Re: [LARTC] VOIP Challenges...

[Ed Wildgoose <lists@wildgooses.com>]

>I'm very
>tempted to just go back to my Cisco gear for the QoS and leave this stuff
>be.
>
>The only last lucid--somewhat--thought that I had was that I might need to
>slow down my eth1 connection, which is to the switch, and hence all devices
>including my desktop--the one which hogs all bandwidth--because maybe the
>Vonage box can't get through.  Only trouble with that theory, though, is
>watching in Ethereal, the SIP packets come in with no delay... It's the RTP
>stuff that gets hung up on the way out.
>  
>

I think you need to backup a bit and do some more debugging.  You need 
to discover if your QOS is working or not on your data.  If it is, then 
remember that you have full control of the outgoing connection so no 
queuing should ever occur if you don't want it o.  If your packets are 
being held up then change your packet marking so that they dont.  You 
are going to have the same problems on your CISCO box I should think if 
it's just a config problem.

The other issue though is that you might genuinely be releasing packets 
too fast and getting queuing on your modem buffer.  Try turning down the 
outlet speed quite a lot, say 50% and see how you get on.  Debug that 
part first before turning it up again.

Also try to turn on some kind of QOS bits with the vonage router so that 
it's a little easier to mark your packets.  Use something like ethereal 
or tcpdump to check that everything really is going to and from the 
addresses that you think it is.

Please also trim your replies when sending to mailing lists...

Good luck

Ed W
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