Abstract

Energy consumption of the Internet is already substantial and it is likely to increase as operators deploy faster equipment to handle popular bandwidth-intensive services, such as streaming and video-on-demand. Existing work on energy saving considers local adaptation relying primarily on hardware-based techniques, such as sleeping and rate adaptation. We argue that a complete solution requires a network-wide approach that works in conjunction with local measures. However, traditional traffic engineering objectives do not include energy. This paper presents Energy-Aware Traffic engineering (EATe), a technique that takes energy consumption into account while optimizing for low link utilization and high end-host sending rates. EATe uses a scalable, online technique to spread the load among multiple paths so as to increase energy savings. Our extensive ns-2 simulations over realistic topologies show that EATe succeeds in moving 21% of the links to the sleep state, while keeping the same sending rates and being close to the optimal energy-aware solution. Further, we demonstrate that EATe successfully handles changes in traffic load and quickly restores a low overall energy state. Alternatively, EATe can move links to lower energy levels, resulting in energy savings of 8%. Finally, EATe can succeed in making 16% of active routers sleep.

QC 20140704

Original document

The different versions of the original document can be found in:

https://infoscience.epfl.ch/record/128561,
http://www.diva-portal.org/smash/record.jsf?pid=diva2:727667,
http://portal.acm.org/citation.cfm?id=1791341,
https://dblp.uni-trier.de/db/conf/eenergy/eenergy2010.html#VasicK10,
https://doi.acm.org/10.1145/1791314.1791341,
https://doi.org/10.1145/1791314.1791341,
https://academic.microsoft.com/#/detail/2043373292
https://infoscience.epfl.ch/record/128561/files/eate-tr-jun09.pdf,
https://infoscience.epfl.ch/record/128561/files/eate-tr-nov09.pdf,
https://infoscience.epfl.ch/record/128561/files/eate-tr-oct08.pdf,
http://infoscience.epfl.ch/record/128561
http://infoscience.epfl.ch/record/144017
http://dx.doi.org/10.1145/1791314.1791341

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Published on 01/01/2010

Volume 2010, 2010
DOI: 10.1145/1791314.1791341
Licence: CC BY-NC-SA license

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