[125562] in North American Network Operators' Group
Re: Rate of growth on IPv6 not fast enough?
daemon@ATHENA.MIT.EDU (Florian Weimer)
Mon Apr 19 18:11:16 2010
From: Florian Weimer <fw@deneb.enyo.de>
To: NANOG list <nanog@nanog.org>
Date: Tue, 20 Apr 2010 00:10:50 +0200
In-Reply-To: <20100419180719.GB97473@ussenterprise.ufp.org> (Leo Bicknell's
message of "Mon, 19 Apr 2010 11:07:19 -0700")
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
* Leo Bicknell:
> I know of no platform that does hardware NAT. Rather, NAT is a CPU
> function. While this is another interesting scaling issue, it means
> this data is not going in the FIB (hardware forwarding database),
> but rather is stored in a CPU accessible database.
If you NAT all traffic, the NAT database needs the same level of
efficiency as the FIB.
You could probably even join the two (you should check that the
corresponding RIB entry is still current, but that can probably be
forced to be cheap).
