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Title: The Spine concept for improving network availability
Authors: Alashaikh, Abdulaziz 
Gomes, Teresa 
Tipper, David 
Keywords: Quality of resilience classes; Network design
Issue Date: 2015
Publisher: Elsevier
Project: ICIS Project CENTRO-07-0224-FEDER-002003 
Serial title, monograph or event: Computer Networks
Volume: 82
Abstract: Telecommunications networks need to guarantee that all node pairs involved in critical service communications are highly available. Here we adopt a novel approach to the problem of how to provide high levels of availability in an efficient manner. The basic idea is to embed at the physical layer a high availability set of links and nodes (termed the spine) in the network topology to support protection and routing in providing end-to-end availability. We first explore the spine concept through simple topologies illustrating the potential benefits of the approach in improving the overall network availability and the capability to support quality of resilience classes. Then, we study how the structural properties of a network topology can be used to determine heuristics to select a suitable spine and compare this with the case where all network components have the same availability. This is followed by a numerical based study comparing the heuristics with all possible spanning tree based spines for sample topologies. Our results demonstrate how to best design a physical network to support protection methods in achieving high levels of availability efficiently.
Description: The Spine concept for improving network availability
ISSN: 1389-1286
DOI: 10.1016/j.comnet.2015.02.020
Rights: openAccess
Appears in Collections:I&D INESCC - Artigos em Revistas Internacionais

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