Mohanraj
INTRODUCTION TO NETWORK SIMULATOR NS-2
NS (from network simulator) is a name for series of discrete event network simulators, specifically ns-2 and ns-3. Both simulators are used in the simulation of routing protocols, among others, and are heavily used in ad-hoc networking research, and support popular network protocols, offering simulation results for wired and wireless networks alike.
Both ns-2 and ns-3 are popular in research given their open source model and detailed online documentation.
Download
a copy of ns-allinone-2.34.tar.gz.
Then from the command prompt
there, execute the following:
tar -xzf ns-allinone-2.34.tar.gz cd ns-allinone-2.34
./install
(If this fails, try
the Distribution
Specific instructions)
After a long wait and a whole lot of text, you should see
the installation finish up with text like the following:
Nam has been
installed successfully.
Ns-allinone package has been installed successfully. Here are the installation places:
tcl8.4.11: /home/pcraven/ns-allinone-2.29/{bin,include,lib} tk8.4.11: /home/pcraven/ns-allinone-2.29/{bin,include,lib} otcl: /home/pcraven/ns-allinone-2.29/otcl-1.11
tclcl: /home/pcraven/ns-allinone-2.29/tclcl-1.17
ns: /home/pcraven/ns-allinone-2.29/ns-2.29/ns nam: /home/pcraven/ns-allinone-2.29/nam-1.11/nam xgraph: /home/pcraven/ns-allinone-2.29/xgraph-12.1
gt-itm: /home/pcraven/ns-allinone-2.29/itm, edriver, sgb2alt,
sgb2ns, sgb2comns, sgb2hierns
---------------------------------------------------------------------------------- Please put
/home/myusername/ns-allinone-
2.29/bin:/home/myusername/ns-allinone-
2.29/tcl8.4.11/unix:/home/myusername/ns-allinone-2.29/tk8.4.11/unix into
your PATH environment; so
that
you'll be able to run itm/tclsh/wish/xgraph.
IMPORTANT NOTICES:
(1)
You MUST put /home/myusername/ns-allinone-2.29/otcl-1.11,
/home/myusername/ns-allinone-2.29/lib,
into
your LD_LIBRARY_PATH environment
variable.
If it complains about X libraries, add path
to your X libraries
into
LD_LIBRARY_PATH.
If
you are using csh, you can set it
like:
setenv LD_LIBRARY_PATH <paths> If
you are using sh, you can set it like:
export LD_LIBRARY_PATH=<paths>
(2) You MUST put
/home/myusername/ns-allinone-2.29/tcl8.4.11/library
into
your TCL_LIBRARY environmental
variable. Otherwise ns/nam will complain during startup.
(3) [OPTIONAL] To
save disk space, you
can now delete directories tcl8.4.11
and tk8.4.11. They are
now installed
under /home/myusername/ns-
allinone-2.29/{bin,include,lib}
After these steps,
you can now run the ns validation suite with cd ns-2.29;
./validate
For trouble shooting, please first read ns problems page http://www.isi.edu/nsnam/ns/ns-problems.html.
Also search the
ns mailing list archive
for related posts.
At this point, you should follow
the
advice
here
and
update
your environment variables. You should
also add ns-allinone-2.29/bin to you path. This has links to all the executables created by NS-2. Since
the Tcl scripts may call these executables (like nam or xgraph), it is a good idea to
have them in the path.
You can test the installation
by doing the following:
cd ns-2.29
./validate
Note that
this validation takes a really long time. If it starts out ok, you probably have a good installation.
At this point, you can see Getting Started with
NS-2
.
ns simulator installation steps | network simulator installation procedure | how to install network simulator na | install network simulator in linux, windows
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