Stan Barr <
pla...@dsl.pipex.com> writes:
> I got myself into an argument with a newby today, he seemed to think the
> internet started in about 1995* and he didn't believe I'd been using it
> for around 20 years!
> This prompted a question, what's the oldest computer still active on
> the internet? I can only go back to 1989 but ISTR someone here runs an
> old 286. I have a vague memory of someone with an IBM mainframe from
> the sixties who has it hitched up - anyone any ideas?
"great" switch over from IMPs/host-protocol to tcp/ip was 1jan1983.
RFC 801 NCP/TCP(/IP) transition plan 1Nov81:
http://tools.ietf.org/html/rfc801.txt
tcp/ip is the technology basis for the modern internet, NSFNET backbone
was the operational basis for the modern internet and CIX was the
business basis for the modern internet.
Misc. old email related to NSFNET backbone
http://www.garlic.com/~lynn/lhwemail.html#nsfnet
In IMPs/host-protocol, the IMPs were the network nodes and typically one
or more hosts/mainframes connected to IMPs. At time of the switch-over,
there supposedly were approx. 100 IMPs (network nodes) and possibly 250
or so host/mainframes.
RFC 1000
http://tools.ietf.org/html/rfc1000.txt
from above:
The procurement of the ARPANET was initiated in the summer of 1968 --
Remember Vietnam, flower children, etc? There had been prior
experiments at various ARPA sites to link together computer systems, but
this was the first version to explore packet-switching on a grand scale.
("ARPA" didn't become "DARPA" until 1972.) Unlike most of the ARPA/IPTO
procurements of the day, this was a competitive procurement. The
contract called for four IMPs to be delivered to UCLA, SRI, UCSB and The
University of Utah. These sites were running a Sigma 7 with the SEX
operating system, an SDS 940 with the Genie operating system, an IBM
360/75 with OS/MVT (or perhaps OS/MFT), and a DEC PDP-10 with the Tenex
operating system. Options existed for additional nodes if the first
experiments were successful. BBN won the procurement in December 1968,
but that gets ahead of this story.
... snip ...
RFC 240 Site Status (& list of hosts) 27Sep71:
http://tools.ietf.org/html/rfc240.txt
The above mentions Joel Winnet getting host protocol up on cp67 (ran on
360/67, precusor to vm370) at lincoln labs.
IBM mainframe tcp/ip product was done about the time of the NSFNET
backbone (although some sites had implemented their own mainframe tcp/ip
support earlier) ... it was written in pascal/vs for vm370 ... a kludged
up version was later made available on MVS by implementing simulation
for some vm370 functions. The original version had some performance and
thruput issues. I did the changes for supporting RFC1044 and in some
tuning tests at Cray Research (between cray and 4341-clone) got possibly
500 times improvement (in instructions executed per bytes transferred)
running at 4341-clone channel media speed. misc. past posts mentioning
doing rfc 1044 support
http://www.garlic.com/~lynn/subnetwork.html#1044
not real machines ... but various players have old mainframe system
software running under hercules
http://www.hercules-390.org/
http://www.ibiblio.org/jmaynard/
as aside ... the internal network
http://www.garlic.com/~lynn/subnetwork.html#internalnet
was larger than the arpanet/internet from just about the beginning until
possibly late-85 or early-86 ... originally implemented at the science
center on cp67
http://www.garlic.com/~lynn/subtopic.html#545tech
--
virtualization experience starting Jan1968, online at home since Mar1970