FDDI
A set of standards designed in 80’s for MANs (ANSI X3T9.5)
- Also used as BB and LAN technologies
Limited future
- Gigabit Ethernet’s strong presence
A ring network operating at 100 Mbps over fiber cables
- Assumes a mix of 1,000 stations and 200 Km path
- With repeaters at every 2 Km
- Uses 2 counter rotating rings: primary and secondary
- Data on the primary; secondary used as backup