Re: Connecting 9402-200 to Linksys router

LinkSys allows you to configure the "range" of IP addresses that
DHCP will dynamically assign, so you can "reserve" a range of
IP addresses within the 192.168.xx.yy range so that they will never
be "handed out" to a PC...  the default (for LinkSys BESFR41)
is to start at 192.168.1.100, so I can tell my AS/400 to use any
address in the range 192.168.1.2 through 192.168.1.99, because
DHCP will assign all PCs requesting a dynamic IP address to the
range 192.168.1.100 to 192.168.1.255.  Of course, you can change
this default of "192.168.1.100" to whatever value you want to use. :-)

Regards,

Mark S. Waterbury


----- Original Message -----
From: "Jay Maynard" <jmaynard@conmicro.cx>
To: <midrange-l@midrange.com>
Sent: Wednesday, October 02, 2002 11:44 AM
Subject: Re: Connecting 9402-200 to Linksys router


> On Wed, Oct 02, 2002 at 01:30:32PM -0400, Booth Martin wrote:
> > The linksys router assigns addresses for your PC's.  Probably they are
192
> > 168.12.100 & 101.  That'd suggest a number of 192.168.12.102 for your
3rd
> > device, the AS/400.
> > If in doubt, http://192.168.12.1   (no name, password of admin) should
show
> > you where your network is at.
>
> I'd recommend not picking 192.168.12.102, because if you were to add
another
> computer that got its addresses via DHCP, it'd conflict.
>
> The issue here is what's assigning the addresses and how. I had guessed
the
> Linksys was doing it, via DHCP, and the PCs were getting the assignments
and
> using them. You can check this easily enough: bring up the Network control
> panel, select the TCP/IP protocol properties, and see if the button to get
> addresses from a server is selected. If so, then DHCP is in use. You can
> find out what addresses your PCs are running at by bringing up a command
> window (in Windows NT, 2000, and XP; can't speak to others) and issuing
the
> command "ipconfig".
>
> You then need to find out what addresses the router is configured to
issue,
> and pick one on the same subnet that's not in the range the router will
> issue from. Assuming the example above is correct, the router is most
likely
> configured to hand out addresses from 192.168.12.100 through some higher
> number.
>
> The other thing to look at is the subnet mask. Again, assuming the example
> above is correct, the subnet mask is most likely 255.255.255.0. That means
> that any IP address with the first three numbers matching is considered to
> be directly reachable, and so on the same LAN. (This is a simplification,
> but for the present case it's good enough.) So any IP address starting
with
> 192.168.12 can be reached from your PCs without any further ado.
>
> The result: Pick something starting with 192.168.12 that's not in the
range
> the router will hand out via DHCP. I'd suggest 192.168.12.10, just because
> that separates the AS/400 from everything else in a way you can easily
> remember.
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