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[ih] Why did congestion happen at all? Re: why did CC happen at all?

Dave Crocker wrote:
>> The ARPANET was never intended as a network for doing research on
>> networks.  It was intended as a production network to facilitate other
>> research.  BBN was very limited in how much experimentation was possible
>> and in what it could try.
> So they put the first IMP into UCLA, where the Network Measurement
> Center was -- Kleinrock, and all that -- on a whim?
> My understanding is that the primary goal was experimentation, but in
> the form of monitoring use and trying different algorithms, rather than
> by conducting artificial traffic exercises.  One might think of this as
> networking as a very different kind of social experiment than we think
> of today...

My understanding was that the primary goal was reducing the cost of 
researcher access to unique computers spread across academia - i.e., 
cutting the cost of travel dollars and leased lines.

Dave Walden posted links to the original ARPA RFP and BBN's proposal - 
interesting reading (and historical!) - at:

The proposal did have a section on experimentation, but it was only 
about 2 pages long.

> My other understanding is that the extent of the direct benefit to users
> wasn't quite anticipated, which made it increasingly difficult to make
> changes to the net that could bring it down.  So it was a few years
> before they had to start explicitly scheduling time slots for experiments.

I got to BBN a few years later, but my sense is that what was really 
unanticipated was the amount of operational use, by military types, 
which led pretty directly to the DDN.

Miles Fidelman

In theory, there is no difference between theory and practice.
In practice, there is.   .... Yogi Berra