remove-packet-header AODV aSRM CtrMcast Diffusion Encap HttpInval IVS LDP mcastCtrl MFTP MPLS RAP Resv TCP TCPA TFRC TFRC_ACK TORA GAF UMP 
set ns [new Simulator]

$ns color 0 blue
$ns color 1 red
$ns color 2 white

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

puts n0=[$n0 id]
puts n1=[$n1 id]
puts n2=[$n2 id]
puts n3=[$n3 id]

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

Queue set limit_ 5

$ns duplex-link $n0 $n2 10Mb 2ms DropTail
$ns duplex-link $n1 $n2 10Mb 2ms DropTail
$ns duplex-link $n2 $n3 1.5Mb 10ms DropTail

$ns duplex-link-op $n0 $n2 orient right-up
$ns duplex-link-op $n1 $n2 orient right-down
$ns duplex-link-op $n2 $n3 orient right

$ns duplex-link-op $n2 $n3 queuePos 0.5

set rtp [new Agent/RTPMM]
$ns attach-agent $n0 $rtp

$rtp set interval_ 200ms
$rtp set rtcp_interval_ 1000ms		;# Interval for sending Sender's reports

set rtcp [new Agent/RTCPMM]
$ns attach-agent $n3 $rtcp

$rtcp set rtcp_interval_ 1000ms		;# Interval for sending Receiver's reports

$ns connect $rtp $rtcp

$ns at 0.1 "$rtp start"
$ns at 0.1 "$rtcp start"
$ns at 6.0 "finish"

proc finish {} {

	global ns f nf
	$ns flush-trace
	
	close $f
	close $nf

	puts "running nam..."
	exec nam out.nam &

	puts "done"
	exit 0
}

$ns run