TCL 5th class

set ns [new Simulator]
set f [open out.tr w]
set nf [open output.nam w]
$ns namtrace-all $nf
$ns trace-all $f
$ns color 1 Blue
$ns color 2 Red
proc finish { } {
    global ns f
    $ns flush-trace
    close $f
    exec nam output.nam &
    exit 0
    }
set n0 [$ns node]
set n1 [$ns node]
set n2 [$ns node]
set n3 [$ns node]
set n4 [$ns node]
set n5 [$ns node]
set n6 [$ns node]

$n0 color red
$n1 color blue
$n2 color green
$n3 color yellow
$n4 color cyan
$n5 color magenta
$n6 color orange

$ns duplex-link $n0 $n1 1mb 10ms DropTail
$ns duplex-link $n2 $n4 1mb 10ms DropTail
$ns duplex-link $n3 $n5 1mb 10ms DropTail
$ns simplex-link $n4 $n6 5mb 10ms DropTail

$ns duplex-link $n0 $n6 1mb 10ms DropTail
$ns duplex-link $n1 $n4 1mb 10ms DropTail
$ns duplex-link $n0 $n5 1mb 10ms DropTail
$ns duplex-link $n1 $n3 1mb 10ms DropTail
$ns duplex-link $n2 $n6 1mb 10ms DropTail

# Orientation
$ns duplex-link-op $n0 $n1 orient right-down
$ns duplex-link-op $n2 $n4 orient left-up
$ns duplex-link-op $n0 $n5 orient right

# Color
$ns duplex-link-op $n2 $n4 color "red"
$ns duplex-link-op $n0 $n1 color "blue"
$ns duplex-link-op $n3 $n5 color "yellow"
$ns simplex-link-op $n4 $n6 color "green"
$ns duplex-link-op $n1 $n4 color "magenta"
$ns duplex-link-op $n1 $n3 color "pink"

# Labelling connections(relayout first, then play)
$ns duplex-link-op $n0 $n5 label "n0 - n5 duplex"
$ns duplex-link-op $n2 $n4 label "n2 - n4 duplex"
$ns duplex-link-op $n3 $n5 label "n3 - n5 duplex"
$ns simplex-link-op $n2 $n6 label "n2 - n6 simplex"



set tcp [new Agent/TCP]
$ns attach-agent $n2 $tcp
set sink [new Agent/TCPSink]
$ns attach-agent $n5 $sink
$ns connect $tcp $sink
$tcp set fid_ 1
$tcp set packetSize_ 500

set ftp [new Application/FTP]
$ftp attach-agent $tcp
$ftp set type_ FTP
$ns at 0.0 "$ftp start"


$ns at 20.0 "finish"
$ns run