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Date:      Wed, 10 May 2000 10:50:02 +0200 (CEST)
From:      Christoph Kukulies <kuku@gilberto.physik.rwth-aachen.de>
To:        hackers@freebsd.org
Subject:   complicated routing situation - can this be solved?
Message-ID:  <200005100850.KAA54067@gilberto.physik.rwth-aachen.de>

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Sorry, if this may be more a general IP routing question but since
FreeBSD is predistined to solve complicated routing
situations  and a lot of expertise is concentrated here
I'm coming up with this question here.

I have dedicated a P90 box to act as a router between
a FDDI network and a 100MBit fast ethernet network and put
FreeBSD on it. (Thanks to Wilko here again for Aled their support
with FDDI hardware).

IP address space is tough and the FDDI concentrator can only run
the two networks as sketched out below. To me can only be given a
few addresses out of one of these networks.

Ideally I would like to have had a bridge but BRIDGE is not supported for
the DEFPA (fpa0) device in FreeBSD. I also talked to people at
Drawbridge http://drawbridge.tamu.edu/ and say said that due to
different framing between FDDI and Ethernet bridging is not (yet) supported.
One of the authors said he could write some experimental code relatively
fast but the vague promis is all I have for the moment.

Here is the situation:

                     --------------------
                     |                  |
   -------FDDI-------|     FreeBSD Box  |------100 MBit Fast Ethernet-----
   132.222.32.x      |fpa0          sis0|         (some addresses out of
   132.222.33.x      --------------------          132.222.33.151-170)
                 132.222.32.45/23     132.222.33.150


I tried with the -interface modifier to no avail. Any ideas how to solve
this? If possible at all?

-- 
Chris Christoph P. U. Kukulies kuku@gil.physik.rwth-aachen.de


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