Protocol FDDI

•Fiber Distributed Data Interface - a network protocol that is used primarily to interconnect two or more local area networks, often over large distances.
•access method involves token-passing.
•uses a dual ring physical topology. Transmission normally occurs on one of the rings; if a break occurs, the system keeps information moving by automatically using portions of the second ring to create a new complete ring.
•A major advantage of FDDI is speed. It operates over fiber optic cable at 100 Mbps.