[LARTC] Re: tc n00b

[Abhijit Menon-Sen <ams@toroid.org>]

Hello Jonathan.

At 2007-07-30 12:40:00 +0100, jonathan.gazeley@bristol.ac.uk wrote:
>
> So far I have managed to get the download limits working. However I
> need to shape on both interfaces so I recycled the same code to apply
> to uploads but it didn't work and I can't figure out why

That's not really enough information to try to debug your problem, but I
can think of one problem you might encounter. Since you're doing NAT for
your clients, you should be aware that the source address is rewritten
(i.e. in nat/POSTROUTING) _before_ egress QoS processing.

So if you're trying to classify outgoing traffic based on their source
IP address, it won't work.

One alternative is to mark packets from the internal network (i.e. use
-J MARK --set-mark N in mangle/PREROUTING), and write a filter on the
outgoing interface that assigns traffic to classes based on how it's
marked (u32 match mark ...). (If you want more details, ask.)

(If anyone has other suggestions, I would be interested in them too.)

-- ams
_______________________________________________
LARTC mailing list
LARTC@mailman.ds9a.nl
http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc