And then, on the other end of the spectrum, you have all of those
funky
network 'things' (hardware and software)that
were in vogue during the
dawn of the office LAN: 3Com 3+Share and friends, 3Com EtherSeries,
early
NetWare and their peculiar fileservers, ArcNet,
BrokenRing, etc., etc.
etc.
Not a TCP/IP packet to be found anywhere here (at
least, not until
much
later...).
And, there was the whole world pre-IP serial-line and dial-up networking
with stuff like UUCP, and various BBS networking technologies like
FidoNET, etc.
This area of networking by itself would require significant resource to
document.
-Rick B.