Abstract: Qos has became one of the most important factors that governs the quality of network traffic. In this study, routers are deployed with data controllers to tackle the traffic congestion. The core router queue will be tested and monitored to decide if any action need to be taken to regulate the source data sending rate. This study does not depend on measuring the main parameters such as bandwidth, delay and packet loss, but it is focused on the max-min fairness and low queuing delay and the comparison between them.