Re: VOIP Challenges...

[rsenykoff@xxxxxxxxxxxxxxx]

> Greetings - 
>  
> I'm new to QoS, so please be gentle (and yes,
I've RTFM, though I 
> don't understand every bit of it)
>  
> Here's the thing; I've tried several scripts--simple
and complex--
> for classifying my Vonage traffic into a high-priority queue, but
no
> matter what I do it doesn't seem to work.  Right now I'm using
the 
> HTB script I'll include below, which is a mashing together of 
> several scripts I've found along with a lot of the LARTC HOWTO 
> stuff.  Bottom line; if I load up my *outbound* connection and
then 
> try to make a Vonage call, my voice is so chopped up at the other
> end that noone can understand me.
>  
> If it makes a difference, I *am* getting a few
errors when I run 
> this script, but I'm a relative newbie to QoS so I'm not sure where
> my errors lie.  I also thought that I might be having trouble
with 
> my MARKs in IPTABLES, so I tossed in a line to filter based on IP
> DST/SRC instead of relying on the marks (in a different, working 
> IPTABLES script).
>  
> Any ideas?
>  
> Thanks.
>  

It looks like you're trying to send VoIP to the root
class. Instead, create a separate high priority class just for VoIP (alongside
of your ones for ssh etc) and instead of SFQ, attach a PFIFO queue. Also,
shorten the lengths on queues for non-interactive traffic. Keep the VoIP
PFIFO default length, and this will prevent the HTB from dropping VoIP
packets when your other classes need to hand back bandwidth when you start
a call.

-Ron