Introduction of Simulation & OPNET
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Transcript Introduction of Simulation & OPNET
INTRODUCTION OF
SIMULATION AND OPNET
I.Aseel AlTurki
King Saud University
OUTLINE
Ways to study a system
Advantages of simulation
OPNET modeler
Main features of OPNET simulator
OPNET workflow
OPNET’s hierarchal modeling
Editors
Project and scenarios
The project and scenario workflow
Organizing models- Object palette
Choose statistics
Simulation
What’s next
References
WAYS TO STUDY A SYSTEM
ADVANTAGES OF SIMULATION
Money, money, money
Designing, building, testing,
Redesigning, rebuilding, retesting,…
The level of detail that you can get from a
simulation
The only restrictions are your imagination, your
programming skills, and your CPU.
OPNET MODELER
OPNET stands for Optimum Network Performance.
OPNET is a computer software to simulate
communication networks.
OPNET Modeler, in particular, is a research oriented
package, and it is one of the leading simulators used in
the industry.
OPNET MODELER (CONT..)
OPNET
provides graphical editors to you to edit
your own devices, configure your own networks,
design your own protocols, define your own
packet formats, etc.
MAIN FEATURES OF OPNET SIMULATOR
The graphical modeling approach(Graphical user
interface).
The generation of statistical data is customizable.
A variety of comprehensive analysis tools.
OPNET WORKFLOW
Create
network
models
Choose
statistics
Run
simulation
View and
analyze
results
OPNET’S HIERARCHICAL MODELING
Three-Tiered Hierarchical Modeling
Network
Node
Process
EDITORS
Network Editor
Specify network topology and configure nodes and links.
Choose results, run simulations and view results
EDITORS (CONT..)
Node Editor
Create models of nodes by specifying internal structure
and capabilities
Create your own devices
EDITORS (CONT..)
Process Editor
Develop models of decision-making processes
representing protocols, algorithms, resource
management, operating systems, etc.
EDITORS (CONT..)
Link Model Editor
Path Editor
Packet Format Editor
PDF Editor
etc
PROJECT AND SCENARIOS
Project-and-Scenario approach to modeling
network
Project: Collection of related network scenarios.
Scenario: is a single instance of the network. It
represents a unique configuration of the
network.
THE PROJECT/SCENARIOS WORKFLOW
Create project
Create Baseline scenario
Import or create topology (using Object palette-next slide)
Import or create traffic (by creating applications and
profiles)
Choose results
Run simulation, view results
Duplicate scenario
Make changes
Re-run simulation
Compare results
((Iterate the last three steps until you have good results))
ORGANIZING MODELS- OBJECT PALETTES
An object palette is a graphical dialog box that
displays a group of nodes and link models.
Object palettes can be customized to contain only
the nodes and links that we need.
CHOOSE STATISTICS
Right click quick menu
Edit attributes Choose individual statistics
Check the statistics that you need.
SIMULATION
Select Duration, Seed, other Attributes
Run the Simulation
View Graphs produced
Analyze
WHAT'S NEXT
OPNET Online Tutorial
Do the step-by-step online tutorials
Do some small experimental modifications to the
tutorials so you can understand better.
Use the online help manual.
Search YouTube for easy tutorials such as:
http://www.youtube.com/user/rodybaylor#p/u/3/9
PIoVkG3L_A
Try to simulate a real world problem
REFERENCES
http://linux01.crystalgraphics.com/view/1b3c2dOGNmM/Introduction_to_OPNET_Simulator_fla
sh_ppt_presentation
http://www.powershow.com/view/26b936ZjRiN/Introduction_to_Opnet_Modeler_flash_ppt
_presentation
www.cs.lamar.edu/faculty/osborne/5328/OPNE
T%20Modeler.ppt
wow.eecs.berkeley.edu/ergen/docs/OPNET.ppt
www.docstoc.com/docs/77648870/Simulation
THANK YOU