University Of Caoe Town


OPNET Technologies
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Teaching:


University: University of Cape Town
Convenor: Neco Ventura 
Assistant: Vitalis Gavole O. 
Department: Department of Electrical Engineering

 

Using OPNET software for teaching purposes during the period of 07.2008-11.2008 includes organization of the network modeling course as a part of the undergraduate course EEE4003S “Broadband networks” and postgraduate course EEE5029Z “Broadband communication networks”. For this modeling course a sequence of the laboratory manuals was developed. Given manuals refer to the well-known networking problems, which are considered as simulation scenarios in the environment of OPNET software. Brief summary of the laboratory works is provided below.

  1. Lab. Ethernet LANs with a star topology.

This lab is designated to demonstrate operation of the Ethernet network and examine its performance under different scenarios. The lab tasks include setting up Ethernet network consisting of a number of stations connected in a star topology with a hub/switch as a central node, study how the network load as well as the size of the packets and the service rate affects the throughput of the network, and comparing performance of the shared and switched transmission media.

  1. Lab. ATM services.

The objective of the lab is to examine the effect of ATM adaptation layers and service classes on the performance of the network. In this lab students have to set up an ATM network that carries three applications: Voice, Email, and FTP. After that they study how the choice of the adaptation layer, as well as the service classes can affect the performance of the applications.

  1. Lab. Transmission Control Protocol.

Two important problems are considered in the given manual: examination of the throughput of a TCP connection as the flow control window size is varied and performance estimation of the error control algorithms implemented by TCP. The task is to set up a network that utilizes TCP as its end-to-end transmission protocol, including the FTP server, the client workstation and IP cloud, through which TCP/IP connections are established. In the course of simulations TCP statistics are monitored for the “server-workstation” FTP transfer under different configurations of TCP parameters.


Course code: EEE4002F

Schedule (First Semester)
Monday: 2:00pm - 4:00pm
Tuesday: 1:00pm - 3:00pm / 4:00pm - 6:00pm


Convenor: Anthony Chan 

  1. Lab. Basics of the OPNET Modeler.
This tutorial teaches you the basics of using Modeler. You will learn how to use the interface and some basic modeling theory. You will also learn how to use the Modeler features to build and analyze network models.

  1. Lab. Small Internetworks.
In this lab, you learn some Modeler features by using the Project Editor to build a topology of small internetworks. You will build the network quickly, choose statistics to collect, run a simulation and analyze the results. You will see how the Project Editor will be used with the Node and Process editors.
  1. Lab. M/M/1 Queue.
In this tutorial, you will explore the Node Editor, the Probe Editor, the Analysis Tool and filters. You will explore the Node Editor by creating an M/M/1 queue. You will use the Probe Editor to gather different types of statistics and apply filters to data gathered during simulation. You will use the analysis tool in addition to the Project Editor to ran the simulation and analyze the results. After viewing your results, you will compare the simulation results with expected values found using queuing theory.
  1. Lab. Basic Processes.
A network is made up of individual nodes, and a node is made of modules. The process model defines the behavior of a module. By understanding process models, you can build modules and combine them to build nodes to your exact specifications.

In this lab, you will create process and node models, define variables, macros (to be defined later), and transitions. Then you will run a simulation and analyze simulation results.

 

OPNET Technologies, Inc. is a leading provider of solutions for managing networks and applications. OPNET's best-in-class solutions address application troubleshooting, application monitoring, network monitoring, network configuration management , network planning, and network simulation. OPNET's solutions have been operationally proven in thousands of customer environments worldwide, including corporate and government enterprises, government and defense agencies, network service providers, and network equipment manufacturers. For more information about OPNET and its products, visit www.opnet.com.

 

2012 - Dep. of Electrical Engineering - University of Cape Town