1. Carrier sense
# ======================================================================
# 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) 4 ;# number of
mobilenodes
set val(rp) DSDV ;# routing protocol
set val(x) 1000.0 ;
set val(y) 1000.0 ;
set val(simtime) 10.0 ; #sim time
set val(drate) 2.0e6 ; #default datarate
set val(dist) 100.0 ;
# ======================================================================
# Main Program
# ======================================================================
if { $argc != 6} {
puts "Wrong no. of cmdline args."
puts "Usage: ns csense.tcl -RTSthresh <RTS_Threshold> -CSthresh
<carrier-sense threshold> -dist <x>"
exit 0
}
proc getopt {argc argv} {
global val
lappend optlist RTSthresh CSthresh dist
for {set i 0} {$i < $argc} {incr i} {
set arg [lindex $argv $i]
if {[string range $arg 0 0] != "-"} continue
set name [string range $arg 1 end]
set val($name) [lindex $argv [expr $i+1]]
}
}
getopt $argc $argv
#

2. # Initialize Global Variables
#
set ns_ [new Simulator]
set tracefd [open csense.tr w]
$ns_ trace-all $tracefd
#set namtrace [open single-hop.nam w] ;# for nam tracing
#$ns_ namtrace-all-wireless $namtrace $val(x) $val(y)
$ns_ use-newtrace
# set up topography object
set topo [new Topography]
$topo load_flatgrid $val(x) $val(y)
#
# Create God
#
set god_ [ create-god $val(nn) ]
$val(mac) set dataRate_ $val(drate)
if { $val(RTSthresh) >= 0 } { $val(mac) set RTSThreshold_ $val(RTSthresh)
}
if { $val(CSthresh) >= 0 } { $val(netif) set CSThresh_ $val(CSthresh) }
puts "Setting RTS_Threshold to $val(RTSthresh)"
puts "Setting CS_Threshold to $val(CSthresh)"
#
# Create the specified number of mobilenodes [$val(nn)] and "attach"
them
# to the channel.
# configure node
$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 ON
-movementTrace OFF

3. for {set i 0} {$i < $val(nn) } {incr i} {
set node_($i) [$ns_ node]
$node_($i) random-motion 0 ;# disable random motion
}
#
# Provide initial (X,Y, Z=0) co-ordinates for mobilenodes
#
#Conversation 1: Node 0 is the source, Node 1 is the dst
$node_(0) set X_ 50.0
$node_(0) set Y_ 0.0
$node_(0) set Z_ 0.0
$node_(1) set X_ 250.0
$node_(1) set Y_ 0.0
$node_(1) set Z_ 0.0
#Conversation 2: Node 2 is the source, Node 3 is the dst
$node_(2) set X_ 450.0
$node_(2) set Y_ $val(dist)
$node_(2) set Z_ 0.0
$node_(3) set X_ 250.0
$node_(3) set Y_ $val(dist)
$node_(3) set Z_ 0.0
# Define node initial position in nam
for {set i 0} {$i < $val(nn)} {incr i} {
# 20 defines the node size in nam, must adjust it according to your
scenario
# The function must be called after mobility model is defined
$ns_ initial_node_pos $node_($i) 20
}
#Attach a data-sink to destination
set null_(0) [new Agent/Null]
$ns_ attach-agent $node_(1) $null_(0)
set null_(1) [new Agent/Null]
$ns_ attach-agent $node_(3) $null_(1)

