Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!ucsd!ucbvax!NSIPO.NASA.GOV!medin
From: medin@NSIPO.NASA.GOV ("Milo S. Medin", NASA ARC NSI Project Office)
Newsgroups: comp.protocols.tcp-ip
Subject: Re: Can subnets be separated by another net?
Message-ID: <9007090116.AA01153@cincsac.arc.nasa.gov>
Date: 8 Jul 90 17:16:23 GMT
References: <2349.2697b7b8@csc.anu.oz>
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 15


Peter, I expect about 5-6 implementations there, though Proteon's is the
only real vendor shipping today.  I certainly don't want to speak for the
vendors on this; I'm sure they'll do it themselves.  This is just my best 
guess of course, based on meetings at IETF and such.

Note that it's a little tricky to implement variable length mask 
support unless the IP forwarder is designed to support it.  Most of the
vendor's I know who are supporting OSPF have or are rewriting their
forwarder code, and this is a major change in the way their routers
work, so it takes more than just OSPF itself if your forwarder doesn't
support this functionality already.

						Thanks,
						   Milo