Energy-aware traffic engineering

Energy consumption of the Internet is already substantial and it is likely to increase as operators deploy faster equipment to handle popular bandwidthintensive services, such as streaming and video-on-demand. Existing work on energy saving considers local adaptation relying primarily on hardwarebased 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 achieving the same traffic rates as the energy-oblivious approaches. 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 se...

• Type: Conference
• Year: 2010
• Where: EENERGY
• Authors: Nedeljko Vasic, Dejan Kostic
• Keywords: Computer Networks, EENERGY 2010, Energy Consumption, Energy Savings, Traffic Engineering