Shortest Path Forwarding in Software-Defined Networks Using RYU Controller

The shortest path forwarding is not provided by OpenFlow. The benefit of using OpenFlow is that programmers can control the network devices by writing different applications. This research paper deals with the design of the shortest path algorithm using the RYU controller and OpenFlow. The datacenter topology with different network sizes is used for evaluating various shortest-path algorithms. In this work, the RYU controller's basic switch application is used. The network application is divided into three parts, namely topology discovery, network view construction and forwarding. Mininet is used as an emulator with an RYU controller for SDN. The performance depicts that Dijkstra's algorithm gives better throughput as compared to other shortest-path algorithms under consideration during this study.