[ih] the Jan 1 1983 cutover to TCP/IP on the ARPAnet

[mfidelman at meetinghouse.net (Miles Fidelman)]

Bob Braden wrote:
> Recollections from the mists of time... January 1, 1983
>
> It was actually quite exciting for those of us who had been defining 
> the protocols and building
> prototype implementations for roughly 5 years, to see TCP/IP really 
> function in production.
> At the time, we of course had no idea of its ultimate impact on the 
> world.
>
> I believe that the switchover was enforced by the ARPAnet operational 
> organization, DCA,
> disabling the primary link used by the ARPAnet host-host protocol NCP. 
> Link 1? I guess
> I could look it up.
>
On another list, Andy Malis wrote;

"I guess I count as the expert in this case, because I wrote the IMP
code that enforced the transition. It was a simple packet filter based
on packet type (NCP vs. IP), NCP packets were dropped. I also
administered a host-by-host list of hosts that had received extensions
for various reasons - the code allowed exemptions on a per-host basis."



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