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Path: utzoo!utgpu!watmath!clyde!ima!think!barmar
From: barmar@think.COM (Barry Margolin)
Newsgroups: rec.humor.d,news.misc
Subject: Re: USENET and Internet (was: Re: Yes, I can sell a jokebook via USENET.
Message-ID: <32542@think.UUCP>
Date: 2 Dec 88 22:04:04 GMT
References: <2391@looking.UUCP> <79090@sun.uucp> <1057@ncar.ucar.edu> <376@eda.com> <79319@sun.uucp> <380@eda.com> <2424@looking.UUCP>
Sender: news@think.UUCP
Reply-To: barmar@kulla.think.com.UUCP (Barry Margolin)
Organization: Thinking Machines Corporation, Cambridge MA, USA
Lines: 29

In article <2424@looking.UUCP> brad@looking.UUCP (Brad Templeton) writes:
>I think Chuq means the ARPANET - the network paid for by the DCA.
>
>The Internet includes lots of people beyond this.

Well, if we need to be that precise, then let's get it right.  What he
probably means is the Defense Data Network (DDN).  The DDN is made up
of two physical networks, Arpanet and Milnet.  Arpanet is for research
institutions doing work for DARPA, Milnet is for actual US military
installations.

The DDN came into being when we switched from NCP to TCP/IP in 1983.
Before then the entire network was called Arpanet.  The intent of the
distinction was that networking research could continue on the
Arpanet, while Milnet would be a stable network for production sites.
For example, the switch to domain style names and use of name servers
has been much faster on the Arpanet than Milnet, and a change to the
PSN (the processors that connect hosts to the two networks) software
that has been running on the Arpanet for a year is just now being run
in test mode on Milnet.  Also, the gateways between the Arpanet and
Milnet were envisioned as only passing mail through, rather than
allowing full connectivity; as far as I know, this has not yet been
done.

Barry Margolin
Thinking Machines Corp.

barmar@think.com
{uunet,harvard}!think!barmar