Re: [LARTC] SEPARATING VOIP AND SURFING

[Andy Furniss <andy.furniss@dsl.pipex.com>]

Ricardo Soria wrote:


> 1.  So, starting at 80% of total 512kbit bandwidth
> (410kbit), there would be a waste of 102kbit.  Is this
> completely necessary??  I think this is to ensure I
> have the queue on my side, and the queue is not on the
> side of the ISP.  But, I fell tempted to think that
> 102kbit is too much for this purpose, considering that
> I really have 512kbit all time.  What would you
> finally recommend ??

It depends how much you care about latency & what the people on your LAN 
do/use.

I don't know what's acceptable latency and jitter for VOIP.


> 2.  Could you please tell me a secure and trustworthy
> way to know if I am having queued packets under this
> class??

Again how much you have to do depends on the usage of your network. You 
can explicitly mark each type of interavtive you want to priorotise.

If you have 20 hackers using P2P 24/7 then life is going to be harder - 
if they just browse and email It's probably not worth trying too hard.

> 
> 3.  I am creating 2 different htb classes, one for
> interactive, and another for bulk, and also, 2
> different sfq inferior classes, one for each service. 
> What else can I do to avoid sending a "mix of traffic"
> ??

If you have one queue for bulk it would need to be esfq if you want per 
IP fairness. If you'd rather not patch then your origional queue for 
each user is OK - but you should change SFQ's queue length.

> 
> 4.  If you still have a copy of my script, you can see
> I am giving "prio 0" to interactive classes, and "prio
> 1" to bulk classes.  I also tested giving prio 0 and
> prio 1 at filters setup (and also, prio 1 to
> everybody, I am not so sure what worked better).  What
> else can I do to emphasize interactive traffic
> priority??
> 

The prio is most important, other things I do are - make sure 
interactive has large burst and bulk none. Rather than mess with r2q I 
set quantum to my MTU for HTB and SFQ. HTB can be tweaked to be more 
accurate - but you may not need to bother. I also set a rate for my 
interactive larger than I ever expect to be used, this is probably 
unneccesary, but then I count game traffic a top prio - and I was using 
upto 20K bytes/sec incoming while on a 64 player enemy territory server 
recently.

> Sorry for the annoyances, very thanks in advance.

That's OK - It would help to know what the users do and how many are 
active at once etc.

Andy.

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