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Date:      Sat, 15 Mar 2003 10:18:13 -0500
From:      Bill Moran <wmoran@potentialtech.com>
To:        "W. J. Williams" <will@willardjwilliams.com>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: five networks
Message-ID:  <3E734435.8090401@potentialtech.com>
In-Reply-To: <20030315145947.85804.qmail@web13505.mail.yahoo.com>
References:  <20030315145947.85804.qmail@web13505.mail.yahoo.com>

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W. J. Williams wrote:
> why isn`t this working:
> 
> 1. I would like to configure a separate network on five freebsd boxes.
> 
> 192.168.0
> 192.168.1
> 192.168.2
> 192.168.3
> 192.168.4
> 
> 
> 2.  My DSL router has network 192.168.0, I also have one of my fbsd boxes
> in this network (192.168.0.2)
> 
> 3.  I can add the other machines to the 192.168.0 network, no problem,
> using default router 192.168.0.1, broadcast 255.255.255.0,
> 
> 4.  I tried to configure 192.168.2.1 on one box, using
> gateway_enable="YES", router_enable="YES",
> defaultrouter=192.168.2.1....doesnt work.
> 
> what am i doing wrong in getting this box up and running?

You don't understand routing.
If you ifconfig a box to be 192.168.2.1/24 and then set the default router
to be 192.168.2.1: the machine sends all traffic not destined for
192.168.2.0/24 to itself to be routed.  However, it didn't know how
to route the traffic the first time, thus it isn't going to work the
second time either.  One good rule to remember is that a default gateway
should always be a different machine, and one that has _more_ routing
capability that the one you're configuring.
If I understand your description correctly, the default gateway should
be 192.168.0.1 for all these machines.
I can only assume that you're configuring the system in such a manner
for experimental purposes, as I can see no reason for such a configuration
in practice.
You leave netmasks off in your description, but I'm assuming that you're
using /24 for everything.  This means you'll have to put static routes in
each machine to allow them to get to 192.168.0.1, as they'll have no way
to automatically reach that machine.  The default router will also need
routes manually configured in order to be able to communicate back to them
(unless it's running some sort of route discovery program).

If you're not configuring the network like this for experimental reasons,
then you're configuring it very poorly.  A small network like you
describe should have all the machines on the same subnet: 192.168.0.2,
192.168.0.3, 192.168.0.4, etc

-- 
Bill Moran
Potential Technologies
http://www.potentialtech.com


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