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Date:      Wed, 08 Sep 2004 15:48:46 -0700
From:      Maksim Yevmenkin <maksim.yevmenkin@savvis.net>
To:        Forrest Aldrich <forrie@forrie.com>
Cc:        freebsd-net@freebsd.org
Subject:   Re: VoIP and IPFW
Message-ID:  <413F8C4E.5040704@savvis.net>
In-Reply-To: <413F8782.5000606@forrie.com>
References:  <413F6BBE.1050202@forrie.com> <413F745F.3020306@savvis.net> <413F79DC.1010204@comcast.net> <413F7C7F.2070603@savvis.net> <413F8782.5000606@forrie.com>

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Forrest Aldrich wrote:
> I'm also speaking of specific ipfw configuration to support this 
> functionality (QoS, traffic shaping, etc)...

i do not use any of it, and, i do not think it is even required. 
normally cable/dsl links are asymmetrical, so your outbound is already 
capped at 128k or whatever. inbound is whatever speed you have. i have 
2mbit. at this speed i can run speed test (from dslreports.com) and talk 
on the phone at the same time and hardly notice anything. sometimes 
things may get bad for a few seconds (like bad cell phone), but normally 
it will recover.

if you really want to do shaping then use dummynet(4). just create a 
pipe between vonage servers and your box and set it up the way you like.

btw, a friend of mine uses vonage behind his smc barricade router. seems 
to work just fine. he said he did not have to open anything on the router.

max


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