Graphical User Interface for RYU Software Defined Network Controller

Software-Defined Networking (SDN) is a new networking technology that is dynamic, easy to manage, cost-effective, adaptable, and well-suited to today’s growing network needs. Ryu Controller is SDN’s open source controller which NTT developed. Ryu Controller has rich functions and Application Programming Interfaces (APIs) to support very much the network engineer. However, it works with a command interface, so it is difficult for network managers who do not always master programming. To overcome that problem, we need to develop a web-based user interface system to help users to be more convenient in using the Ryu controller. The paper uses the Mininet emulator to create the SDN network environment and JavaScript, CSS, and HTML to process the derived APIs into the management page. The results achieved to create an interface that helps users easily observe the network’s protocol, the traffic of packets, the status of switches, and flow tables. It also helps network engineers and managers recognize that the transmission lines are failing (e.g., network congestion) or running out of bandwidth to promptly fix those transmissions in the fastest and most effective way.