Notes

#create links between the nodes



$ns duplex-link $node1 $node2 5Mb 15ms SFQ

$ns duplex-link $node2 $node3 10Mb 12ms SFQ

#Set Queue Size of link

$ns queue-limit $node2 $node3 5

#Setup a TCP connection

set tcpcon [new Agent/TCP/Sack1]

$ns attach-agent $node1 $tcpcon

set sink [new Agent/TCPSink/Sack1]

$ns attach-agent $node1 $sink

$ns connect $tcpcon $sink

$tcp set fid_ 1

$tcp set window_ 8000

$tcp set packetSize_ 500

#Setup a FTP over TCP connection

set ftpcon [new Application/FTP]

$ftpcon attach-agent $tcpcon

$ftpcon set type_ FTP

#Setup a UDP connection

set udpcon [new Agent/UDP]

$netsim attach-agent $node1 $udpcon

set null [new Agent/Null]

$netsim attach-agent $n5 $null

$netsim connect $udpcon $null

$udpcon set fid_ 2

#Setup a CBR over UDP connection

set cbrcon [new Application/Traffic/CBR]

$cbrcon attach-agent $udpcon

$cbrcon set type_ CBR

$cbrcon set packet_size_ 1500

$cbrcon set rate_ 0.05mb

$cbrcon set random_ false

$netsim at 0.1 “$cbrcon start”

$netsim at 2.0 “$ftpcon start”

$netsim at 15.0 “$ftpcon stop”

$netsim at 16.0 “$cbrcon stop”