At a surprisingly early date—1983—work started on what was, at that time, a supernetwork. A Fibre Distributed Data Interface (FDDI) network operates at 100Mbps.
The job of designing FDDI was undertaken by the NSI X3T9.5 task group. Components of the FDDI architecture were described in a series of standards documents whose release was spread across a period of years lasting into the early 1990s.
FDDI was designed with an eye on Token Ring. It has a ring topology, and, like Token Ring, a FDDI ring usually is built around a core ring of concentrators. The FDDI information transfer protocol is closely based on the Token Ring information transfer protocol.
However, the job of physically setting up an FDDI LAN is ...