System information

Glossary
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Glossary
L
LAN See local area network.
laser Laser is an acronym for light amplification by stimulated emission of
radiation. A device that produces a very powerful narrow beam of
coherent light of a single wavelength by simulating the emissions of
photons from atoms, molecules, or ions.
latency Amount of time elapsed between receipt of a data transmission at a
switch’s incoming fabric port (F_Port) from the originating node port
(N_Port) to retransmission of that data at the switch’s outgoing
F_Port to the destination N_Port. The amount of time it takes for data
transmission to pass through a switching device.
LCD Liquid crystal display.
LED See light-emitting diode.
LIC See licensed internal code.
licensed internal code LIC. Software provided for use on specific IBM machines and
licensed to customers under the terms of IBM’s customer agreement.
Microcode can be LIC and licensed as such (D).
light-emitting diode LED. A semiconductor chip that emits visible or infrared light when
electricity passes through it. LEDs are used on switch or director
field-replaceable units (FRUs) and the front bezel to provide visual
indications of hardware status or malfunctions.
LIN See link incident.
link Physical connection between two devices on a switched fabric. A link
consists of two conductors, one used for sending and the other for
receiving, thereby providing a duplex communication path.
link incident LIN. Interruption to link due to loss of light or other causes. See also
link incident alerts.
link incident alerts A user notification, such as a graphic symbol in the Product Manager
application Hardware View that indicates that a link incident has
occurred. See also
link incident.
LIP See loop initialization primitive.