EMC Connectrix B Series Hardware Reference Manual page 94

Glossary
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 and Fx_Port.
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, any optional headers,
the data payload, a cyclic redundancy check (CRC), and an end-of-
frame delimiter. There are two types of frames: link control frames
(transmission acknowledgements, etc.) 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 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 on site.
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. A 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
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EMC Connectrix B Series DS-8B3 and DS-16B3 Hardware Reference Manual