HP StorageWorks 2/64 - Core Switch Manual page 14

firmware Software (programs or data) that has been written onto read-only memory
devices, such as ROM, PROM, EPROM, and EEPROM.
firmware water- An HP StorageWorks switch feature that prevents an incompatible version of the
marking HP Fabric OS to be downloaded to HP StorageWorks 2 GB switches.
flash Programmable nonvolatile RAM (NVRAM) memory that maintains its contents
without power.
FLOGI Fabric login. The process by which an N_Port determines whether a fabric is
present and, if so, exchanges service parameters with it.
See also PLOGI.
FL_Port Fabric loop port. A port that is able to transmit using fabric protocol and also
has arbitrated-loop capabilities. Can be used to connect an NL_Port to a switch.
See also
FMPS Fabric management policy set.
FOTP Fiber Optic Test Procedure. Standards developed and published by the
Electronic Industries Association (EIA) under the EIA-RS-455 series of standards.
FPD Field-programmable device. Interchangeable with PLD.
See PLD.
FPGA Field-programmable gate array. An FPD that allows high logic capacity.
F_Port Fabric port. The link control facility within the Fabric that attaches to an N_Port
through a link. An F_Port is addressable by the N_Port attached to it, with a
common well-known address identifier FFFFFE. Can be used to connect an
N_Port to a switch.
See also FL_Port, Fx_Port,
fractional band- The partial use of a link to send data back and forth, with a maximum of 254
width Class 4 connections per N_Port.
frame The Fibre Channel structure used to transmit data between ports. Consists
of a start-of-frame delimiter, header, optional headers, data payload, cyclic
redundancy check, and end-of-frame delimiter. There are two types of frames:
link control frames (transmission acknowledgements and so forth) and data
frames.
See also packet.
Frame Relay A protocol that uses logical channels, as used in X.25. Provides very little
error-checking ability. Discards the frames that arrive with errors. Allows a
certain level of bandwidth between two locations (also called committed
information rate, CIR) to be guaranteed by the service provider. If the CIR is
exceeded for short periods (known as bursts), the network accommodates the
extra data if spare capacity is available. Frame Relay is also called bandwidth
on demand.
F_RJT Fabric port reject frame. A frame issued by the fabric to indicate that delivery of
a frame is being denied, perhaps because a class is not supported, there is an
invalid header, or no N_Port is available.
FRU Field replaceable unit. A component that can be replaced onsite.
FS Fibre Channel service. A service that is defined by Fibre Channel standards and
exists at a well-known address. For example, the Simple Name Server is a
Fibre Channel service.
See also FSP.
FSP Fibre Channel Service Protocol. The common protocol for all fabric services,
transparent to the fabric type or topology.
See also FS.
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Glossary
F_Port and Fx_Port.
link control facility.