In this demo, we provide a Mininet-based Software-Defined Network (SDN) simulation environment that improves the total flow throughput and scalability of the overall network. Mininet is a suitable and manageable tool to implement the proposed SDN based flow admission control module in order to configure the entire topology since it has already built in OpenFlow switches and virtual controllers. This open-source platform is also easily configurable via its drag and drop capabilities. In this Demo, for the Control Plane, OpenDaylight controller is used in order to simulate flow admission control module that fairly admits flows into the OpenFlow switches. OpenFlow version 1.3. for communication between separated Data and Control plane and Linux based operating system to build Mininet 2.1.0 are deployed in the simulator environment.