Library /sys$common/syshlp/nclhelp.hlb Entity Hierarchy, FDDI  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    The FDDI module implements one of multiple possible Link level/-
    Network level modules in the OSI layered architecture model.

    DNA 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.

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