Service manual

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Intrepid® 6140 Director Installation and Service Manual
Glossary
link incident The interruption of traffic on a Fibre Channel link due to loss of light
or other malfunction.
Link Incident Log A log recorded at the Element Manager application that displays a
history of Fibre Channel link incidents (with associated port
numbers) for a director or switch.
LIP sequence See loop initialization primitive sequence.
local area network A communication system that links computers in a network through
a wiring-based cable scheme. LANs connect servers, storage devices,
and printers together to allow users to communicate and share
resources. LAN devices are linked in a localized geographical area
(for example, a building or campus), and are typically user-owned
and do not run over leased lines. Contrast with metropolitan area
network, storage area network,andwide area network.
logical port address The address used to specify port connectivity parameters when a
director or switch is set to operate in S/390 mode.
logical unit number In systems network architecture, a LUN is a number assigned to each
logical partition of a storage device. Each logical partition is uniquely
identified in a SAN when the LUN combines with the WWN of the
storage device’s N_Port.
loop initialization
primitive sequence
A transmitted LIP sequence enables initialization of a Fibre Channel
arbitrated loop. An arbitrated loop must initialize prior to operation
and when configuration changes are detected. Any FL_Port with a
valid AL_PA can start loop initialization by entering the initializing
state and transmitting a LIP sequence.
LUN See logical unit number.
M
MAC address See media access control address.
maintenance port Connector on a director or switch whereby a PC running an ASCII
terminal emulator can be connected for specialized maintenance
support.
MAN See metropolitan area network.