Performance Analysis of Queuing Disciplines for Difference Services Using OPNET Tool

Now a day Internet only provides Best Effort Service. Traffic is processed as earliest as possible, but there is no assurance of timelines or real delivery. With the fast transformation of the Internet into a commercial infrastructure, demands for service quality have quickly developed. People of the current world are very much dependent on various network services like VOIP, Videoconferencing and File Transfer. Different types of Traffic Management systems are used in those services. Queuing is one of the very important mechanisms in traffic management system. Each router in the network must implement some queuing discipline that governs how packets are buffered while waiting to be transmitted. This paper gives a comparative analysis of three queuing systems FIFO, PQ and WFQ. The study has been carried out on some issues like: Traffic dropped Traffic Received and packet end to end delay and the simulation results shows that WFQ technique has a better-quality than the other techniques.