- Hewlett-Packard SAN Switch Installation Guide

CRC Cyclic redundancy check. A check for transmission errors that
is included in every data frame.
defined zone con-
figuration
The set of all zone objects defined in the fabric. May
includemultiplezoneconfigurations. See also zone, zone
configuration.
directory service See SNS.
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 used in routing frames for all switches in a
fabric. Usually assigned by the principal switch, but can be
assigned manually. The domain ID for an HP switch can be any
integer b etween 1 and 239. The default domain ID is usually 1.
E_D_TOV Error-detect time-out value. The minimum 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 t ype of switch port that can be connected
to an E_Port on another switch to create an ISL. See also ISL
trunking, U_Port.
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
Class 2 services to manage the exchange of frames across the
fabric between source and destination.
enabled zone con-
figuration
The currently enabled configuration of zones. Only one
configuration can be enabled at a time. See also zone, zone
configuration.
end-to-end flow
control
A facility that governs flow of class 1 and class 2 frames
between N _Por ts.
error WithrespecttoFC,amissingorcorruptedframe,time-out,loss
of synchronization, or loss of signal (link error).
exchange The highest-lev el 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.
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Glossary