Real-time monitoring and visualization software for OpenFlow network

Software Defined Network (SDN) is a new approach of networking that emphasis on the network programmability and more dynamic control of the network. OpenFlow is the broadly used standard to implement the SDN network. However, understanding the dynamic behavior of an OpenFlow network is still challenging since the information about the operation is distributed across numerous network switches. This paper presents a tool call Opimon (OpenFlow Interactive Monitoring) that monitor and visualizes the OpenFlow network based SDN. Opimon provides a real-time monitoring and visualization of an OpenFlow network including network topology and flow tables of each switch. Web based user interface enables a user to quickly follows the network behavior and identify the problem. Opimon has been deployed successfully on a PRAGMA-ENT international testbed and enables researchers to understand more about the behavior of the testbed.