Fiber Distributed Data Interface

This document provides a comprehensive system-level description of the Fiber Distributed Data Interface (FDDI) 100-Mb/s timed-token ring network standard. It details Digital Equipment Corporation's implementation of these standards, focusing on key components such as concentrators, bridges, and adapters. The manual explains the dual ring of trees topology as a recommended configuration to ensure network reliability, scalability, and maintainability. It covers fundamental concepts including Physical Layer Medium Dependent (PMD) specifications, physical layer protocols (PHY), media access control (MAC) functions, and station management (SMT). Additionally, it describes network management capabilities and provides configuration guidelines for integrating FDDI devices into campus and building-wide networks using structured wiring.