Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!thunder.mcrcim.mcgill.edu!snorkelwacker.mit.edu!spool.mu.edu!uwm.edu!wuarchive!usc!rpi!zaphod.mps.ohio-state.edu!ncar!csn!boulder!recnews From: ccci!tcs@uunet.UU.NET (Terry Slattery) Newsgroups: comp.dcom.sys.cisco Subject: Re: backplane backbone, routing or bridging? Message-ID: <9106261402.AA12717@ccci> Date: 26 Jun 91 14:02:06 GMT Sender: news@colorado.edu Organization: University of Colorado, Boulder Lines: 12 Return-Path: >Then there is the case of multiple IP subnetworks on a single cable with >different subnet masks. This is also illegal. > >Right? > >Greg With OSPF, you could have the different IP subnetworks on the same cable but in different areas. The OSPF area id would keep them distinct. This implies an area border router for each area on the same cable. -tcs