gnome-text-editor five-node-wireless.tcl &

# ======================================================================
# Define Wireless Simulation Parameters
# ======================================================================
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                       ;# AODV Routing (Creates LOTS of broadcast ripples)
set val(x)              500                        ;# X dimension of topography
set val(y)              500                        ;# Y dimension of topography
set val(stop)           10.0                       ;# time of simulation end

# --- NEW BANDWIDTH OPTION ---
set val(bw)             11Mb                       ;# Set your custom bandwidth here (e.g., 2Mb, 11Mb, 54Mb)
Mac/802_11 set dataRate_ $val(bw)
Mac/802_11 set basicRate_ 1Mb

# ======================================================================
# Initialize Simulator and Trace Files
# ======================================================================
set ns_ [new Simulator]

set tracefd [open five-node-wireless.tr w]
$ns_ trace-all $tracefd

set namtrace [open five-node-wireless.nam w]
$ns_ namtrace-all-wireless $namtrace $val(x) $val(y)

# ======================================================================
# Setup Topography and God
# ======================================================================
set topo [new Topography]
$topo load_flatgrid $val(x) $val(y)

create-god $val(nn)

# ======================================================================
# 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

# ======================================================================
# Create 5 Nodes and Set Their Starting Positions
# ======================================================================
for {set i 0} {$i < $val(nn)} {incr i} {
    set node_($i) [$ns_ node]
    $node_($i) random-motion 0
}

$node_(0) set X_ 50.0
$node_(0) set Y_ 250.0
$node_(0) set Z_ 0.0

$node_(1) set X_ 150.0
$node_(1) set Y_ 100.0
$node_(1) set Z_ 0.0

$node_(2) set X_ 250.0
$node_(2) set Y_ 250.0
$node_(2) set Z_ 0.0

$node_(3) set X_ 350.0
$node_(3) set Y_ 400.0
$node_(3) set Z_ 0.0

$node_(4) set X_ 450.0
$node_(4) set Y_ 250.0
$node_(4) set Z_ 0.0

for {set i 0} {$i < $val(nn)} {incr i} {
    $ns_ initial_node_pos $node_($i) 30
}

# ======================================================================
# Setup Network Traffic (Heavy traffic = more ripples)
# ======================================================================
# Traffic 1: TCP from Node 0 to Node 4
set tcp [new Agent/TCP]
$ns_ attach-agent $node_(0) $tcp
set sink [new Agent/TCPSink]
$ns_ attach-agent $node_(4) $sink
$ns_ connect $tcp $sink
set ftp [new Application/FTP]
$ftp attach-agent $tcp
$ns_ at 0.5 "$ftp start"
$ns_ at 9.5 "$ftp stop"

# Traffic 2: Aggressive UDP from Node 1 to Node 3
set udp1 [new Agent/UDP]
$ns_ attach-agent $node_(1) $udp1
set null1 [new Agent/Null]
$ns_ attach-agent $node_(3) $null1
$ns_ connect $udp1 $null1
set cbr1 [new Application/Traffic/CBR]
$cbr1 set packetSize_ 1024
$cbr1 set interval_ 0.01   ;# Blasting 100 packets a second
$cbr1 attach-agent $udp1
$ns_ at 1.0 "$cbr1 start"
$ns_ at 8.5 "$cbr1 stop"

# Traffic 3: Aggressive UDP from Node 2 to Node 0 (Creates cross-traffic ripples)
set udp2 [new Agent/UDP]
$ns_ attach-agent $node_(2) $udp2
set null2 [new Agent/Null]
$ns_ attach-agent $node_(0) $null2
$ns_ connect $udp2 $null2
set cbr2 [new Application/Traffic/CBR]
$cbr2 set packetSize_ 1024
$cbr2 set interval_ 0.01   ;# Blasting another 100 packets a second
$cbr2 attach-agent $udp2
$ns_ at 1.5 "$cbr2 start"
$ns_ at 9.0 "$cbr2 stop"

# ======================================================================
# Stop the Simulation and Launch NAM
# ======================================================================
for {set i 0} {$i < $val(nn)} {incr i} {
    $ns_ at $val(stop) "$node_($i) reset"
}

proc finish {} {
    global ns_ tracefd namtrace
    $ns_ flush-trace
    close $tracefd
    close $namtrace
    puts "Simulation Complete. Launching NAM..."
    exec nam five-node-wireless.nam &
    exit 0
}

$ns_ at $val(stop) "finish"
$ns_ at [expr $val(stop) + 0.1] "puts \"NS EXITING...\" ; $ns_ halt"

puts "Starting Simulation..."
$ns_ run

ns five-node-wireless.tcl