(FOIRL) An older standard of fiber optic guides used for carrying 10 MBps Ethernet. The maximum length of a segmeNT is 1 km. A FOIRL multiport repeater and transceivers are necessary to carry the signal to multiple devices. The more receNT version of Ethernet over fiber optic cables is 10baseFL with a maximum segmeNT length of 2 km. (1998-06-28)