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On the effects of energy-aware traffic engineering on routing reliability

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Authors
Lin, Gongqi
Soh, Sieteng
Chin, K.
Lazarescu, Mihai
Date
2013
Type
Conference Paper

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Lin, Gongqi and Soh, Sieteng and Chin, Kwan-Wu and Lazarescu, Mihai. 2013. On the effects of energy-aware traffic engineering on routing reliability, in Proceedings of the 19th Asia Pacific Conference on Communications 2013 (APCC2013), Aug 29-31 2013, pp. 69-74. Bali, Indonesia: IEEE.
Source Title
The 19th Asia Pacific Conference on Communications (APCC2013)
Source Conference
Asia Pacific Conference on Communications
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Abstract

Current network infrastructures are over-provisioned to increase their resilience against resource failures, e.g., bundled links and nodes, as well as congestion during peak hours. However such strategies waste resources as well as exhibit poor energy efficiency at off-peak periods. To this end, several energy aware routing algorithms have been proposed to maximally switch off redundant network resource at low traffic load to minimize energy usage. These routing solutions, however, do not consider network reliability as critical back-off links/nodes maybe switched off. Henceforth, we aim to quantify the effects of five recently proposed green routing approaches, namely FGH, GreenTE, MSPF, SSPF, and TLDP, on the following two reliability measures: (i) 2-terminal reliability (ii) path reliability. Experiments using three topologies with real and synthetic traffic demands show that switching off redundant links significantly affects the 2-terminal reliability. Routing traffic through multiple paths has lesser reliability impact while reducing energy, especially when the paths are link disjoint. Interestingly, TDLP and MSPF have better path reliabilities than using shortest path routing.