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Definition: FOIRL

(Fiber Optic Inter Repeater Link) An IEEE standard for fiber-optic Ethernet. FOIRL and 10BaseF are compatible, but FOIRL is an earlier standard generally used to extend a backbone beyond the 328 foot limitation of 10Base-T. FOIRL is limited to .6 miles distance per segment, whereas 10BaseF segments can extend to 1.2 miles. 10BaseF is a more comprehensive standard for complete fiber-based installations.