20 Jan
2012
20 Jan
'12
3:25 p.m.
From: Al Kossow
Sent: Friday, January 20, 2012 8:32 AM
On 1/19/12 5:01 PM, Michael Thompson wrote:
> I have a PDF file of a 1982 Sun manual titled SUN
3MBit Ethernet Board.
>
Are there any differences with what I have on
bitsavers?
> I think that the Ethernet board in my Sun 2/120 is
jumperable 3MBit/10MBit.
There were two different boards. They used 3Com for
10mbit and the
Stanford design for 3. Very few people deployed 3mbit Ethernet. The
main use by the time of the Sun Microsystems workstation was to be
able to print at CMU, Stanford and MIT using the Xerox Dover laser
printers from the Xerox Educational grant of Altos and Dovers to those
universities.
The entire Stanford backbone was 3Mbit when I got there in 1984, and
there were TOPS-20 applications for telnet, FTP, SMTP, print services,
and several other services I'm not remembering right at the moment.
I installed a 10MBit interface into one of our DEC-20s at LOTS with
advice from Len Bosack (still at SCORE at the time).
PUP (PARC Universal Packets, the 3Mbit layer 2/3) was extended to 10Mbit
at Stanford and used for several years in addition to TCP/IP, mostly at
LOTS because the kiddies weren't allowed on the Internet until c. 1988.
Rich Alderson
Vintage Computing Sr. Systems Engineer
Vulcan, Inc.
505 5th Avenue S, Suite 900
Seattle, WA 98104
mailto:RichA at vulcan.com
mailto:RichA at LivingComputerMuseum.org
http://www.LivingComputerMuseum.org/