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Date:      Tue, 3 Sep 1996 07:23:57 +0100 (BST)
From:      Jim Dixon <jdd@vbc.net>
To:        "Daniel O'Callaghan" <danny@panda.hilink.com.au>
Cc:        Ulf Zimmermann <ulf@Lamb.net>, Joe Lee <joelee@col.com.hk>, isp@freebsd.org
Subject:   Re: is subnet #0 available for use?
Message-ID:  <Pine.BSI.3.91.960903071822.7075B-100000@uk1.vbc.net>
In-Reply-To: <Pine.BSF.3.91.960903150106.1649C-100000@panda.hilink.com.au>

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On Tue, 3 Sep 1996, Daniel O'Callaghan wrote:

> > will not allow you to use subnet #0. But FreeBSD will allow you. On Ciscos you
> > will need to set an extra parameter.
> 
> You'll also not get gated to work properly with subnet "all zeros" or 
> subnet "all ones".  IF you are interested in gated, that is.  The way to 
> define subnets with the maximum number of hosts is to define them with
> 4,8,16,32,64,64,32,16,8,4  hosts, and discard the 4 hosts at each end 
> (0,1,2,3,252,253,254,255)

? We use gated under FreeBSD and BSD/OS and have no problems with these
subnets.  We certainly do not discard any groups of 4 hosts.  For 
example, ns.vbc.net is at 194.207.0.1 and the four IP addresses 
194.207.1.0 through .3 are used for one of our router ports (.1 is our
end of the circuit, .2 the customer end).

--
Jim Dixon              VBCnet GB Ltd +44 117 929 1316  fax +44 117 927 2015
http://www.uk.vbc.net  VBCnet West   +1  408 971 2682  fax +1  408 971 2684




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