HP StorageWorks XPath OS 7.4.X Command Reference Guide (AA-RVHCC-TE, September 2005)

XPath OS 7.4.x command reference guide 289
firmware The basic operating system provided with the hardware.
FL_Port Fabric loop port. A port that is able to transmit under fabric protocol and also has arbitrated
loop capabilities. Can be used to connect an NL_Port to a switch. See also F_Port, Fx_Port.
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.
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.
FPGA Field-programmable gate array. An FPD that allows high logic capacity.
fractional
bandwidth
The partial use of a link to send data back and forth, with a maximum of 254 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 (CRC), and
end-of-frame delimiter. There are two types of frames: link control frames (transmission
acknowledgements and so forth) and data frames.
frame relay A protocol that uses logical channels, as used in X.25. Provides very little error-checking
ability. Discards frames that arrive with errors. Allows a certain level of bandwidth between
two locations [known as a committed information rate (CIR)] to be guaranteed by the service
provider. If CIR is exceeded for short periods (known as bursts), the network accommodates
the extra data, if spare capacity is available. Frame relay is therefore known as bandwidth on
demand.
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.
FSPF Fabric shortest path first. The routing protocol for Fibre Channel switches.
FSS Fabric OS state synchronization. The FSS service is related to high availability (HA). The
primary function of FSS is to deliver state update messages from active components to their
peer standby components. FSS determines if fabric elements are synchronized (and thus FSS
compliant).
FTP File Transfer Protocol.
FTS Fiber Transport Services.
full duplex A mode of communication that allows the same port to simultaneously transmit and receive
frames. See also half duplex.
full fabric The software license that allows multiple E_Ports on a switch, making it possible to create
multiple ISL links.
full fabric citizenship A loop device that has an entry in the Simple Name Server.
Fx_Port A fabric port that can operate as either an F_Port or FL_Port. See also F_Port, FL_Port.
G_Port Generic port. A port that can operate as either an E_Port or an F_Port. A port is defined as a
G_Port when it is not yet connected or has not yet assumed a specific function in the fabric.
gateway Hardware that connects incompatible networks by providing translation for both hardware
and software. For example, an ATM gateway can be used to connect a Fibre Channel link to
an ATM connection.
GBIC Gigabit interface converter. A removable serial transceiver module that allows gigabaud
physical-level transport for Fibre Channel and Gigabit Ethernet.
Gb/s Gigabits per second (1,062,500,000 bits/second).
GB/s Gigabytes per second (1,062,500,000 bytes/second).