[14356] in North American Network Operators' Group
Re: Whoa; the 3 network?
daemon@ATHENA.MIT.EDU (Eric Osborne)
Tue Dec 23 22:22:05 1997
From: Eric Osborne <osborne@notcom.com>
To: web@typo.org (Wayne Bouchard)
Date: Tue, 23 Dec 1997 22:13:40 -0500 (EST)
Cc: osborne@notcom.com, nanog@pigott.net, nanog@merit.edu
In-Reply-To: <199712240251.TAA12616@typo.org> from "Wayne Bouchard" at Dec 23, 97 07:51:42 pm
Right, but since each border router off of the public Internet can't
advertise anything smaller than /24 (would *your* router accept an
advertisement for 3.0.0.0/27?), each seperate office needs at least a /24.
Yeah, NAT can take care of the internal addressing, but you're still stuck
with the fact that you "only" can have 256 seperate border routers.
I was never arguing that GE needs and/or deserves the full 3.0.0.0, as I have
little or no experience with their network needs. (I do note, however, that
I can't find *any* of 3.0.0.0/8 in Mae-East via Digex right now). I believe
it was Lee Ving who said "Let's have a war/We need the space".
Fini.
eric
> Okay...
>
> RFC1918 host
> |
> |
> border router <----+
> | |
> | |
> public internet |
> | |
> | | IP tunnel between corporate offices
> border router | preserving RFC1918 addressing.
> | |
> | |
> RFC1918 host <----+
>
> With carefull use of NAT at appropriate points, it is technically
> possible to limit the amount of publicly visible addresses you use to
> (quite conceivably) 2 or 3 traditional class C blocks. Obviously this
> is not necessarily a real world model but you get the picture. I don't
> personally believe that an "enterprise" network should ever require
> more than one (PERHAPS two) /16 networks. When you get to ISPs and
> similar, the need for addresses will rise dramatically but it can
> still be kept under control if you're carefull about maintaining
> hierarchical addressing structures.
>
> ----------------------------------------------------------------------
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