dsdv.tcl

destination sequence distance vector

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

# 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)		3				;# number of mobilenodes
set val(rp)		DSDV				;# 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

# Generation of movements
$ns at 10.0 "$node_(0) setdest 250.0 250.0 3.0"
$ns at 15.0 "$node_(1) setdest 45.0 285.0 5.0"
$ns at 110.0 "$node_(0) setdest 480.0 300.0 5.0"

# 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 intitial 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
}

$ns run