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From: rpw3@rigden.wpd.sgi.com (Rob Warnock)
Newsgroups: comp.dcom.lans,comp.protocols.tcp-ip
Subject: Re: Token Ring frame sizes?  (FDDI also)
Keywords: FDDI, Token Ring, Frames
Message-ID: <67125@sgi.sgi.com>
Date: 17 Aug 90 05:31:03 GMT
References: <38470004@hpindwa.HP.COM> <1990Aug15.213146.2836@ibmpa> <67003@sgi.sgi.com> <1379@cuckoo.nsc.com>
Sender: rpw3@rigden.wpd.sgi.com
Reply-To: rpw3@sgi.com (Rob Warnock)
Distribution: na, ba
Organization: Silicon Graphics, Inc., Mountain View, CA
Lines: 15

In article <1379@cuckoo.nsc.com> my@cuckoo.UUCP (Michael Yip) writes:
+---------------
| PS: So Rob, can we go graceful insertion of a station into a FDDI
|     concentrator by holding the token and let the station into the ring?
+---------------

Not really. (At least I don't think so.)

Remember, you can't just "hold" the token; you have to send frames at
least every L_Max (3.5us), in order to reset other stations' TVX timers.
(Of course, you can send properly formatted "void" frames, but then,
why waste ring bandwidth? ;-}  )


-Rob