4. #traffic...make src talk to dst
set udp_(0) [new Agent/UDP]
$ns_ attach-agent $node_(0) $udp_(0)
set cbr_(0) [new Application/Traffic/CBR]
$cbr_(0) set packetSize_ 1024
$udp_(0) set packetSize_ 1024
$cbr_(0) set interval_ 0.001
$cbr_(0) set random_ 0.18372
$cbr_(0) set maxpkts_ 1000000
$cbr_(0) attach-agent $udp_(0)
$ns_ connect $udp_(0) $null_(0)
$ns_ at 0.0 "$cbr_(0) start"
set udp_(1) [new Agent/UDP]
$ns_ attach-agent $node_(2) $udp_(1)
set cbr_(1) [new Application/Traffic/CBR]
$cbr_(1) set packetSize_ 1024
$udp_(1) set packetSize_ 1024
$cbr_(1) set interval_ 0.001
$cbr_(1) set random_ 0.56272
$cbr_(1) set maxpkts_ 1000000
$cbr_(1) attach-agent $udp_(1)
$ns_ connect $udp_(1) $null_(1)
$ns_ at 1.0 "$cbr_(1) start"
#
# Tell nodes when the simulation ends
#
for {set i 0} {$i < $val(nn) } {incr i} {
$ns_ at $val(simtime) "$node_($i) reset";
}
$ns_ at $val(simtime) "stop"
$ns_ at $val(simtime).01 "puts "NS EXITING..." ; $ns_ halt"
proc stop {} {
global ns_ tracefd
$ns_ flush-trace
close $tracefd
}
puts "Starting Simulation..."
$ns_ run
Fairsim:
# ======================================================================
# Define options
# ======================================================================
set val(chan) Channel/WirelessChannel ;# channel type

5. 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) 4 ;# number of
mobilenodes
set val(rp) AODV ;# routing protocol
set val(sc) "./scenario" ;# scenario file
set val(x) 3000.0 ;
set val(y) 400.0 ;
set val(simtime) 10.0 ; #sim time
set val(drate) 2.0e6 ; #default datarate
set val(dist) 150.0 ; #default datarate
# ======================================================================
if { $argc < 2} {
puts "Wrong no. of cmdline args."
puts "Usage: ns sim.tcl -dist <dist>"
exit 0
}
proc getopt {argc argv} {
global val
lappend optlist dist
for {set i 0} {$i < $argc} {incr i} {
set arg [lindex $argv $i]
if {[string range $arg 0 0] != "-"} continue
set name [string range $arg 1 end]
set val($name) [lindex $argv [expr $i+1]]
}
}
# Main Program
# ======================================================================
getopt $argc $argv
#
# Initialize Global Variables
#
set ns_ [new Simulator]
set tracefd [open fairsim.tr w]
$ns_ trace-all $tracefd

6. set namtrace [open fairsim.nam w] ;# for nam tracing
$ns_ namtrace-all-wireless $namtrace $val(x) $val(y)
$ns_ use-newtrace
# set up topography object
set topo [new Topography]
$topo load_flatgrid $val(x) $val(y)
#
# Create God
#
set god_ [ create-god $val(nn) ]
$val(mac) set bandwidth_ 22.0e6
#$val(prop) set pathlossExp_ 3.0
#
# Create the specified number of mobilenodes [$val(nn)] and "attach"
them
# to the channel.
# configure node
$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 $topo
-agentTrace ON
-routerTrace ON
-macTrace ON
-movementTrace OFF
for {set i 0} {$i < $val(nn) } {incr i} {
set node_($i) [$ns_ node]
$node_($i) random-motion 0 ;# disable random motion
}
#
# Provide initial (X,Y, Z=0) co-ordinates for mobilenodes
#
#Node 0 is the source, Node 1 is the dst

