Fabric OS Reference Manual

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FC-PH-1, 2, 3 The Fibre Channel Physical and Signaling Interface standards.
FC-PI The Fibre Channel Physical Interface standard.
FC-PLDA The Fibre Channel Private Loop Direct Attach standard. Applies to operation
of peripheral devices on private loops.
FC-SW-2 The Fibre Channel Switch Fabric standard, second generation. Specifies
tools and algorithms for interconnection and initialization of fibre channel
switches.
Fibre channel
transport
Protocol service that supports communication between fibre channel service
providers. See also FSP.
Fill word A word transmitted to keep a fibre active. Either an idle or ARB ordered set.
FL_Port Fabric Loop Port. A port that can transmit under both fabric protocol and
loop protocol. Can be used to connect NL_Ports to a switch. See also F_Port,
Fx_Port.
FLOGI Fabric Login. Process by which a node makes a logical connection to fabric.
Used by ports to determine if fabric is present, and if so to exchange service
parameters with the fabric. See also PLOGI.
Frame Fibre channel structure used to transmit data. Consists of start-of-frame
delimiter, header, any optional headers, data payload, cyclic redundancy
check (CRC), and end-of-frame delimiter. There are two types: data frames
and link control frames. Similar to the networking concept “packet.” See also
Sequence, Data word.
FRU Field Replaceable Unit. A component that can be replaced on site.
FS Fibre Channel Service. A service that is defined by fibre channel standards
and exists at a well-known address. For example, Name Server is a fibre
channel service. See also FSP.
FSP Fibre Channel Service Protocol. The common protocol used for all fabric
services, transparent to fabric type or topology. See also FS.
FSPF Fabric Shortest Path First. Routing protocol for fibre channel switches.
Full-duplex Mode of communication that allows a port to simultaneously transmit and
receive frames. See also Half-duplex.