1. Opnet Simulator Project
Technion - Israel Institute of Technology
Computer Networks Laboratory
Opnet Simulator Project
Spring 2001
Project Presentation
Student: Avi Yadgar
Supervisor: Yoram Yihyie

2. Project Goals
Implementation of a simulation environment for a defined protocol, using as many of the simulator’s features as possible, according to the modeling paradigm.
Modification of the simulated protocol using the software’s low level features.

3. Project Goals, cont’ Comparative performance evaluation.
Composition of a simple tutorial in Hebrew for the simulator.
Composition of a step - by - step tutorial in Hebrew, on the basis of the implemented environment.

4. What is Opnet? A simulation and analysis software for: Applications
Protocols
Architecture
Devices
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5. Building the test case:
A network for Video - On - Demand use.
Server
Clients running the video Application
Switch

6. Activity on the net:
Client send requests to a Servers trough the Switches.
Servers reply by sending the data streams to the Clients trough the Switches.
Network is measured by:
Delay between request and response.
Ratio between Servers / Switches / Clients which still allows proper functionality of the application.

7. Enhanced Test Case: Data servers Control Servers
Clients running the Application

8. Enhanced Test Case: Clients send “Short” requests to Control Servers.
Control Servers compose and send “Long Request” to Data Servers.
Data Servers reply by sending the “Large Files”.
Control Servers broadcast the “Large Files” to all clients.

9. Implementation of Test Case:
Definition of “Short Request” and “Long Request” formats.
Implementation using OpNet’s packet format editor.

10. Implementation of Test Case:
Definition of “Small File” and “Large File” formats.

11. Implementation of Test Case:
Definition and Implementation of Data Servers
Structure and operational behavior.

12. Implementation of Test Case:
Definition and Implementation of Switch and Control Server.

13. Implementation of Test Case:
Definition and implementation of Clients.
Implementation of video application behavior.

14. Schedule Composition of a “Quick Start” tutorial
done
end of June
mid of July
end of July
Composition of a “Quick Start” tutorial
Implementation of models and basic environment
Implementation of models for enhanced test case
Simulations and result analysis
Composition of a tutorial for both test cases
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