7. $node_(1) set X_ 200.0
$node_(1) set Y_ 200.0
$node_(1) set Z_ 0.0
$node_(0) set X_ 250.0
$node_(0) set Y_ 200.0
$node_(0) set Z_ 0.0
set x [expr 250.0 + $val(dist)]
$node_(3) set X_ $x
$node_(3) set Y_ 200.0
$node_(3) set Z_ 0.0
$node_(2) set X_ [expr $x + 100.0]
$node_(2) set Y_ 200.0
$node_(2) set Z_ 0.0
# Define node initial position in nam
for {set i 0} {$i < $val(nn)} {incr i} {
# 20 defines the node size in nam, must adjust it according to your
scenario
# The function must be called after mobility model is defined
$ns_ initial_node_pos $node_($i) 20
}
#Attach a data-sink to destination
set null_(1) [new Agent/Null]
$ns_ attach-agent $node_(1) $null_(1)
set null_(3) [new Agent/Null]
$ns_ attach-agent $node_(3) $null_(3)
#traffic...make sources talk to dst
set udp_(0) [new Agent/UDP]
$ns_ attach-agent $node_(0) $udp_(0)
set cbr_(0) [new Application/Traffic/CBR]
$cbr_(0) set packetSize_ 512
$cbr_(0) set interval_ 0.0008
$cbr_(0) set random_ 0.96749
$cbr_(0) set maxpkts_ 1000000
$cbr_(0) attach-agent $udp_(0)
set udp_(2) [new Agent/UDP]
$ns_ attach-agent $node_(2) $udp_(2)
set cbr_(2) [new Application/Traffic/CBR]
$cbr_(2) set packetSize_ 512

8. $cbr_(2) set interval_ 0.0008
$cbr_(2) set random_ 0.96749
$cbr_(2) set maxpkts_ 1000000
$cbr_(2) attach-agent $udp_(2)
$ns_ connect $udp_(0) $null_(1)
$ns_ connect $udp_(2) $null_(3)
$ns_ at 0.0 "$cbr_(0) start"
$ns_ at 0.0 "$cbr_(2) start"
#
# Tell nodes when the simulation ends
#
for {set i 0} {$i < $val(nn) } {incr i} {
$ns_ at $val(simtime) "$node_($i) reset";
}
$ns_ at $val(simtime) "stop"
$ns_ at $val(simtime).01 "puts "NS EXITING..." ; $ns_ halt"
proc stop {} {
global ns_ tracefd
$ns_ flush-trace
close $tracefd
}
puts "Starting Simulation..."
$ns_ run
Aodv:
set val(chan) Channel/WirelessChannel ;
set val(prop) Propagation/TwoRayGround ;
set val(netif) Phy/WirelessPhy ;
set val(mac) Mac/802_11 ;
set val(ifq) Queue/DropTail/PriQueue ;
set val(ll) LL ;
set val(ant) Antenna/OmniAntenna ;
set val(ifqlen) 50 ;
set val(nn) 3 ;
set val(rp) AODV ;
set val(x) 500 ;
set val(y) 400 ;
set val(stop) 150 ;
set ns [new Simulator]
set tracefd [open simple.tr w]
set windowVsTime2 [open win.tr w]
set namtrace [open simwrls.nam w]

9. $ns trace-all $tracefd
$ns namtrace-all-wireless $namtrace $val(x) $val(y)
set topo [new Topography]
$topo load_flatgrid $val(x) $val(y)
create-god $val(nn)
$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]
}
$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
$ns at 10.0 "$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 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"

10. 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 $windowVsTime2"
for {set i 0} {$i<$val(nn) } {incr i} {
$ns initial_node_pos $node_($i) 30
}
for {set i 0} {$i<$val(nn) } {incr i} {
$ns at $val(stop) "$node_($i) reset";
}
$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
Sim:
# ======================================================================
# Define options
# ======================================================================
set val(chan) Channel/WirelessChannel ;# channel type
set val(prop) Propagation/Shadowing ;# 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) 2 ;# number of
mobilenodes
set val(rp) AODV ;# routing protocol
set val(sc) "./scenario" ;# scenario file
set val(x) 3000.0 ;
set val(y) 400.0 ;
set val(simtime) 10.0 ; #sim time
set val(drate) 2.0e6 ; #default datarate
set val(dist) 100 ;

