On the design of energy efficient optical networks with Software Defined Networking control across core and access networks

This paper presents a Software Defined Networking (SDN) control plane based on an overlay GMPLS control model. The SDN control platform manages optical core networks (WDM/DWDM networks) and the associated access networks (GPON networks), which makes it possible to gather global information and enable wider areas´ energy efficiency networking. The energy related information of the networks and the types of the traffic flows are collected and utilized for the end-to-end QoS provision. Dynamic network simulation results show that by applying different routing algorithms according to the type of traffic in the core networks, the energy efficiency of the network is improved without compromising the quality of service.