Solving Network Congestion Problem by Quality ofService Analysis using OPNET

Furat N. Tawfeeq*, Mohammed A. Abdala**
* Assistant Lecturer, National Cancer Research Center, Baghdad University, Iraq.
** Associate Professor, Department of Networks Engineering, College of Information Engineering, AL-Nahrain University, Iraq.
Periodicity:August - October'2016


Among many problems that reduced the performance of the network, especially Wide Area Network, congestion is one of these, which is caused when traffic request reaches or exceeds the available capacity of a route, resulting in blocking and less throughput per unit time. Congestion management attributes try to manage such cases. The work presented in this paper deals with an important issue that is the Quality of Service (QoS) techniques. QoS is the combination effect on service level, which locates the user's degree of contentment of the service. In this paper, packet schedulers (FIFO, WFQ,
CQ, and PQ) were implemented and evaluated under different applications with different priorities. The results show that WFQ scheduler gives acceptable results comparing with others. Computer simulation has been performed to study and verify the above mechanisms in the performance enhancement using the OPNET simulator.


Network Congestion, Quality of Service, Queuing Schemes.

How to Cite this Article?

Tawfeeq, F. N., and Abdala, M.A. (2016). Solving Network Congestion Problem by Quality of Service Analysis using OPNET. i-manager’s Journal on Communication Engineering and Systems, 5(4), 1-8.


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