The FDDI is an emerging Standard fiber optic LAN technology suitable for backbone and high-performance workstation applications. This report describes the FDDI standards and the media that FDDI uses, and provides information about wiring for and effectively configuring FDDI LANs. Also describes the relationship of FDDI to the Governmet Open Systems Interconnection Profile (GOSIP) and discusses connecting FDDI to other networks. 40 figures and 10 tables...