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- set ns [new Simulator]
- $ns color 1 Yellow
- $ns color 2 Red
- set nf [open out.nam w]
- $ns namtrace-all $nf
- proc fim {} {
- global ns nf
- $ns flush-trace
- close $nf
- exec nam out.nam
- exit 0
- }
- set n1 [$ns node]
- set n2 [$ns node]
- set n3 [$ns node]
- set n4 [$ns node]
- set n5 [$ns node]
- set n6 [$ns node]
- $ns duplex-link $n1 $n2 1Mb 10ms DropTail
- $ns duplex-link $n5 $n2 1Mb 10ms DropTail
- $ns duplex-link $n2 $n3 1Mb 10ms DropTail
- $ns duplex-link $n6 $n3 1Mb 10ms DropTail
- $ns duplex-link $n3 $n4 1Mb 10ms DropTail
- $ns duplex-link-op $n1 $n2 orient right
- $ns duplex-link-op $n5 $n2 orient up
- $ns duplex-link-op $n2 $n3 orient right
- $ns duplex-link-op $n6 $n3 orient up
- $ns duplex-link-op $n3 $n4 orient right
- set udp0 [new Agent/UDP]
- $ns attach-agent $n1 $udp0
- set cbr0 [new Application/Traffic/CBR]
- $cbr0 set packetSize_ 500
- $cbr0 set interval_ 0.005
- $cbr0 attach-agent $udp0
- set udp1 [new Agent/UDP]
- $ns attach-agent $n5 $udp1
- set cbr1 [new Application/Traffic/CBR]
- $cbr1 set packetSize_ 500
- $cbr1 set interval_ 0.005
- $cbr1 attach-agent $udp1
- set null0 [new Agent/Null]
- $ns attach-agent $n4 $null0
- set null1 [new Agent/Null]
- $ns attach-agent $n6 $null1
- $ns connect $udp0 $null0
- $ns connect $udp1 $null1
- $ns at 0.5 "$cbr0 start"
- $ns at 1.0 "$cbr1 start"
- $ns at 4.0 "$cbr1 stop"
- $ns at 4.5 "$cbr0 stop"
- $udp0 set class_ 1
- $udp1 set class_ 2
- $ns at 5.0 "fim"
- $ns run
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