*Conan The Librarian
The FDDI module implements one of multiple possible Link level/Network level modules in the OSI layered architecture model. Fiber Distributed Data Interface FDDI is the basis for the second generation of network interconnect architecture for Digital. The FDDI module implements one of the multiple possible Link level/Physical level modules in the OSI layered architecture model. The FDDI Physical level includes high-speed, 125 megabaud, fiber optic links which may be many kilometers in length. The FDDI Link level provides a high bandwidth, 100 megabits per second local area network LAN, and uses the ANSI standard FDDI Token Ring. The hierarchical relationship of the entities that constitute the FDDI module: FDDI Port Station Link Phy Port The FDDI module incorporates the functions and operations defined in the ANSI FDDI Token Ring Media Access Control MAC, the ANSI FDDI Token Ring Physical Layer Protocol PHY, FDDI Physical Layer Medium Dependent PMD, Station Management SMT specifications, parts of the ISO 8802-1 IEEE 802.1 Addressing, Internetworking and Network Management, and parts of the ISO 8802-2 IEEE 802.2 Logical Link Control LLC specifications. The FDDI entity is the top-level entity in the hierarchy of entities belonging to the FDDI module.
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