11. # ======================================================================
# Main Program
# ======================================================================
if { $argc != 2} {
puts "Wrong no. of cmdline args."
puts "Usage: ns sim.tcl -dist <x>"
exit 0
}
proc getopt {argc argv} {
global val
lappend optlist dist
for {set i 0} {$i < $argc} {incr i} {
set arg [lindex $argv $i]
if {[string range $arg 0 0] != "-"} continue
set name [string range $arg 1 end]
set val($name) [lindex $argv [expr $i+1]]
}
}
getopt $argc $argv
#
# Initialize Global Variables
#
set ns_ [new Simulator]
set tracefd [open sim.tr w]
$ns_ trace-all $tracefd
$ns_ use-newtrace
# set up topography object
set topo [new Topography]
$topo load_flatgrid $val(x) $val(y)
#
# Create God
#
set god_ [ create-god $val(nn) ]
$val(netif) set Pt_ 0.100
$val(netif) set RXThresh_ 7.94328e-13
$val(netif) set CSThresh_ 6.30957e-14

12. $val(mac) set dataRate_ $val(drate)
#Shadowing Model Parameters
$val(prop) set std_db_ 4.0
$val(prop) set pathlossExp_ 3.5
#
# Create the specified number of mobilenodes [$val(nn)] and "attach"
them
# to the channel.
# configure node
$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 $topo
-agentTrace ON
-routerTrace ON
-macTrace ON
-movementTrace OFF
for {set i 0} {$i < $val(nn) } {incr i} {
set node_($i) [$ns_ node]
$node_($i) random-motion 0 ;# disable random motion
}
#
# Provide initial (X,Y, Z=0) co-ordinates for mobilenodes
#
#Node 0 is the source, Node 1 is the dst
$node_(0) set X_ 100.0
$node_(0) set Y_ 200.0
$node_(0) set Z_ 0.0
$node_(1) set X_ [expr 100.0 + $val(dist)]

13. $node_(1) set Y_ 200.0
$node_(1) set Z_ 0.0
# Define node initial position in nam
for {set i 0} {$i < $val(nn)} {incr i} {
# 20 defines the node size in nam, must adjust it according to your
scenario
# The function must be called after mobility model is defined
$ns_ initial_node_pos $node_($i) 20
}
#Attach a data-sink to destination
set null_(0) [new Agent/Null]
$ns_ attach-agent $node_(1) $null_(0)
#traffic...make src talk to dst
set udp_(0) [new Agent/UDP]
$ns_ attach-agent $node_(0) $udp_(0)
set cbr_(0) [new Application/Traffic/CBR]
$cbr_(0) set packetSize_ 512
$udp_(0) set packetSize_ 512
$cbr_(0) set interval_ 0.0008
$cbr_(0) set random_ 0.96749
$cbr_(0) set maxpkts_ 1000000
$cbr_(0) attach-agent $udp_(0)
$ns_ connect $udp_(0) $null_(0)
$ns_ at 0.0 "$cbr_(0) start"
#
# Tell nodes when the simulation ends
#
for {set i 0} {$i < $val(nn) } {incr i} {
$ns_ at $val(simtime) "$node_($i) reset";
}
$ns_ at $val(simtime) "stop"
$ns_ at $val(simtime).01 "puts "NS EXITING..." ; $ns_ halt"
proc stop {} {
global ns_ tracefd

14. $ns_ flush-trace
close $tracefd
}
puts "Starting Simulation..."
$ns_ run
Rcs_sim:
# ======================================================================
# 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) 100 ;# default number of
mobilenodes
set val(rp) AODV ;# routing protocol
set val(x) 1500.0 ;
set val(y) 1500.0 ;
set val(simtime) 10.0 ; #sim time
set val(rlen) 10 ;
# ======================================================================
# Main Program
# ======================================================================
if { $argc != 8 } {
puts "Wrong no. of cmdline args."
puts "Usage: ns multi-hop.tcl -rate <rate (Mbps)> -rxthresh
<rcv_threshold> -cpthresh <capture-threshold> -csthresh <carrier-sense
threshold (W)>"
exit 0
}
proc getopt {argc argv} {
global val
lappend optlist rate rxthresh cpthresh csthresh
for {set i 0} {$i < $argc} {incr i} {
set arg [lindex $argv $i]
if {[string range $arg 0 0] != "-"} continue
set name [string range $arg 1 end]

