OPNET Modeler is one of famous simulation tools provided by OPNET Technologies.
OPNET is a commercial software unlike Network Simulator 2 (NS-2) & Network Simulator 3 (NS-3)
As far as I know, NS2 is based on descrete event-driven model , while OPNET engine is based on Finite State Machine combined with analytical model.
I have no particular experience about OPNET, but I'm searching for papers comparing NS-2 with OPNET. Sure both has their own disadvantages and advantages. And what about NS-3?
Hrm by the way, I need to find info about
1) Descrete event-driven model
2) Analytical Model
3) Finite State Machine Model
what does it really means?
Network simulation and network simulator area are very wide area. It is normal since network system (eg. Internet) is the biggest system ever created by human.
back to OPNET, , OPNET have more features than NS-2 but NS-2 is moreattractive due to its open source nature.
Showing posts with label NS2 have a very large user base. Show all posts
Showing posts with label NS2 have a very large user base. Show all posts
Friday, May 29, 2009
Tuesday, May 26, 2009
NSBM - Network Simulation By Mouse
NSBM is another effort to ease NS2 usage.
" NSBM ("Network Simulation By Mouse") is a GUI that allows you to graphically develop simulation scenarios and then generate a tcl script. It requires java (1.4 recommended, it doesn't properly work with 1.5; here's a BETA version that should work with Java 1.5). The source code is also available - feel free to change it!"
I read the paper regarding NSBM. It is a very good effort actually to have this kind of GUI to help user develops network simulations. The GUI get good feedback from the target audience (Student). If you are new to NS2 I suggest that you use NSBM.
" NSBM ("Network Simulation By Mouse") is a GUI that allows you to graphically develop simulation scenarios and then generate a tcl script. It requires java (1.4 recommended, it doesn't properly work with 1.5; here's a BETA version that should work with Java 1.5). The source code is also available - feel free to change it!"
I read the paper regarding NSBM. It is a very good effort actually to have this kind of GUI to help user develops network simulations. The GUI get good feedback from the target audience (Student). If you are new to NS2 I suggest that you use NSBM.
Wednesday, May 13, 2009
NS2 has a very large user base
Although network simulator NS2 is quite hard to use, the fact that NS2 is free to use, an open source and can be extended and added with new protocol makes a lot of people using it.
Having a large supporters is considered as a big advantage. The supporters of course will create new support tool to help using NS2.
The support tool can be in form of written materials , forums, blogs, tutorials and software.
A lot researcher develop their own tools and program to help using NS2.
Having a large supporters is considered as a big advantage. The supporters of course will create new support tool to help using NS2.
The support tool can be in form of written materials , forums, blogs, tutorials and software.
A lot researcher develop their own tools and program to help using NS2.
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