Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!samsung!uunet!mcsun!ukc!dcl-cs!aber-cs!athene!pcg From: pcg@aber.ac.uk (Piercarlo Grandi) Newsgroups: comp.protocols.tcp-ip Subject: Re: IP and Coloured Book Software in the UK Message-ID: Date: 20 Jun 91 15:04:21 GMT References: <23676@shlump.lkg.dec.com> Sender: aro@aber-cs.UUCP Organization: Coleg Prifysgol Cymru Lines: 22 In-reply-to: goldstein@delni.enet.dec.com's message of 19 Jun 91 20:49:21 GMT On 19 Jun 91 20:49:21 GMT, goldstein@delni.enet.dec.com (Fred R. Goldstein) said: goldstein> While TCP/IP was being developed in the '70s and had some lab goldstein> implementations, the ARPAnet itself was running NCP for quite goldstein> a while, until they were ready to switch everything over. I goldstein> recall that one day (well, probably a long weekend) it goldstein> happened, and NCP was No More. goldstein> Anybody remember the date? Not so suddendly. Comer says that TCP/IP introduced to ARPAnet around 1980, and that gradually sites started dropping NCP based services and using TCP/IP, until in 1983 nearlly all sites had converted. I guess that if you really wanted a cutoff date it would be hard to say; probably one could say it was when more than say 80% (but any percentage greater than 50% would probably do) of ARPAnet backbone traffic had become IP based. Somebody should have such statistics around... -- Piercarlo Grandi | ARPA: pcg%uk.ac.aber@nsfnet-relay.ac.uk Dept of CS, UCW Aberystwyth | UUCP: ...!mcsun!ukc!aber-cs!pcg Penglais, Aberystwyth SY23 3BZ, UK | INET: pcg@aber.ac.uk