Setting up Variables:
# Define options
set val(chan) Channel/WirelessChannel ;# channel type
set val(prop) Propagation/TwoRayGround ;# radio-propagation model
set val(ant) Antenna/OmniAntenna ;# Antenna type
set val(ll) LL ;# Link layer type
set val(ifq) Queue/DropTail/PriQueue ;# Interface queue type
set val(ifqlen) 50 ;# max packet in ifq
set val(netif) Phy/WirelessPhy ;# network interface type
set val(mac) Mac/802_11 ;# MAC type
set val(rp) DSDV ;# ad-hoc routing protocol
set val(nn) 2 ;# number of mobilenodes
#Instantiate simulator object
set ns_ [new Simulator]
#Setup Trace File
set tracefd [open simple.tr w]
$ns_ trace-all $tracefd
#Setup Nam file
set nf [open simple.nam w]
$ns namtrace-all-wireless $nf 700 200
#Create Topography
set topo [new Topography]
$topo load_flatgrid 500 500
#Create Object God
create-god $val(nn)
Configuring Mobilenode
# Configure nodes
$ns_ node-config -adhocRouting $val(rp) \
-llType $val(ll) \
-macType $val(mac) \
-ifqType $val(ifq) \
-ifqLen $val(ifqlen) \
-antType $val(ant) \
-propType $val(prop) \
-phyType $val(netif) \
-topoInstance $topo \
-channelType $val(chan) \
-agentTrace ON \
-routerTrace ON \
-macTrace OFF \
-movementTrace OFF
for {set i 0} {$i < $val(nn) } {incr i} {
set node_($i) [$ns_ node ]
$node_($i) random-motion 0 ;# disable random motion
}
#Configure Initial Position
$node_(0) set X_ 5.0
$node_(0) set Y_ 2.0
$node_(0) set Z_ 0.0
$node_(1) set X_ 390.0
$node_(1) set Y_ 385.0
$node_(1) set Z_ 0.0
#Create Movement
# Node_(1) starts to move towards node_(0)
$ns_ at 50.0 "$node_(1) setdest 25.0 20.0 15.0"
$ns_ at 10.0 "$node_(0) setdest 20.0 18.0 1.0"
# Node_(1) then starts to move away from node_(0)
$ns_ at 100.0 "$node_(1) setdest 490.0 480.0 15.0"
Setup traffic flow
set tcp [new Agent/TCP]
$tcp set class_ 2 set sink [new Agent/TCPSink]
$ns_ attach-agent $node_(0)
$tcp $ns_ attach-agent $node_(1)
$sink $ns_ connect $tcp
$sink set ftp [new Application/FTP]
$ftp attach-agent $tcp $ns_ at 10.0 "$ftp start"
Set Stop Time and Start Simulation
#Set Simulation Stop Time
for {set i 0} {$i < $val(nn) } {incr i} {
$ns_ at 150.0 "$node_($i) reset";
}
$ns_ at 150.0001 "stop"
$ns_ at 150.0002 "puts \"NS EXITING...\" ;
$ns_ halt" proc stop {} { global ns_ tracefd close $tracefd }
#Finally, Start The Simulation
puts "Starting Simulation..."
$ns_ run
