glen herrmannsfeldt <g...@ugcs.caltech.edu> writes: > As I understand it, much of the funding needed to turn the > ARPAnet into what we now call the Internet came through Al. > > For a long time, many of the longer links were 56000 bits/second. > (That is, the main links between large sites!) > > I remember making SET HOST (remote login through DECnet) and > waiting tens of seconds for the echo of a character typed. > > Linking many government funded labs with higher speed lines > was pretty important toward the Internet of today.
re: http://www.garlic.com/~lynn/2012j.html#83 Gordon Crovitz: Who Really Invented the Internet? http://www.garlic.com/~lynn/2012j.html#84 Gordon Crovitz: Who Really Invented the Internet? I was going to get something like $20M from NSFNET for NSFNET backbone ... we already had T1 and faster links running internally. Then the budget got cut and plans for the NSFNET backbone got re-orged ... some amount of what went on in this old email http://www.garlic.com/~lynn/lhwemail.html#nsfnet a NSFNET backbone T1 RFP was released (calling for T1 links) and internal politics prevented us from bidding. The director of NSF wrote the company a letter, copying the CEO, trying to help ... but that just made the internal politics worse (as did comments about what we already had running was at least five yrs ahead of all bid submissions). The final winning bid was only able to put in 440kbit/sec links (not T1) ... and then somewhat to try and meet the letter of the RFP put in T1 trunks with telco multiplexors (running multiple 440kbit/sec links over T1 trunks) ... I would make derogatory references that they might be able to call it a T5 network since some of the T1 trunks may have, in turned, be multiplexed over T5 trunks. The communication group was also generating a lot of mis-information about SNA applicable to NSFNET T1 backbone ... even tho SNA products only had support for 56kbit/sec link. somebody collected a bunch of communication group mis-information and redistributed ... small part reproduced here http://www.garlic.com/~lynn/2006w.html#email870109 some past posts mentioning having T1 and faster links already running: http://www.garlic.com/~lynn/subnetwork.html#hsdt We were having some custom hardware built on the other side of the pacific and friday before I was to make a visit, the communication group sent out an announcement for a new "high-speed" discussion group with the following definitions: low-speed: <9.6kbits medium-speed: 19.2kbits high-speed : 56kbits very high-speed: 1.5mbits Monday morning in conference room on the other side of the pacific was the following definitions: low-speed: <20mbits medium-speed: 100mbits high-speed: 200-300mbits very high-speed: >600mbits it was rather interesting since the communication group was claiming customers didn't need/want T1 until sometime in the 90s. They had done study of customer 37x5 "fat pipes" (multiple parallel 56kbit links simulating faster single link. They plotted number of customer 2-link, 3-link, 4-link, etc and found it dropped to zero by six-links (aka six parallel 56kbit links) ... justification for communication group not having products supporting faster than 56kbit/sec. What they failed to mention was most telcos tariffed single T1 link at about the same as five or six 56kbit links. Customers wanting more than about 200kbits just got real T1 link and switched to support from some other vendor (trivial survey turned up 200 such T1 customers at time when communication group was claiming no customer wanted T1 for another 6-8yrs). later the communication group cobbled together 3737 kludge, sort of able to do T1 ... it would simulate a local channel-to-channel and would immediately do ACKs to host vtam ... as if traffic had already reached destination ... spoofing the host vtam trying to reach T1 thruput. a couple recent posts with old email from 1988 discussing 3737: http://www.garlic.com/~lynn/2011g.html#75 We list every company in the world that has a mainframe computer http://www.garlic.com/~lynn/2011g.html#77 Is the magic and romance killed by Windows (and Linux)? -- virtualization experience starting Jan1968, online at home since Mar1970 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
