6 weeks summer training in opnet,ludhiana
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Transcript of 6 weeks summer training in opnet,ludhiana
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Introduction of Simulation and OPNET
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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
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Ways to Study a system
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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.
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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.
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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.
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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.
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OPNET Workflow
Create network models
Choose statistics
Run simulation
View and analyze results
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OPNET’s Hierarchical Modeling Three-Tiered Hierarchical Modeling
◦ Network◦ Node◦ Process
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Editors Network Editor
Specify network topology and configure nodes and links. Choose results, run simulations and view results
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Editors (cont..) Node Editor
Create models of nodes by specifying internal structure and capabilities Create your own devices
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Editors (cont..) Process Editor
◦ Develop models of decision-making processes representing protocols, algorithms, resource management, operating systems, etc.
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Editors (cont..)
Link Model Editor
Path Editor
Packet Format Editor
PDF Editor
etc
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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.
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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))
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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.
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Choose Statistics
Right click quick menu◦ Edit attributes Choose individual statistics Check the statistics that you need.
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Simulation Select Duration, Seed, other Attributes
Run the Simulation
View Graphs produced
Analyze