Control Plane Comparison of OpenDayLight and Open Network Operating System Controllers

Software-Defined Networks (SDN) provide a new networking solution that decouples the control and data planes. The SDN controller as core component of the control plane manages and governs devices in the topology using the OpenFlow signalling protocol. The centralized construction of SDN leads to scalability issues. This paper analysis the number of switches impact on SDN controller performance. The performance metrics considered to measure the control plane quality of SDN controller are Topology Discovery Time (TDT) and Number of Overhead Messages (NOM). The paper focuses on two java based controllers which are OpenDaylight (ODL) and Open Network Operating System (ONOS). The simulation results show that increasing of openFlow switches number impacted on SDN performance of ODL and ONOS. However, the results show that ONOS outperform ODL in terms of performance metrics when the number of switches increases.