Optimizing Energy Efficiency of QoS-Based Routing in Software-Defined Networks

We address the routing optimization problem in Software-Defined Networks (SDN) to minimize the energy consumption while satisfying multiple QoS constraints of network services. In this paper, we: 1) formally define the problem of routing optimization in SDN under multiple QoS constraints, and 2) propose a novel routing optimization algorithm that improves the classical Shuffled Frog Leaping Algorithm (SFLA). We develop a two-phase procedure for implementing our proposed routing optimization algorithm in an SDN environment. We report the results of experiments using the Mininet simulation framework that confirm the advantages of our proposed QoS routing optimization algorithm as compared to the state-of-the-art solutions.