Cisco MDS 8/12c User Manual page 46

E_Port Expansion port. A type of switch port that can be connected to an E_Port on another
switch to create an ISL. See also U_Port.
End-to-end credit. The number of receive buffers allocated by a recipient port to an
EE_Credit
originating port. Used by Class 1 and Class 2 services to manage the exchange of
frames across the fabric between source and destination.
EIA rack An equipment storage rack that meets the standards set by the EIA (Electronics Industry
Association).
enabled zone The currently enabled configuration of zones. Only one configuration can be enabled
configuration at a time. See also zone,
end-to-end flow A facility that governs flow of class 1 and class 2 frames between N_Ports.
control
error With respect to FC, a missing or corrupted frame, time-out, loss of synchronization, or
loss of signal (link error).
exchange The highest-level FC mechanism used for communication between N_Ports. Composed
of one or more related sequences; can work in one or both directions.
F_Port Fabric port. A port that is able to transmit under fabric protocol and interface over
links. Can be used to connect an N_Port to a switch. See also U_Port.
fabric An FC network containing two or more switches in addition to hosts and devices. May
also be called a switched fabric.
fabric name The unique identifier assigned to a fabric and communicated during login and port
discovery.
FCIA Fibre Channel Industry Association. An international organization of FC industry
professionals. Provides oversight of ANSI and industry standards.
FCP Fibre Channel Protocol. Mapping of protocols onto the FC standard protocols. For
example, SCSI FCP maps SCSI-3 onto FC.
FCS switch Fabric Configuration Server switch. One or more designated HP switches that store
and manage the configuration and security parameters for all switches in the fabric.
Fibre Channel The primary protocol for building SANs to transmit data between servers, switches,
and storage devices. Unlike IP and Ethernet, Fibre Channel is designed to support the
needs of storage devices of all types. It is a high-speed, serial, bidirectional,
topology-independent protocol, and is a highly scalable interconnection between
computers, peripherals, and networks.
fill word An IDLE or ARB ordered set that is transmitted during breaks between data frames to
keep the link active.
FLOGI 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 under fabric protocol and has
arbitrated loop capabilities. Can also be used to connect an NL_Port to a switch. See
also U_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
and data frames. See also packet.
FRU Field-replaceable unit. A component that can be replaced on site.
FS Fibre Channel Service. A service that is defined by FC standards and exists at a
well-known address. The Simple Name Server, for example, is an FC service. See also
SNS.
FSP Fibre Channel Service Protocol. The common protocol for all fabric services; it is
transparent to the fabric type or topology.
FSPF Fabric shortest path first. HP routing protocol for FC switches.
Fx_Port A fabric port that can operate as an F_Port or FL_Port.
46 Glossary
zone configuration.