dummynet + burst

[Ricardo Gross]

Hello 
fellow freebsd.org, I would like to know how to implement the system in my ipfw 
burst limit, currently I'm using dummynet for bandwidth control.and 
together with the dummynet would like to implement the burst be limited to 
shipping only after a certain time.

Today 
the rules I use for bandwidth control are these:

$fwcmd add 101 pipe 103 ip from any to 192.168.12.2 out layer2
$fwcmd add 102 pipe 104 ip from 192.168.12.2 to any in layer2
$fwcmd pipe 103 config bw 300Kbit/s queue 20KBytes
$fwcmd pipe 104 config bw 150Kbit/s queue 10KBytes

thanks for any help you can 
provide me, thanks!