ArcNet and the Pursuit of Multiple Topologies

From: Douglas Quebbeman <dhquebbeman_at_theestopinalgroup.com>
Date: Wed Oct 10 12:26:17 2001

> > At 10:26 AM 10/10/01 -0400, you wrote:
> > >On October 10, Iggy Drougge wrote:
> > >> >How about the original DIX Ethernet? Try a web search for Aloha.
> > >>
> > >> Was DIX really the original Ethernet? Wasn't that 10 Mbps and all?
> > >
> > > I believe the original Ethernet was 3Mbps.
> > >
> > > -Dave

> On Wed, 10 Oct 2001, Tom Uban wrote:
>
> > Hmm, looking at my copy of: "The Ethernet, A Local Area Network,
> > Data Link Layer and Physical Layer Specifications", from Digital,
> > Intel, and Xerox, September 30, 1980 -- the specification says:
> > "Data rate: 10 Million bits/sec"
>
> I don't know if it went to standard, but there definitely was 3Mbps
> ether. I have a CHANNEL-3Mbps card for an S/370 here.

You're right, Dave & Sridhar... from:

        http://www.baylor.edu/~Sharon_P_Johnson/etg/ethernethistory.htm

        1972-The first experimental Ethernet system, Alto Aloha Network,
        was developed by Metcalfe and his Xerox PARC colleagues. It was
        designed to interconnect the Xerox Alto, a personal workstation
        with a graphical user interface, and linked Altos to one another,
        and to servers and laser printers. The data transmission rate was
        2.94 Mbps [Spurgeon].

Regards,
-doug q
Received on Wed Oct 10 2001 - 12:26:17 BST

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