ex1.tcl

set ns [new Simulator]

set nf [open out.nam w]
$ns namtrace-all $nf

proc fim {} {

    global ns nf
    $ns flush-trace
    close $nf
    exec nam out.nam
    exit 0
}

set n0 [$ns node]
set n1 [$ns node]
set n2 [$ns node]
set n3 [$ns node]

#Routers

set n4 [$ns node]
set n5 [$ns node]

$ns duplex-link $n0 $n4 0.05Mb 0.0001ms DropTail
$ns duplex-link $n1 $n4 0.05Mb 0.0001ms DropTail
$ns duplex-link $n2 $n5 0.05Mb 0.0001ms DropTail
$ns duplex-link $n3 $n5 0.05Mb 0.0001ms DropTail

#Routers
$ns duplex-link $n4 $n5 0.06Mb 10ms DropTail

#Orientaçoes
$ns duplex-link-op $n0 $n4 orient right-down
$ns duplex-link-op $n1 $n4 orient right-up
$ns duplex-link-op $n2 $n5 orient left-down
$ns duplex-link-op $n3 $n5 orient left-up

$ns duplex-link-op $n4 $n5 orient right

$ns duplex-link-op $n4 $n5 queuePos 0.5

#Novo agente UDP
set udp0 [new Agent/UDP]
$ns attach-agent $n0 $udp0

#Novo CBR
set cbr0 [new Application/Traffic/CBR]
$cbr0 set packetSize_ 20
$cbr0 set interval_ 0.005s
$cbr0 attach-agent $udp0

#Novo agenteUDP
set udp1 [new Agent/UDP]
$ns attach-agent $n1 $udp1

#Novo CBR
set cbr1 [new Application/Traffic/CBR]
$cbr1 set packetSize_ 20
$cbr1 set interval_ 0.005s
$cbr1 attach-agent $udp1

#Novo agente UDP
set udp2 [new Agent/UDP]
$ns attach-agent $n2 $udp2

#Novo CBR
set cbr2 [new Application/Traffic/CBR]
$cbr2 set packetSize_ 20
$cbr2 set interval_ 0.005s
$cbr2 attach-agent $udp2

#Novo agenteUDP
set udp3 [new Agent/UDP]
$ns attach-agent $n3 $udp3

#Novo CBR
set cbr3 [new Application/Traffic/CBR]
$cbr3 set packetSize_ 20
$cbr3 set interval_ 0.005s
$cbr3 attach-agent $udp3

#Novo Null
set null0 [new Agent/Null]
$ns attach-agent $n0 $null0
#Novo Null
set null1 [new Agent/Null]
$ns attach-agent $n1 $null1
#Novo Null
set null2 [new Agent/Null]
$ns attach-agent $n2 $null2
#Novo Null
set null3 [new Agent/Null]
$ns attach-agent $n3 $null3

$ns connect $udp0 $null2
$ns connect $udp2 $null1
$ns connect $udp1 $null3
$ns connect $udp3 $null0

$udp0 set class_ 1
$udp1 set class_ 2
$udp2 set class_ 3
$udp3 set class_ 4

$ns color 1 red
$ns color 2 blue
$ns color 3 green
$ns color 4 yellow

$ns at 0.5 "$cbr0 start"
$ns at 0.5 "$cbr1 start"
$ns at 0.5 "$cbr2 start"
$ns at 0.5 "$cbr3 start"
$ns at 4.5 "$cbr0 stop"
$ns at 4.5 "$cbr1 stop"
$ns at 4.5 "$cbr2 stop"
$ns at 4.5 "$cbr3 stop"


$ns at 5.0 "fim"

$ns run