15. set val($name) [lindex $argv [expr $i+1]]
}
}
getopt $argc $argv
#
# Initialize Global Variables
#
set ns_ [new Simulator]
set tracefd [open rcssim.tr w]
$ns_ trace-all $tracefd
set namtrace [open rcssim.nam w] ;# for nam tracing
$ns_ namtrace-all-wireless $namtrace $val(x) $val(y)
$ns_ use-newtrace
# set up topography object
set topo [new Topography]
$topo load_flatgrid $val(x) $val(y)
#
# Create God
#
set god_ [ create-god $val(nn) ]
#set Propagation parameters
$val(prop) set pathlossExp_ 2.5
$val(prop) set std_db_ 2.0
#set PHY parameters
#2.4 GHz frequency
$val(netif) set freq_ 2.4e+09
#100 mW from Cisco 350
$val(netif) set Pt_ 0.100
$val(netif) set RXThresh_ $val(rxthresh)
$val(netif) set CPThresh_ $val(cpthresh)
$val(netif) set CSThresh_ $val(csthresh)
#$val(netif) set bandwidth_ $val(rate)
#set MAC parameters
#$val(mac) set bandwidth_ $val(rate)
$val(mac) set basicRate_ $val(rate)
$val(mac) set dataRate_ $val(rate)

16. #set RTSThreshold to some v. large value...effectively shutting down
RTS/CTS
$val(mac) set RTSThreshold_ 10192
#
# Create the specified number of mobilenodes [$val(nn)] and "attach"
them
# to the channel.
# configure node
$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 $topo
-agentTrace ON
-routerTrace ON
-macTrace ON
-movementTrace OFF
for {set i 0} {$i < $val(nn) } {incr i} {
set node_($i) [$ns_ node]
$node_($i) random-motion 0 ;# disable random motion
}
#
# Provide initial (X,Y, Z=0) co-ordinates for mobilenodes
#
set gridspace [expr $val(x) / $val(rlen)]
for {set i 0} {$i < $val(rlen) } {incr i} {
for {set j 0} {$j < $val(rlen) } {incr j} {
set a [expr $j + [expr $i * $val(rlen)]]
$node_($a) set X_ [expr 0.0 + [ expr $i * $gridspace]]
$node_($a) set Y_ [expr 0.0 + [ expr $j * $gridspace]]
$node_($a) set Z_ 0.0
}
}

17. # Define node initial position in nam
for {set i 0} {$i < $val(nn)} {incr i} {
# 20 defines the node size in nam, must adjust it according to your
scenario
# The function must be called after mobility model is defined
$ns_ initial_node_pos $node_($i) 20
set udp_($i) [new Agent/UDP]
$udp_($i) set packetSize_ 1024
$ns_ attach-agent $node_($i) $udp_($i)
set cbr_($i) [new Application/Traffic/CBR]
$cbr_($i) set packetSize_ 1024
$cbr_($i) set interval_ 0.001
$cbr_($i) set random_ 0.1346
$cbr_($i) set maxpkts_ 1000000
$cbr_($i) attach-agent $udp_($i)
set null_($i) [new Agent/Null]
$ns_ attach-agent $node_($i) $null_($i)
}
#
# Tell nodes when the simulation ends
#
expr srand(19987)
for {set i 0} {$i < 25 } {incr i} {
set tmp [expr [expr rand()] * $val(nn)]
set src [expr int($tmp)]
set tmp [expr [expr rand()] * $val(nn)]
set dst [expr int($tmp)]
puts "$src to $dstn"
$ns_ connect $udp_($src) $null_($dst)
$ns_ at [expr 0.1 * $i] "$cbr_($src) start"
#$ns_ at [expr 0.01 * $i] "puts " cbr_($i) start" "
}
for {set i 0} {$i < $val(nn)} {incr i} {
$ns_ at $val(simtime) "$node_($i) reset";
}
$ns_ at $val(simtime) "stop"
$ns_ at $val(simtime).01 "puts "NS EXITING..." ; $ns_ halt"

