ok, I've looked at several books - just about all of them have been
discussed on this list at one time or another.....
It is amazing how many didn't address that comparison at all, but a few did.
Top-Down Network Design, pg. 294
"...for connecting devices in a LAN in a logical ring that is physically
cabled as a star......"
CCIE 350-001 Prep Kit (QUE), pg. 72
"... physical star.... logical ring..."
Then something interesting pops up:
Cisco Press CIT, pg. 46
words to the effect that: IBM specified a star topology but the IEEE 802.5
does not specify.
Which seems to be word for word from this Cisco page:
http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/tokenrng.htm
so maybe Lou was describing IBM's original implementation (I haven't read
that white paper) but then again the "bus" is part of 802.4 not 802.5......
On an exam I would go with "logical ring/physical star"
Kevin Wigle
----- Original Message -----
From: "Bradley J. Wilson" <[EMAIL PROTECTED]>
To: "cisco" <[EMAIL PROTECTED]>
Sent: Sunday, 25 February, 2001 15:20
Subject: Re: Lou Rossi's Token Ring paper
> I'm with you, Phil. Lou, if you're out there...any comments?
>
>
> ----- Original Message -----
> From: Phil Barker
> To: Bradley J. Wilson ; cisco
> Sent: Sunday, February 25, 2001 3:23 PM
> Subject: Re: Lou Rossi's Token Ring paper
>
>
> I favour a physical star (Hub/Spoke) and a logical
> ring.
>
> Phil.
>
> --- "Bradley J. Wilson" <[EMAIL PROTECTED]>
> wrote: > I'm sitting here reading Lou Rossi's Token
> Ring
> > paper, and right off the bat
> > I have a question:
> >
> > He says that token ring is "a physical ring and a
> > logical bus" - but isn't
> > this backward? Isn't it a physical bus and a
> > logical ring? We're not
> > physically connecting stations together in a ring -
> > they're all plugged into
> > a MAU and the "ring" is a logical entity inside the
> > MAU, isn't it?
> >
> > Thanks in advance,
> >
> > BJ
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