Network Simulation Using NS2

#Create a simulator object
set ns [new Simulator]

#Define different colors for data flows (for NAM)
$ns color 1 Blue
$ns color 2 Red

#Open the NAM trace file
set nf [open out.nam w]
$ns namtrace-all $nf

#Define a 'finish' procedure
proc finish {} {
        global ns nf

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Program for distance vector routing using java

import java.io.*;
class distance_vector
{
public static void main(String arg[])throws Exception
{
int n,src,i,j,k;
String ch;
int a[][]=new int[10][10];
System.out.println("Enter the no. of nodes..");
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
n=Integer.parseInt(br.readLine());
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)

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Program for exchange of information(Using TCP )

Click here to view the TCP sender
Click here to view the TCP Receiver

java program to implement bit stuffing

In data transmission and telecommunication, bit stuffing is the insertion of non information bits into data. Stuffed bits should not be confused with overhead bits.

Applications:Controller area network,Universal serial bus,HDLC

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Click here to view receiver program

java program to ping an ip address

import java.io.*; class ping { public static void main(String a[])throws Exception { String IP; String cmd; BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

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finding ip address of a computer using java program

import java.io.*; import java.net.InetAddress; public class ipadd{ public static void main(String[] args) { boolean flag=false; String str=""; try {

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Remote method invocation(RMI)

The Java Remote Method Invocation (Java RMI) is a Java API that performs the object-oriented equivalent of remote procedure calls (RPC), with support for direct transfer of serialized Java classes and distributed garbage collection.

Click here to view compiling procedure
Click here to view server interface
Click here to view server implementation
Click here to view server program
Click here to view client program

Program for exchange of information(communication through UDP)

import java.io.*; import java.net.*; import java.util.*; public class UdpReceiver { public static void main(String args[])throws IOException { try { DataInputStream dis=new DataInputStream(System.in); byte[] rdata=new byte[1024];

Click here for Udp Receiver
Click here for Udp Sender