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Installation Guide QLogic intelligent Storage Router (iSR)
6200 Series
Glossary-4 ISR651101-00 J
FL_Port
Fabric loop port. In a Fibre Channel, the
fabric switch is capable of Fibre Channel
arbitrated loop operations and is
connected to one or more NL_Ports by a
Fibre Channel Arbitrated Loop. An
FL_Port becomes a shared entry point for
public NL_Port devices to a Fibre Channel
fabric. FL_Ports are intermediate ports in
virtual point-to-point links between end
ports that do not reside on the same loop,
for example NL_Port to FL_Port to F_Port
to N_Port through a single Fibre Channel
fabric switch.
Flash
Non-volatile memory where the boot code
is saved. At times, Flash and boot code
are used interchangeably.
frame
Data unit consisting of a start-of-frame
(SOF) delimiter, header, data payload,
CRC, and an end-of-frame (EOF) delim-
iter.
FRU
Field replaceable unit. Component that
can be replaced in the field upon failure.
G_Port
Generic port. A port that can operate as
either an E_Port or an F_Port. A G_Port
can determine operating mode at switch
port initialization, F_Port when an N_Port
attachment is determined, E_Port when an
E_Port attachment is determined. See
E_Port, F_Port, FL_Port, L_Port, N_Port,
NL_Port.
GBIC
Gigabit interface converter. Removable
transceiver module that permits Fibre
Channel and Ethernet physical layer trans-
port.
Gbps
Gigabits per second. A measure of data
transfer rates.
gigabit interface converter
See GBIC.
HA
High availability. HA refers to a system or
device that operates continuously for a
long length of time.
Host Bus Adapter
See adapter.
heartbeat LED
A chassis LED that indicates the router
status.
high availability
See HA.
hot replaceable
Also known as hot swappable, this means
you can add new devices or remove
existing ones when the system is running.
IANA
Internet Assigned Numbers Authority
(IANA) is responsible for the global coordi-
nation of the DNS Root, IP addressing,
and other Internet protocol resources.
initiator
System component, such as a network
interface card, that originates an I/O
operation.
ioctl
Input/output control. A system call in
UNIX
®
/Linux systems that allows an appli-
cation to control or communicate with a
device driver outside usual read/write
operations.