[ih] Question re rate of growth of the Arpanet

[Barbara Denny]

 Don't forget about port expanders in trying to determine the host count.
barbara

    On Monday, April 21, 2025 at 07:26:50 AM PDT, Steve Crocker via Internet-history <internet-history at elists.isoc.org> wrote:  
 
 Thanks for the pointer to RFC 597.

As I looked at it, an aspect I hadn't considered before came to mind.

Installation of an IMP required provisioning 50 kb/s lines to two or three
other points.  In the early days, we installed roughly a new IMP once a
month.  (The lead time for ordering 50 kb/s lines from AT&T was NINE
months.)

Once an IMP was installed, new hosts could be added to the IMP as quickly
as the site could build or obtain the host-IMP interface and write or
obtain the software for their operating system.

If anyone has the dates for each of the hosts, it would be interesting to
compare the growth of IMPs vs growth of hosts.

Steve
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