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Date:      Wed, 18 Sep 1996 09:59:47 -0500 (CDT)
From:      Joe Greco <jgreco@brasil.moneng.mei.com>
To:        dennis@etinc.com (Dennis)
Cc:        jgreco@brasil.moneng.mei.com, hackers@freebsd.org
Subject:   Re: FreeBSD box as a router
Message-ID:  <199609181459.JAA08984@brasil.moneng.mei.com>
In-Reply-To: <199609181435.KAA02942@etinc.com> from "Dennis" at Sep 18, 96 10:35:31 am

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> J. Greco writes....
> 
> >If you just need static routing, 8MB is plenty adequate.  If you want to
> >use Gated and do BGP4, etc, you will probably need more (since I haven't
> >had to start doing this myself, I don't know how much more).
> 
> a LOT! like 48Meg to hold a full table and to handle worst-case situations.

Hmm, thanks for the hint :-)

> >The machine is a 486DX/133 with two Kingston KNE-40T's (DEC 21041) and
> >one of the Emerging Technologies ET-50XX cards running a T1 CSU/DSU.
> >It can saturate all its links simultaneously with bandwidth to spare...
> >unless all the packets are really small.  I start seeing lost packets once
> >I get into the 4000 pkts/sec range, IIRC.  It is a great router :-)
> 
> of course this is nothing that some extra memory wouldn't fix. But 4000pps is 
> very high for a single T1.

No.  It runs out of CPU.  I suspect that I could even nail a Pentium at
some point.  However, typical Internet traffic is NOT UDP packets with 1
data byte - my particular stress test.  So I do not worry TOOO much about
this "limit"  :-)

... JG



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