Performance Evaluation of Unicast Networks

This study is conducted to analyze the performance of unicast networks by evaluating different queuing protocols under different criteria using multimedia data. That was achieved by using the NS-2 tool. The data traffic used in the simulation was CBR over UDP traffic because it is representative of multimedia data in the NS-2. Protocols tested in the simulation were FIFO, FQ, RED, DRR and SFQ. These protocols, including its performance, were evaluated and compared to each other with respect to the packet loss ratio, dropping fairness, end-to-end delay and delay jitter. Also, this research provides background and some related literature for the performance of unicast networks including queuing algorithms, performance metrics, congestion avoidance and quality of service. Overall results of the study show that FQ, DRR and SFQ were providing better performance compared to other protocols. However, the best three protocols had different orders based on the performance metric conducted. The scope of the research focuses only on unicast wired networks, so this work is not applicable for multicast or wireless networks. The proposed model shows how results were collected and evaluated. Finally, the purpose of using multimedia data is to observe the behavior of each protocol under heavy traffic.