HP StorageWorks SAN Director Installation Guide (A7393-90009, May 2007)

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CRC Cyclic redundancy check. A check for transmission errors that is included in every
data frame.
data word A type of transmission word that occurs within frames. The frame header, data field,
and CRC all consist of data words.
defined zone
configuration
The set of all zone objects defined in the fabric. May include multiple zone
configurations.
DLS Dynamic load sharing. Dynamic distribution of traffic over available paths. Allows
for recomputing of routes when an Fx_Port or E_Port changes status.
Domain ID Unique identifier for all switches in a fabric, used in routing frames. Usually
automatically assigned by the principal switch, but can be assigned manually. The
Domain ID for an HP switch can be any integer between 1 and 239. Generally, the
default Domain ID is 1.
E_D_TOV Error detect time-out value. The minimum amount of time a target waits for a
sequence to complete before initiating recovery. Can also be defined as the
maximum time allowed for a round-trip transmission before an error condition is
declared.
E_Port Expansion port. A type of switch port that can be connected to an E_Port on
another switch to create an ISL.
EE_Credit End-to-end credit. The number of receive buffers allocated by a recipient port to an
originating port. Used by Class 1 and 2 services to manage the exchange of frames
across the fabric between source and destination.
enabled zone
configuration
The currently enabled configuration of zones. Only one configuration can be
enabled at a time.
end-to-end flow
control
Governs flow of class 1 and 2 frames between N_Ports.
error As applies to Fibre Channel, a missing or corrupted frame, time-out, loss of
synchronization, or loss of signal (link errors).
exchange The highest level Fibre Channel mechanism used for communication between
N_Ports. Composed of one or more related sequences, and can work in either 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.
fabric A Fibre Channel network containing two or more switches in addition to hosts and
devices. May also be referred to as a switched fabric.