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Date:      Fri, 25 Sep 1998 12:06:46 -0700
From:      Ulf Zimmermann <ulf@Alameda.net>
To:        "Jeffrey J. Mountin" <jeff-ml@mountin.net>, Bill Vermillion <bill@bilver.magicnet.net>, freebsd-isp@FreeBSD.ORG
Subject:   Re: Routing problem
Message-ID:  <19980925120646.F22112@Alameda.net>
In-Reply-To: <3.0.3.32.19980925135130.00774a48@207.227.119.2>; from Jeffrey J. Mountin on Fri, Sep 25, 1998 at 01:51:30PM -0500
References:  <3.0.3.32.19980925121618.00714074@207.227.119.2> <199809240148.VAA29188@bilver.magicnet.net> <360938BE.3569E424@eaznet.com> <199809240148.VAA29188@bilver.magicnet.net> <19980924150846.C24890@Alameda.net> <3.0.3.32.19980925121618.00714074@207.227.119.2> <19980925111651.D22112@Alameda.net> <3.0.3.32.19980925135130.00774a48@207.227.119.2>

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On Fri, Sep 25, 1998 at 01:51:30PM -0500, Jeffrey J. Mountin wrote:
> At 11:16 AM 9/25/98 -0700, Ulf Zimmermann wrote:
> >It is a valid netmask, but it wouldn't include 10.1.0.0/16 and 10.2.0.0/16 as
> >he wrote. 
> 
> Duh!  Missread and for the odd numbered network.
> 
> Guess this would be an example of network planning and boundaries.  Planning ahead to simplify masking is something that seems to have been missed recently, if you follow all the talk about IPFW and long rulesets.

Yep. Always plan your boundaries good. And I speak out of experience with
a campus of > 600 used networks out of 2 Class B and ~80 Class C with
basicly no way to aggregate anything, as all the /24 out of the Bs are
given out single.

> 
> 
> Jeff Mountin - Unix Systems TCP/IP networking
> jeff@mountin.net

-- 
Regards, Ulf.

---------------------------------------------------------------------
Ulf Zimmermann, 1525 Pacific Ave., Alameda, CA-94501, #: 510-769-2936
Alameda Networks, Inc. | http://www.Alameda.net  | Fax#: 510-521-5073

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