![ns2 network simulator ns2 network simulator](https://www.tutorialsweb.com/ns2/NS2-1.1.jpg)
TCL_CONTINUE: After returning from C++, the interpreter continues to the next iteration. This is similar to executing C++ keyword break, but the results prevail to the OTcl domain TCL_BREAK: After returning from C++, the interpreter breaks the current loop. TCL_RETURN: after returning from c++, the interpreter exits the current instproc without performing the rest of instproc. The interpreter will explain thereasons for the error. TCL_ERROR: it implies does not complete successfully. TCL_OK: it denoted command completes successfully The tool used for much research-level network simulations is ns, for. What are the return commands are used in ns2: We close with a straightforward example of a wireless simulation. This is the sample code for creating random traffic in wireless network. Development of new protocols and algorithms is required to meet the growth in internet and face challenges or terms like network quality. Network simulator is a open source software. Step4 Setting Simulation time and schedules Network simulator contains a lot of open source simulator under different environment condition to certain operation. Step0 Declare Simulator and setting output file Steps involved in creating scenario file: Network topology, transmission time, using protocol etc are defined in scenario file.
![ns2 network simulator ns2 network simulator](https://ars.els-cdn.com/content/image/3-s2.0-B9780128008874000055-f05-05-9780128008874.jpg)
NS2 use Tcl language for creating simulation scenario file.NS2 is an object oriented simulator, written in C++, with an OTcl interpreter as a frontend.NS2 is a discrete event simulator targeted at networking research.
#NS2 NETWORK SIMULATOR SOFTWARE#
In this section we are going to discuss about the basics of ns2.Example program for network simulator 2.Ns2 is a open source software and can be freely downloaded and utilized for Research Purpose.