSRLG) framework for modeling correlated failures. In this context, we formulate the problem of finding two paths with minimum joint failure probability as an Integer Non-Linear Program (INLP), and develop approximations and linear relaxations that can find nearly optimal solutions in most cases.
DepartmentMassachusetts Institute of Technology. Department of Aeronautics and Astronautics
IEEE INFOCOM 2009
Institute of Electrical and Electronics Engineers
Hyang-Won Lee, and E. Modiano. “Diverse Routing in Networks with Probabilistic Failures.” INFOCOM 2009, IEEE. 2009. 1035-1043. © 2010 Institute of Electrical and Electronics Engineers.
Final published version
INSPEC Accession Number: 10685511
disjoint path protection, diverse network routing, integer nonlinear program, intentional attacks, natural disasters, probabilistic failures, probabilistic shared risk link group