Re: complicated routing situation - can this be solved?

2000-05-10 Thread Luigi Rizzo

Chris,

I am a bit uncertain on what you want to do, could you clarify ?
If all you want on the ethernet interface is to use a subnet of
132.222.32.45/23, this can be done, it just suffices that you
set the netmask and default routers correctly on your ethernet,
and on the router you set net.link.ether.inet.proxyall (important)
and net.inet.ip.forwarding.

Speaking of bridging, it seems unlikely that it can be implemented
given the different frame sizes (it is not only a matter of headers)
between FDDI and ethernet which would require fragmentation and
reassembly of packets.

hope this helps

cheers
luigi
---+-
  Luigi RIZZO, [EMAIL PROTECTED]  . Dip. di Ing. dell'Informazione
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> 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 [EMAIL PROTECTED]
> 
> 
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> 



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complicated routing situation - can this be solved?

2000-05-10 Thread Christoph Kukulies


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 [EMAIL PROTECTED]


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