18. proc stop {} {
global ns_ tracefd
$ns_ flush-trace
close $tracefd
}
puts "Starting Simulation..."
$ns_ run
Single hop:
# ======================================================================
# 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) 2 ;# number of
mobilenodes
set val(rp) AODV ;# routing protocol
set val(sc) "./scenario" ;# scenario file
set val(x) 3000.0 ;
set val(y) 400.0 ;
set val(simtime) 10.0 ; #sim time
set val(drate) 2.0e6 ; #default datarate
# ======================================================================
# Main Program
# ======================================================================
if { $argc != 2} {
puts "Wrong no. of cmdline args."
puts "Usage: ns single-hop.tcl -drate <dataRate>"
exit 0
}
proc getopt {argc argv} {
global val
lappend optlist drate
for {set i 0} {$i < $argc} {incr i} {
set arg [lindex $argv $i]
if {[string range $arg 0 0] != "-"} continue
set name [string range $arg 1 end]
set val($name) [lindex $argv [expr $i+1]]
}

19. }
getopt $argc $argv
#
# Initialize Global Variables
#
set ns_ [new Simulator]
set tracefd [open single-hop.tr w]
$ns_ trace-all $tracefd
#set namtrace [open single-hop.nam w] ;# for nam tracing
#$ns_ namtrace-all-wireless $namtrace $val(x) $val(y)
$ns_ use-newtrace
# set up topography object
set topo [new Topography]
$topo load_flatgrid $val(x) $val(y)
#
# Create God
#
set god_ [ create-god $val(nn) ]
$val(mac) set dataRate_ $val(drate)
$val(mac) set bandwidth_ 22.0e6
$val(prop) set pathlossExp_ 4.0
#
# Create the specified number of mobilenodes [$val(nn)] and "attach"
them
# to the channel.
# configure node
$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

20. -macTrace ON
-movementTrace OFF
for {set i 0} {$i < $val(nn) } {incr i} {
set node_($i) [$ns_ node]
$node_($i) random-motion 0 ;# disable random motion
}
#
# Provide initial (X,Y, Z=0) co-ordinates for mobilenodes
#
#Node 0 is the source, Node 1 is the dst
$node_(0) set X_ 100.0
$node_(0) set Y_ 200.0
$node_(0) set Z_ 0.0
$node_(1) set X_ 300.0
$node_(1) set Y_ 200.0
$node_(1) set Z_ 0.0
# Define node initial position in nam
for {set i 0} {$i < $val(nn)} {incr i} {
# 20 defines the node size in nam, must adjust it according to your
scenario
# The function must be called after mobility model is defined
$ns_ initial_node_pos $node_($i) 20
}
#Attach a data-sink to destination
set null_(0) [new Agent/Null]
$ns_ attach-agent $node_(1) $null_(0)
#traffic...make src talk to dst
set udp_(0) [new Agent/UDP]

21. $ns_ attach-agent $node_(0) $udp_(0)
set cbr_(0) [new Application/Traffic/CBR]
$cbr_(0) set packetSize_ 2048
$udp_(0) set packetSize_ 2048
$cbr_(0) set interval_ 0.0008
$cbr_(0) set random_ 0.96749
$cbr_(0) set maxpkts_ 1000000
$cbr_(0) attach-agent $udp_(0)
$ns_ connect $udp_(0) $null_(0)
$ns_ at 0.0 "$cbr_(0) start"
#
# Tell nodes when the simulation ends
#
for {set i 0} {$i < $val(nn) } {incr i} {
$ns_ at $val(simtime) "$node_($i) reset";
}
$ns_ at $val(simtime) "stop"
$ns_ at $val(simtime).01 "puts "NS EXITING..." ; $ns_ halt"
proc stop {} {
global ns_ tracefd
$ns_ flush-trace
close $tracefd
}
puts "Starting Simulation..."
$ns_ run