I hope you've read
http://shorewall.net/traffic_shaping.htm
completely.

On 11/16/06, Macram Zaarour <[EMAIL PROTECTED]> wrote:
> Setting the device  OUT-BANDWIDTH on NAT side to below 128k(my download
> speed) will surely affect the internal calls voice quality knowing that ulaw
> takes up to 80k per call and all calls are proxied on the server. So two
> internal calls traffic consumption will far exceed my download speed of 128k
You *don't* need traffic shaping on the LAN side. Typically it's very
unlikely that you're going to saturate that link. You *must* always
shape on the most-constrained link. And if you don't have the most
constrained link (because of massive queues at the ISP), then you must
reduce the incoming bandwidth and make it the most constrained link to
be able to effectively shape the traffic.

On the WAN side (128K link) it doesn't need to be far less than 128K.
Just enough less that queuing is on the shorewall box and not on the
ISP box.

> tcclasses  ( I am limiting  default traffic to 20k on NAT side)
> eth1  1 30kbps full 1
> eth1  2 full full    2  default
You can't say give 30kbps guaranteed to class 1, and say "full" to
class 2!! Please drop the guaranteed bandwidth to 128-30K.

> eth0   1 30kbps full 1
> eth0  2 20k 20k 2  default
These are not necessary, if you shape correctly on the WAN side.

Prasanna.

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