rpw3@fortune.UUCP (04/24/84)
#R:astrovax:-30000:fortune:5900015:000:1023
fortune!rpw3 Apr 23 19:19:00 1984
I did not mean to scare anybody with talk about Ethernet revisions,
quite the opposite. Except in the deep dark corners of max-cable-length
and max-stations, where the version 1.0 stuff wouldn't have worked anyway,
rev 1.0 and 2.0 are fully compatible ON THE CABLE (**), and indeed are
compatible with IEEE 802.3, when that is configured with the set of options
which effectively selects "Ethernet" (subject to the "length" vs. "type"
field discussed previously).
(**) Because of the collision-check feature of 2.0, you may have trouble
getting 1.0 controllers to work with 2.0 transceivers, and vice-versa,
but manufacturers of both will gladly tell you which they are, and many
OEMs make both (pick your part number). (Some are even switch selectable!)
Just ask your controller vendor which version is supplied, and buy
transceivers to match.
Rob Warnock
UUCP: {ihnp4,ucbvax!amd70,hpda,harpo,sri-unix,allegra}!fortune!rpw3
DDD: (415)595-8444
USPS: Fortune Systems Corp, 101 Twin Dolphin Drive, Redwood City, CA 94065