COMPUTER NETWORKSMUHAMMAD JUNAID PASHA REG. NO: 09-MDTLC-0405Lab No. 02Network Traffic pattern and generation parametersObjective: To understand and observe the generation of data traffic innetworkTheory: The optimized network Engineering Tools has achieved widespread use in academia, industry and government. OPNET is widely used in universities as well as many parts of Department of Defense (DOD). OPNET Modeler to be used as a mean for simulation of the network scenarios, changes to the source code of the existing MANET routing protocol. The simulator thus enables development, analysis and comparison of the proposed approach.Four Levels of OPNET1.Network Simulink Environment2. Node Model3. Process Model4.Code view of state with a process modelProcedure:1.First create a project. (File>new>project>create empty scenario>office>select wlan>finish)2.Drag mobile workstation and rename them as “source” and “destination”3.Then right click on station, select “edit attributes” and change the setting4.In DES, click on “choose individual statistics” then global statistic>traffic source>bit/sec5.In Edit menu, click on preferences. Search “repositories”. Then click on “Network Simulation Repositories and then insert “stdmod”. Click APPLY and OK.6.To Simulate, go to DES, click “Discrete Event Simulation”. Give the duration e.g. 10 minutes and click “Run”7.To see result, go to DES>results> view results. Then global statistics>traffic statistic>bit sent. The sent will be shown in graph.