Networks and HIstory
TCP/IP has been an invention with a lot of impact.
There were interesting things done with non-packet networks that we tend to forget. In the mid 1970s, Minnesota had 2000 schools wired up to a giant Control Data timesharing systems. And the CDC Plato network was international.
AT&T was offered control of the internet (arpanet) at one point, but declined. They thought their photonic networks and city-sized token rings were much more sophisticated. And they were right, but they were wrong.
The great OSI boondoggle attempted to replace TCP/IP. After years of deliberation by international committees, they came up with TP4, a protocol so inefficient that TCP declares a timeout and closes a connection in about the time it took TP4 to exchange a data packet. The opportunity cost of OSI must have been staggering, since it delayed Europe and Japan from entering the internet for a few years.


