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59229-05 A Glossary-1
Glossary
Active Zone Set
The zone set that defines the current
zoning for the fabric.
Active Firmware
The firmware image on the switch that is in
use.
Activity LED
A port LED that indicates when frames are
entering or leaving the port.
Administrative State
State that determines the operating state
of the port, I/O blade, or switch. The
configured administrative state is stored in
the switch configuration. The configured
administrative state can be temporarily
overridden using the command line inter-
face.
Alarm
A message generated by the switch that
specifically requests attention. Alarms are
generated by several switch processes.
Some alarms can be configured.
Alias
A named set of ports or devices. An alias
is not a zone, and can not have a zone or
another alias as a member.
AL_PA
Arbitrated Loop Physical Address
Arbitrated Loop
A Fibre Channel topology where ports use
arbitration to establish a point-to-point
circuit.
Arbitrated Loop Physical Address (AL_PA)
A unique one-byte value assigned during
loop initialization to each NL_Port on a
loop.
ASIC
Application Specific Integrated Circuit
BootP
A type of network server.
Buffer Credit
A measure of port buffer capacity equal to
one frame.
Challenge-Handshake Authentication
Protocol
An authentication protocol by which a
device is challenged to verify its identity
before being allowed to log in to a switch.
Chassis Hop
A measure of fabric latency represented
by the ISL that any frame crosses when
travelling from one switch to another. A
frame that travels from one switch to
another over an ISL experiences one
chassis hop.