For
the latest information about the ns Network Simulator, go to the ns manual ay http://www.isi.edu/nsnam/ns/
or http://www.isi.edu/nsnam/ns/ns-documentation.html .
For
examples, go to the downloaded ns package folder at ns-2/tcl/ex. In addition,
other tutorials include the Marc Greis’s tutorial and the tutorial by Jae Chung
- Mark Claypool.
Ns
simulator is based on two languages: C++ as the back-end and the oTcl
(object-oriented version of tool command language, tcl) as the front-end. NS is
a discrete event simulator, where the advance of time depends on the timing of
events, which are maintained by a scheduler.
Some Esssential Commands List:
ns – command to verify the
installation of tcl shell script and ns network simulator
ns-version – command to return the ns
version
ns-random – command to return a random
number, uniformly distributed between [0-(231-1)].
ns-random var – var is used to set the seed to random number
generator.
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