[ih] Network "cutover" techniques - 1984 Old School

[Jack Haverty]

A colleague found this documentary showing how major network transitions
were performed circa 1984.   I thought it might be of historical
interest, especially in comparison to techniques used for major
transitions in the Internet.

https://www.youtube.com/watch?v=saRir95iIWk
<https://www.youtube.com/watch?v=saRir95iIWk>

It took just "a few seconds" to complete the transition - a major
improvement to the typical times of "minutes or even hours" that was the
norm.

I suspect this practice is also the origin of the term "cutover", as in
"cutover from NCP to TCP" or "cutover from IPV4 to IPV6".

/Jack