Hello, I m facing a problem when i tried to see the trace-queue command
through node n2 and n3. Wrong ans is coming repeatedly. Here is my script :
set ns [new Simulator]
$ns color 1 Blue
$ns color 2 Red
#Open the trace files
set tracefile1 [open out.tr w]
set winfile [open WinFile w]
set namfile [open out.nam w]
proc finish {} {
global ns tracefile1 namfile
$ns flush-trace
close $tracefile1
close $namfile
exec nam out.nam &
exit 0
}
set n0 [$ns node]
set n1 [$ns node]
set n2 [$ns node]
set n3 [$ns node]
set n4 [$ns node]
set n5 [$ns node]
$ns duplex-link $n0 $n2 2mb 10ms DropTail
$ns duplex-link $n1 $n2 2mb 10ms DropTail
$ns simplex-link $n2 $n3 0.3mb 100ms DropTail
$ns simplex-link $n3 $n2 0.3mb 100ms DropTail
$ns duplex-link $n3 $n4 0.5mb 40ms DropTail
$ns duplex-link $n3 $n5 0.5mb 30ms DropTail
$ns duplex-link-op $n0 $n2 orient right-down
$ns duplex-link-op $n1 $n2 orient right-up
$ns duplex-link-op $n2 $n3 orient right
$ns duplex-link-op $n3 $n2 orient left
$ns duplex-link-op $n3 $n4 orient right-up
$ns duplex-link-op $n3 $n5 orient right-down
$ns queue-limit $n2 $n3 20
$ns trace-queue $n2 $n3 $tracefile1
$ns namtrace-queue $namfile
set tcp [new Agent/TCP]
$ns attach-agent $n0 $tcp
set sink [new Agent/TCPSink]
$ns attach-agent $n4 $sink
$ns connect $tcp $sink
$tcp set fid_ 1
$tcp set packetSize_ 552
set ftp [new Application/FTP]
$ftp attach-agent $tcp
set udp [new Agent/UDP]
$ns attach-agent $n1 $udp
set null [new Agent/Null]
$ns attach-agent $n5 $null
$ns connect $udp $null
$udp set fid_ 2
set cbr [new Application/Traffic/CBR]
$cbr attach-agent $udp
$cbr set packetSize_ 1000
$cbr set rate_ 0.01Mb
$cbr set random_ false
$ns at 0.1 "$cbr start"
$ns at 1.0 "$ftp start"
$ns at 124.0 "$ftp stop"
$ns at 124.5 "$cbr stop"
proc plotWindow {tcpSource file} {
global ns
set time 0.1
set now [$ns now]
set cwnd [$tcpSource set cwnd_]
puts $file "$now $cwnd"
$ns at [expr $now+$time] "plotWindow $tcpSource $file"
}
$ns at 0.1 "plotWindow $tcp $winfile"
$ns at 125.0 "finish"
$ns run
The following Error came :
wrong # args: should be "_o3 self class proc n1 n2 ?file?"
(Simulator namtrace-queue line 1)
invoked from within
"$ns namtrace-queue $namfile"
(file "tuto-2t.tcl" line 48)
Can anyone tell me --- where i need 2 change ?
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