1

INSTALLATION OF NETWORK SIMULATOR 2

T S Pradeep Kumar VIT Chennai http://www.nsnam.com http://www.pradeepkumar.org Email: pradeepkumarts@gmail.com

2

Installation

• The version taken here is ns-allinone-2.35. • There are two types

• Build all at once (ns-allinone-2.35.tar.gz) • Good for beginners as well advanced users

• Build from pieces (download individually and build it) • For advanced users.

3

Requirements for NS2

• A Basic C compiler (GCC) • This comes almost in all distros of Linux

• TCL/Tk • This should be installed separately, default installation

does not carry these packages • PERL Script

• This also comes default • X11 Libraries

• This is helpful for running Network Animator (GUI) • This also comes in the default installation

Step1: Untar or unzip the contents

4

Step 2: Go to the folder and execute

./install command

5

Step 3: Once

installation completed, set

the path…

6

Insight…

7

8

Step 1

• tar zxvf ns-allinone-2.35.tar.gz orgzip -d ns-allinone-2.35.tar.gz tar xvf ns-allinone-2.35.tar

• z – to decompress from gz • x – extract • v – verbose mode • f – force (don’t ask whether to extract a file)

9

Step 2

• Always use /home/<user>/ to install ns2

• Example I used /home/pradeep/ • Once untar is done, go to the concerned folder

using the command cd ns-allinone-2.35 • Execute the command ./install

• If the installation fails in the middle, then try to install the Linux packages that are necessary to run NS2.

10

Step 3• If the installation is success,

• NS2 will give the path information for you

• These path details to be updated and then we can run ns, nam and xgraph

• Path settings will be done in this file • /home/user/.bash_profile (for Fedora)

• /home/user/.bashrc (for ubuntu)

• /home/user/.profile (for Linux Mint)

11

Step 3• Path should be set for two variables

• PATH • LD_LIBRARY_PATH

• Example • PATH=$PATH:$HOME:/home/pradeep/ns-

allinone-2.35/bin:/home/pradeep/ns-allinone-2.35/tcl8.4.14/unix:/home/pradeep/ns-allinone-2.35/tk8.4.14/unix

• export LD_LIBRARY_PATH=/home/pradeep/ns-allinone-2.35/otcl-1.13:/home/pradeep/ns-allinone-2.31/lib

12

Step 4

• Logout and login • Go to terminal and type the command

• ns (a % symbol indicates the successful installation of ns2)

• nam (a network animator window will be opened)

13

What if installation is unsuccessful?

• Since there are different Linux distributions, not all the Linux will do the same as above.

• Based on the • GCC version incompatibility • Unavailability of packages for a particular distribution • Backward incompatibility • Updation or major changes in the software packages May lead to unsuccessful installation

14

What if installation is unsuccessful?

• My website addresses for more than 25 distributions like

• Ubuntu 8.04 to 16.04 (Latest)

• Fedora 9 to Fedora 23 (Latest)

• Linux Mint 13 to Linux Mint 18 (Latest)

• Redhat Linux Enterprise Linux or CentOS

So, Please refer http://www.nsnam.com for further information

15

Examples in NS2

• To see examples, please go to this folder

• /home/user/ns-allinone-2.35/ns-2.35/tcl/ex

• There are huge number of examples for NS2

• To run a tcl file, following is the command

ns filename.tcl

• To run a nam file

nam filename.nam

16

Tracing

• To see the tracing file • Either xgraph can be used (which comes along with ns2)

• Third party software like “tracegraph” can be used (but the support is stopped, still it is good to predict the results) • For installing tracegraph, refer my website for a video

tutorial

• gnuplot can be used

• Questions???????