A 3-node example for ad-hoc simulation with AODV For NS2

# aodv1.tcl

# A 3-node example for ad-hoc simulation with AODV

# Define options

set val(chan)           Channel/WirelessChannel    ;# channel type

set val(prop)           Propagation/TwoRayGround   ;# radio-propagation model

set val(netif)          Phy/WirelessPhy            ;# network interface type

set val(mac)            Mac/802_11                 ;# MAC type

set val(ifq)            Queue/DropTail/PriQueue    ;# interface queue type

set val(ll)             LL                         ;# link layer type

set val(ant)            Antenna/OmniAntenna        ;# antenna model

set val(ifqlen)         50                         ;# max packet in ifq

set val(nn)             5                          ;# number of mobilenodes

set val(rp)             AODV                       ;# routing protocol

set val(x)              500                        ;# X dimension of topography

set val(y)              400                        ;# Y dimension of topography 

set val(stop)           150                        ;# time of simulation end

set ns            [new Simulator]

set tracefd       [open simple.tr w]

set windowVsTime2 [open win.tr w] 

set namtrace      [open simwrls.nam w]   

$ns trace-all $tracefd

$ns namtrace-all-wireless $namtrace $val(x) $val(y)

# set up topography object

set topo       [new Topography]

$topo load_flatgrid $val(x) $val(y)

create-god $val(nn)

#

#  Create nn mobilenodes [$val(nn)] and attach them to the channel. 

#

# configure the 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) \

                         -channelType $val(chan) \

                         -topoInstance $topo \

                         -agentTrace ON \

                         -routerTrace ON \

                         -macTrace OFF \

                         -movementTrace ON

                        

        for {set i 0} {$i < $val(nn) } { incr i } {

                set node_($i) [$ns node]       

        }

# Provide initial location of mobilenodes

$node_(0) set X_ 5.0

$node_(0) set Y_ 5.0

$node_(0) set Z_ 0.0

$node_(1) set X_ 490.0

$node_(1) set Y_ 285.0

$node_(1) set Z_ 0.0

$node_(2) set X_ 150.0

$node_(2) set Y_ 240.0

$node_(2) set Z_ 0.0

$node_(3) set X_ 250.0

$node_(3) set Y_ 240.0

$node_(3) set Z_ 0.0

$node_(4) set X_ 100.0

$node_(4) set Y_ 70.0

$node_(4) set Z_ 0.0

# Generation of movements

$ns at 10.0 "$node_(0) setdest 250.0 250.0 10.0"

$ns at 15.0 "$node_(1) setdest 45.0 285.0 10.0"

$ns at 110.0 "$node_(0) setdest 480.0 300.0 10.0" 

$ns at 70.0 "$node_(3) setdest 180.0 30.0 10.0" 

# Set a TCP connection between node_(0) and node_(1)

set tcp [new Agent/TCP/Newreno]

$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" 

# Printing the window size

proc plotWindow {tcpSource file} {

global ns

set time 0.01

set now [$ns now]

set cwnd [$tcpSource set cwnd_]

puts $file "$now $cwnd"

$ns at [expr $now+$time] "plotWindow $tcpSource $file" }

$ns at 10.1 "plotWindow $tcp $windowVsTime2" 

# Define node initial position in nam

for {set i 0} {$i < $val(nn)} { incr i } {

# 30 defines the node size for nam

$ns initial_node_pos $node_($i) 30

}

# Telling nodes when the simulation ends

for {set i 0} {$i < $val(nn) } { incr i } {

    $ns at $val(stop) "$node_($i) reset";

}

# ending nam and the simulation 

$ns at $val(stop) "$ns nam-end-wireless $val(stop)"

$ns at $val(stop) "stop"

$ns at 150.01 "puts \"end simulation\" ; $ns halt"

proc stop {} {

    global ns tracefd namtrace

    $ns flush-trace

    close $tracefd

    close $namtrace

    #Execute nam on the trace file

    exec nam simwrls.nam &

    exit 0

}

#Call the finish procedure after 5 seconds of simulation time

$ns run

OUTPUT: