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- Newsgroups: comp.dcom.lans.ethernet
- Path: sparky!uunet!caen!destroyer!news.iastate.edu!john
- From: john@iastate.edu (John Hascall)
- Subject: Re: Early and Late Collision
- Message-ID: <1992Jul30.152045.22239@news.iastate.edu>
- Sender: news@news.iastate.edu (USENET News System)
- Organization: Iowa State University, Ames, IA
- References: <Bs5t9D.4yo@zoo.toronto.edu> <1992Jul30.003641.22901@news.iastate.edu> <1992Jul30.144127.17781@ncar.ucar.edu>
- Date: Thu, 30 Jul 1992 15:20:45 GMT
- Lines: 35
-
- hyder@mrbean.scd.ucar.edu (Paul Hyder) writes:
- }>>henry@zoo.toronto.edu (Henry Spencer) writes:
- }>>}A late collision is one occurring after consensus should have been achieved.
- }>>}It means something is badly wrong somewhere -- either a misconfigured
- }>> ~~~~~~~~~~~~~
- }>>}network or a malfunctioning node.
- }>>
- }>> Most likely a segment longer than the longest allowed.
-
- }I just can't let this one pass. In my experience single segment length
- }is rarely the cause of late collisions. It is too easy to find and
- }fix. ;{) In recent years the ones I've seen have included bad
- }transceivers, bad repeaters, too many repeaters, and multiport
- }transceivers three deep. Henry's "misconfigured" is closer to most
- }reality.
-
- Maybe our problem is that everyone here at the `Iowa State University of
- Science and Technology' thinks they are a magically a network engineer. ;-)
- Also the Telecomm office charges $100 hookup and $14/month for an ethernet
- connection, so everyone wants to save a buck by just daisy chaining off
- the nearest machine (sometimes not so near!). I've seen thinwire out a
- window, down a floor, along the wall a few hundred feet, back in a window,
- to a lab full of machines. I've seen a lab of MAC's wired with nearly a
- whole spool of thinwire hanging off one of our workstations, "In case we
- want to move them around some". I've seen,... (*sigh*)
-
- I've not seen those other things (too many repeaters, too many xcvrs),
- probably 'cause those things cost money! ;-)
-
- John
- --
- John Hascall ``Live with it pink-boy!''
- Project Vincent
- Iowa State University Computation Center john@iastate.edu
- Ames, IA 50011 515/294-9551 [fax -1717]
-