[LARTC] can't understand howto example

Stef Coene stef.coene@docum.org
Thu, 21 Oct 2004 21:22:31 +0200


On Thursday 21 October 2004 09:23, Hariett Jones wrote:
> tc class add dev $DEV parent 1: classid 1:1 htb rate ${UPLINK}kbit burst =
6k
This is for packets leaving device $DEV.

> tc qdisc add dev $DEV handle ffff: ingress
>
> tc filter add dev $DEV parent ffff: protocol ip prio 50 u32 match ip src \
>   0.0.0.0/0 police rate ${DOWNLINK}kbit burst 10k drop flowid :1
This is for packets entering device $DEV.  "flowid :1" is an other destinat=
ion=20
as "classid 1:1" in the previous line.  Read "flowid :1" as "flowid ffff:1".

> why does the download is being sent to class 1 which is limited by uplink=
 ?
> why the rate is being mentioned in filter and in class ?
=46or ingress, the destination is not important.  It's the policer that cou=
nts=20
and that limits the matching packets to a certain rate (${DOWNLINK}kbit in=
=20
this example).

Stef

=2D-=20
stef.coene@docum.org
=A0"Using Linux as bandwidth manager"
=A0 =A0 =A0http://www.docum.org/