ext_if="vr0"
int_if="fxp0"
test="10.201.10.10"

altq on $ext_if bandwidth 10Mb hfsc queue { default-out, test-out }
queue default-out bandwidth 9Mb hfsc (default)
queue test-out bandwidth 512Kb hfsc (upperlimit 1Mb) qlimit 100

altq on $int_if bandwidth 10Mb hfsc queue { default-in, test-in }
queue default-in bandwidth 9Mb hfsc (default)
queue test-in bandwidth 512Kb hfsc (upperlimit 1Mb) qlimit 100

pass out on $ext_if from $test to any queue test-out
pass out on $int_if from any to $test queue test-in