Date: Wed, 10 May 2000 11:06:54 +0200 (CEST) From: Luigi Rizzo <luigi@info.iet.unipi.it> To: Christoph Kukulies <kuku@gilberto.physik.rwth-aachen.de> Cc: hackers@FreeBSD.ORG Subject: Re: complicated routing situation - can this be solved? Message-ID: <200005100906.LAA26410@info.iet.unipi.it> In-Reply-To: <200005100850.KAA54067@gilberto.physik.rwth-aachen.de> from Christoph Kukulies at "May 10, 2000 10:50:02 am"
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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, luigi@iet.unipi.it . Dip. di Ing. dell'Informazione http://www.iet.unipi.it/~luigi/ . Universita` di Pisa TEL/FAX: +39-050-568.533/522 . via Diotisalvi 2, 56126 PISA (Italy) Mobile +39-347-0373137 -----------------------------------+------------------------------------- > 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 > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-hackers" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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