Software-defined network traffic routing optimization: A systematic literature review

The recent surge of interest in Software Defined Networking (SDN) technology is attributed to its centralized administration and control approach, which enhances network management and streamlines infrastructure maintenance. Despite its apparent sudden emergence, SDN is rooted in a lineage of endeavors aimed at enhancing network programmability. SDN offers real-time responsiveness and meets demanding high availability criteria. However, this novel paradigm encounters various technological challenges, some intrinsic and others inherited from pre-existing technologies. This study focuses on illuminating routing traffic concerns within the realm of SDN and provides insights into the forthcoming challenges that confront this transformative network model, encompassing both protocol and architecture perspectives. Additionally, we aim to explore diverse extant solutions and mitigation strategies that tackle issues of SDN scalability, elasticity, dependability, reliability, high availability, resiliency, and performance. This study entails a systematic analysis of 16 scholarly articles addressing routing traffic matters in the context of SDN. Through inductive analysis, this paper discerns and elucidates solutions for recurrently highlighted issues within academic discourse.