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- Path: sparky!uunet!olivea!sgigate!sgi!rhyolite!vjs
- From: vjs@rhyolite.wpd.sgi.com (Vernon Schryver)
- Newsgroups: comp.dcom.lans.fddi
- Subject: Re: CDDI interoperability status
- Keywords: CDDI
- Message-ID: <ukh74e8@rhyolite.wpd.sgi.com>
- Date: 8 Jan 93 18:09:11 GMT
- References: <1993Jan8.090448.29665@klaava.Helsinki.FI>
- Organization: Silicon Graphics, Inc. Mountain View, CA
- Lines: 32
-
- In article <1993Jan8.090448.29665@klaava.Helsinki.FI>, vhalkka@klaava.Helsinki.FI (Vesa Halkka) writes:
- > Quite many vendors are selling CDDI stuff,
- > and there is a standard, but
- >
- > - what are the magic words that promise plug compatibility (ANSI.. )
- >
- > or is there some kind of interoperability matrix:
- >
- > if I buy Crescendo Sbus CDDI adapters and Interphase VME adapters,
- > and plug them to a Crescendo/Interphase/brandXYZ CDDI box..
- > what will happen ?
-
-
- The magic word "ANSI" is not a guarantee. Even two systems that have
- each passed the same "conformance tests" can fail to interoperate. If
- you cast the idea of a "network conformance test" into comparing two
- abstact machines operating on arbitrarily long input streams, you can
- see that in the general case a perfect conformance test is formally
- impossible.
-
- If you want more than potentially empty promises of compatibility, put
- appropriate words concerning the features you want and "liquidated
- damages" in your contracts and purchase orders. Get written or at
- least verbal promises from the vendors. Make the vendors do the work,
- including fixing things that don't work.
-
- For now, given that few others besides Crescendo are building CDDI
- concentrators, it seems likely that CDDI interoperability is not a
- problem.
-
-
- Vernon Schryver, vjs@sgi.com
-