Performance-based evaluation of SDN controllers: OpenDayLight and RYU

Abstract The recent innovation of Software-Defined Networking dramatically changes traditional networking by separating the control and data layers, introducing a new level of programmability and interaction. This shift allows for centralized management, enhancing compatibility and streamlining the deployment of services. The present study compares the performance characteristics of two prominent SDN controllers, RYU and OpenDaylight. By employing a virtual multitier network environment created with Mininet in VirtualBox, the study evaluates key performance metrics like response time, throughput, and robustness to system faults. The research aims to demystify the operational differences of SDN controllers for end-users, specifically targeting educational and professional contexts. The insights gleaned from hands-on experiments provide a detailed comparison of RYU and ODL, aiming to guide users in the technology-rich SDN environment when choosing an operating system.