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The human eye sees basically three colors: red, green and blue. The white is a combination of the three, the black is their lack.

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Ethernet Connectivity is enabled by using Cables.


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Showing posts with label Linux Tutorial. Show all posts
Showing posts with label Linux Tutorial. Show all posts

Ubuntu Installation using Windows Installer

There is an absolute easy way to install  ubuntu. Let us see step by step procedure to install ubuntu by using ubuntu windows installer.
First download the windows installer by writing following in google and open the first link.
Now, click on the Get the installer button.

Xgraph in NS2


One part of the ns-allinone package is 'xgraph', a plotting program which can be used to create graphic representations of simulation results. In this section, I will show you a simple way how you can create output files in your Tcl scripts which can be used as data sets for xgraph. On the way there, I will also show you how to use traffic generators.
A note: The technique I present here is one of many possible ways to create output files suitable for xgraph. If you think there is a technique which is superior in terms of understandablity (which is what I aim for in this tutorial), please let me know.

First of all, we create the following topology:
Nam snap shot
The following piece of code should look familiar to you by now if you read the first sections of this tutorial.

set n0 [$ns node]
set n1 [$ns node]
set n2 [$ns node]
set n3 [$ns node]
set n4 [$ns node]

$ns duplex-link $n0 $n3 1Mb 100ms DropTail
$ns duplex-link $n1 $n3 1Mb 100ms DropTail
$ns duplex-link $n2 $n3 1Mb 100ms DropTail
$ns duplex-link $n3 $n4 1Mb 100ms DropTail

NS2 installation using Ubuntu Software Center

There is an absolute easy way to install ns2 (network simulator) by using the easiest technique available on ubuntu. 
Let us install ns2 in a very nice and easy way. Ubuntu Software Center provides with ease to install different softwares by wizard.

Here is how it is done.

Open “Ubuntu Software Center” as hightlighted in the below figure.

Now, in the search box on the top right corner. Write ns2 and press enter.

You will see the package. Hit install button and it will install ns2. Ofcourse, internet connectivity is must :)
Similarly, you can install nam(network animator) by following the same procedure. Just enter "nam" in the search box and hit enter.

Install the first package that you see. And there you go, you have installed ns2 and nam .  You can always install it using terminal simply by writing the following command.

sudo apt-get install ns2 nam xgraph

Remember, when you do the same in Ubuntu 13.04, it will not show you the desired ns2 package. And you will have to install it manually. I guess this is only available for 12.04 version. So, there is another way available if you want to install ns2 in that version.

This could be resolved by applying the following command.

sudo apt-get update

When the update is completed, go and run the command to install ns2 , nam and xgraph. If you want an easy way out to install Ubuntu using windows. Please click here.