Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!jgd@csd4.milw.wisc.edu
From: jgd@csd4.milw.wisc.edu (John G Dobnick,EMS E380,4142295727,)
Newsgroups: comp.dcom.lans
Subject: Re: Mfgr-Vendor Code
Message-ID: <755@csd4.milw.wisc.edu>
Date: 3 Feb 89 04:09:50 GMT
References: <1595@pbhyg.PacBell.COM>
Sender: news@csd4.milw.wisc.edu
Distribution: usa
Lines: 27

From article <1595@pbhyg.PacBell.COM>, by krs@pbhyg.PacBell.COM (Kenn Sato):
> I was watching packets on our local Ungermann-Bass broadband and noticed
> a Vendor code in the source address that was not x00DD00 (which is UB).
[ ... ]

We encountered a similar "strangeness".  A "new" Unisys 7000/40 (Sperry for 
all the "old-timers", like me) advertizes an ethernet address of
8B:D9:9B:7F:FB:9F.  The "manufacturer code" (8B:D9:9B) is not only not
in the Urbaniak list, but also does not match the *known* code for the
manufacturer of the board -- ACC.  (The ACC code should be 08:00:03.)

I understand these boards *can* have the ethernet address "loaded"
programmatically, but our Systems person tells me this is NOT being done --
whatever the board squawks as its ethernet address is what's on the board
(or in it's ROMs).

Any insight into this from you folks out there?  Personally, I think the
address ROM is scrambled, fried, or otherwise "confused".

-- 
John G Dobnick
Computing Services Division @ University of Wisconsin - Milwaukee
UUCP: <backbone>!uwvax!uwmcsd1!jgd
INTERNET: jgd@csd4.milw.wisc.edu

"Knowing how things work is the basis for appreciation,
and is thus a source of civilized delight."  -- William Safire