Reliable and Energy-Efficient Routing for Green Software Defined Networking

Improvement of energy efficiency in Software Defined Networking (SDN) is a challenging problem. In order to achieve higher energy efficiency, the routing and scheduling in software defined networks should be planned robustly based on the topological specifications of the SDN. The topological specifications of the SDN depends on the size of the network graph which changes rapidly as the virtualized network devices in the network turned on and off by the controller. Therefore, modelling the SDN graph is an important issue in designing a reliability aware energy efficient SDN. In this paper we propose a new algorithm for reliable energy efficient traffic engineering in SDN. In the proposed algorithm the SDN structure is modelled according to complex network definitions. The experimental results show that the proposed algorithm can optimize the traffic flow in SDN and reduce the energy consumption by 73%, while maintain reliability in the network.