home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.dcom.lans.ethernet
- Path: sparky!uunet!sci34hub!tybrin4!tybse1!swhite
- From: swhite@tybse1.uucp (William C. "Spike" White)
- Subject: Re: Is Starlan really Ethernet?
- Organization: Tybrin Corporation, Shalimar, FL
- Date: Thu, 30 Jul 1992 01:02:49 GMT
- Message-ID: <1992Jul30.010249.6381@tybse1.uucp>
- References: <92205.101555LORAX@wvnvm.wvnet.edu> <BrwKyM.67t@zoo.toronto.edu> <7520@public.BTR.COM>
- Lines: 36
-
- In article <7520@public.BTR.COM> thad@public.BTR.COM (Thaddeus P. Floryan) writes:
- >In article <BrwKyM.67t@zoo.toronto.edu> henry@zoo.toronto.edu (Henry Spencer) writes:
- >>Starlan is vaguely similar to 10BaseT, but is not in any way compatible
- >>with it.
- >
- >Is this REALLY true?
- >
- >I'm curious, because the original StarLAN was 1Mbit/S and bears the label
- >"802.3e-1988 1BASE5 StarLAN 1Mbit/S Ethernet".
- >
- >There are bridges from StarLAN to the newer StarLAN-10 (at 10Mbit/S).
- >
- >StarLAN has always been CSMA/CD, etc. and companies such as Hewlett-Packard
- >have interoperated StarLAN with "conventional" Ethernet.
- >
- >I'm not "defending" StarLAN; just would like to know in what way(s) it is
- >not compatible [since there is a dearth of info about StarLAN].
- >
- >Thad Floryan [ thad@btr.com (OR) {decwrl, mips, fernwood}!btr!thad ]
-
- I thought StarLAN was nothing but AT&T's version of the old 1BASE5
- implementation of IEEE 802.3. This was a baseband implementation of
- IEEE 802.3 that ran over unshielded twisted pair. As I recall, its main
- drawback was that it only ran at 1 Mb/sec, while the other IEEE 802.3
- implementations ran at 10Mb/sec (10BASE5, 10BASE2, 10BROAD??). And
- from what I read, it seems that 10BASET is nothing more than a 10Mb/sec
- version of 10BASET. In fact, I recently had an AT&T X-terminal
- w/ a 10BASET port, and a 10BASE2-to-10BASET convertor. However, the name
- on the pieces was "StarLAN-10", so it seems AT&T is still in the
- "Ethernet Obfuscation" business.
-
-
- --
- Spike White Tybrin Corporation, Shalimar, FL | Moderation in all things --
- swhite@afseo.eglin.af.mil | and abstinence in none!
- Disclaimer: I speak only for myself, not my employer.
-