Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/47604
 Title: Resilient arcs and node disjointness in diverse routing Authors: Gomes, Teresa Żotkiewicz, Mateusz Keywords: routing; protection; disjoint paths Issue Date: 2014 Publisher: Elsevier Citation: Teresa Gomes, Mateusz Żotkiewicz, Resilient arcs and node disjointness in diverse routing, Optical Switching and Networking, Volume 14, Part 2, 2014, Pages 149-163, ISSN 1573-4277, https://doi.org/10.1016/j.osn.2014.05.022. (http://www.sciencedirect.com/science/article/pii/S1573427714000666) Project: PEst-OE/ EEI/UI308/2014  ICIS Project CENTRO-07-0224-FEDER-002003  National Science Center (Poland) under grant 2011/01/B/ST7/02967 Serial title, monograph or event: Optical Switching and Networking Volume: 14 Abstract: In multi-layer networks protection can be provided at multiple layers. Hence some links at an upper layer may be {\it resilient} because they are protected at a lower layer. We will designate as {\it resilient arc} at a given layer, an arc which has some form of protection at an underlaying layer. When path diversity is used at an upper layer, and resilient arcs are taken into account, it may not be necessary for the considered paths to be fully disjoint. We solve a problem of finding the shortest node-disjoint pair of paths that can share resilient arcs. It is assumed that a network consists of a set of nodes and a set of arcs. Moreover, a number of available arcs are resilient. Our goal is to find the shortest pair of paths such that they share only those nodes that are incident to shared resilient arcs. Moreover, we assume that the resulting paths cannot contain loops, and costs of shared resilient arcs are counted only once towards the objective function. In the paper we present two novel algorithms solving the above problem, and two supporting algorithms that are utilized as subroutines. We implement the proposed algorithms and compare them to an MIP approach. URI: http://hdl.handle.net/10316/47604 DOI: 10.1016/j.osn.2014.05.022 Rights: openAccess Appears in Collections: FCTUC Eng.Electrotécnica - Artigos em Revistas InternacionaisI&D INESCC - Artigos em Revistas Internacionais

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