LARTC - Feb 2003 - [tcng] example

hi,
i would like to use just one interface to shape/police traffic, lets have
following config :


users -----[eth1]===[eth0]------ Internet


what I think to do is :

$m1 = SLB(cir 20kbps, cbs 10kB);

dev eth1 {
 
ingress{
	class(<$i1>) if ip_dst = 192.168.0.5 && SLB_else_drop($m1);
	class(<$i2>) if ip_dst = 192.168.0.5 && SLB_else_drop($m1);
	drop if 1;
}
egress {
	class(<$c1>) if ip_dst = 192.168.0.5;
	class(<$c2>) if ip_dst = 192.168.0.6;
	 ......
	drop if 1;

	htb() {
		$c1 = class(rate 20kbps, rq2 1) {sfq;};
		$c2 = class(rate 100kbps, rq2 10) {sfq;};
	}
}
}


My main question is about INGRESS.. I see in the docs there is many other
metering primitives and can''t find which one is better to use.. From
what I know it is not possible to shape traffic on ingress interface..
What about this instead of SLB:

	$m1 = bucket(rate 20kbps, burst 10kB);

	class(<$i1>) if ip_dst = 192.168.0.5 && conform $m1;

what is the difference..
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