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Title |
Using Software Defined Networks for energy saving without compromising Quality of Service |
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Author |
Irena ?eremet, Sa?a Mrđovi? and Samir ?au?evi? |
| Citation |
Vol. 20 No. 3 pp. 183-194 |
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Abstract |
The main goal of our paper is to show how to save energy in the network by turning off underutilized ports/links/modules/devices without compromising QoS. The idea is to use only the best path for transmitting packets and turn off other network components in order to save energy. If congestion on the best path occurs, the second-best path is powered on and traffic is load-balanced between two paths. If congestion ever occurs on these two paths, the third-best path is powered on and so on. The number of used paths depends on link utilization on paths. For finding optimal and backup paths we use a modified Lagrange relaxation-based aggregated cost (LARAC) algorithm. Software Defined Network controller constantly measures link utilization in the whole network. By turning off/on network components on the paths, the controller avoids congestion and packet drops, but at the same time saves energy. |
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Keywords |
Software Defined Network, Energy Efficiency, Quality of Service |
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