set ns [new Simulator]
set nf [open out.nam w]
$ns namtrace-all $nf
set nt [open out.tr w]
$ns trace-all $nt
proc finish {} {
global ns nf
$ns flush-trace
close $nf
exec nam out.nam &
exit 0
}
set h1 [$ns node]
set r1 [$ns node]
set h2 [$ns node]
set h3 [$ns node]
set r2 [$ns node]
set h4 [$ns node]
$ns duplex-link $h1 $r1 10Mb 20ms DropTail
$ns duplex-link $h2 $r1 10Mb 20ms DropTail
$ns duplex-link $r1 $r2 1.5Mb 20ms DropTail
$ns duplex-link $r2 $h3 10Mb 20ms DropTail
$ns duplex-link $r2 $h4 5Mb 20ms DropTail
$ns duplex-link-op $h1 $r1 orient right-down
$ns duplex-link-op $h2 $r1 orient right-up
$ns duplex-link-op $r1 $r2 orient right
$ns duplex-link-op $r2 $h3 orient right-up
$ns duplex-link-op $r2 $h4 orient right-down
set udp [new Agent/UDP]
$ns attach-agent $h2 $udp
set cbr [new Application/Traffic/CBR]
#$cbr set interval_ 0.0005
$cbr attach-agent $udp
set null [new Agent/Null]
$ns attach-agent $h4 $null
set tcp [new Agent/TCP]
$ns attach-agent $h1 $tcp
set ftp [new Application/FTP]
#$ftp set interval_ 0.0005
$ftp attach-agent $tcp
set sink [new Agent/TCPSink]
$ns attach-agent $h3 $sink
$ns connect $udp $null
$ns connect $tcp $sink
$ns at 0.0 "$cbr start"
$ns at 0.0 "$ftp start"
$ns at 10.0 "finish"
$ns run
set nf [open out.nam w]
$ns namtrace-all $nf
set nt [open out.tr w]
$ns trace-all $nt
proc finish {} {
global ns nf
$ns flush-trace
close $nf
exec nam out.nam &
exit 0
}
set h1 [$ns node]
set r1 [$ns node]
set h2 [$ns node]
set h3 [$ns node]
set r2 [$ns node]
set h4 [$ns node]
$ns duplex-link $h1 $r1 10Mb 20ms DropTail
$ns duplex-link $h2 $r1 10Mb 20ms DropTail
$ns duplex-link $r1 $r2 1.5Mb 20ms DropTail
$ns duplex-link $r2 $h3 10Mb 20ms DropTail
$ns duplex-link $r2 $h4 5Mb 20ms DropTail
$ns duplex-link-op $h1 $r1 orient right-down
$ns duplex-link-op $h2 $r1 orient right-up
$ns duplex-link-op $r1 $r2 orient right
$ns duplex-link-op $r2 $h3 orient right-up
$ns duplex-link-op $r2 $h4 orient right-down
set udp [new Agent/UDP]
$ns attach-agent $h2 $udp
set cbr [new Application/Traffic/CBR]
#$cbr set interval_ 0.0005
$cbr attach-agent $udp
set null [new Agent/Null]
$ns attach-agent $h4 $null
set tcp [new Agent/TCP]
$ns attach-agent $h1 $tcp
set ftp [new Application/FTP]
#$ftp set interval_ 0.0005
$ftp attach-agent $tcp
set sink [new Agent/TCPSink]
$ns attach-agent $h3 $sink
$ns connect $udp $null
$ns connect $tcp $sink
$ns at 0.0 "$cbr start"
$ns at 0.0 "$ftp start"
$ns at 10.0 "finish"
$ns run
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