FDDI provides a 100 Mbit/s optical standard for data transmission in local area network that can extend in length up to 200 kilometers (120 mi). Although FDDI logical … See more

Designers normally constructed FDDI rings in a network topology such as a "dual ring of trees". A small number of devices, typically infrastructure devices … See more

The frame check sequence uses the same cyclic redundancy check as Token Ring and Ethernet.
The Internet Engineering Task Force defined a standard for transmission of the Internet Protocol (which would be the protocol data unit in … See more

FDDI was considered an attractive campus backbone network technology in the early to mid 1990s since existing Ethernet networks only offered 10 Mbit/s data rates and Token Ring networks only offered 4 Mbit/s or 16 Mbit/s rates. Thus it was a relatively … See more

FDDI standards included:
• ANSI X3.139-1987, Media Access Control (MAC) — also ISO 9314-2
• ANSI X3.148-1988, Physical Layer Protocol (PHY) — also ISO 9314-1
• ANSI X3.166-1989, Physical Medium Dependent … See more