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Date:      Mon, 29 Mar 1999 15:34:58 -0600 (CST)
From:      Anthony Kimball <alk@pobox.com>
To:        cmetz@inner.net
Cc:        miket@dnai.com, mike@sentex.net, freebsd-net@FreeBSD.ORG
Subject:   Re: FreeBSD as a router 
Message-ID:  <14079.61724.162248.667212@avalon.east>
References:  <4.1.19990329115145.00a62ab0@mail.dnai.com> <199903292051.UAA10838@inner.net>

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Quoth Craig Metz on Mon, 29 March:
: 
:   If you're using FreeBSD as a firewall between servers and the Internet, what
: really matters here is not the 100Mb/s local links but the speed of your WAN
: link, because that's how much traffic is really going to move through that box.
: Can FreeBSD keep up with a T1/E1 line? I'd be surprised if it couldn't. Can
: FreeBSD keep up with a DS3? Given good enough hardware, probably. Faster than
: that as total traffic going through the box and you need to worry.

Since the discussion is occurring at this level, it is probably
helpful to note that the *size* of the packets also plays a large role
in determining maximum routing throughput: The box has to do a lot
more routing for 512B packets than it does for 1024B packets at the
same bandwidth.

I'm guessing that a thorough search would show up some clock
vs. packet-size vs. bandwidth limit graphs for FreeBSD, Linux,
various commerical routers.


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