SDONSim: An Advanced Simulation Tool for Software-Defined Elastic Optical Networks

The increasing demand for flexible and efficient optical networks has led to the development of Software-Defined Elastic Optical Networks (SD-EONs). These networks leverage the programmability of Software-Defined Networking (SDN) and the adaptability of Elastic Optical Networks (EONs) to optimize network performance under dynamic traffic conditions. However, existing simulation tools often fall short in terms of transparency, flexibility, and advanced functionality, limiting their utility in cutting-edge research. In this paper, we present SDONSim, a fully open-source simulator designed to address these limitations and provide a comprehensive platform for SDON research. SDONSim integrates traditional routing and spectrum assignment algorithms with advanced machine learning and reinforcement learning techniques, including support for the Stable Baselines 3 library. The simulator also offers robust unit testing, a fully functional graphical user interface (GUI), and extensive documentation to ensure usability and reliability. Performance evaluations demonstrate the effectiveness of SDONSim in modeling complex network scenarios, showcasing its potential as a powerful tool for advancing SDON research.