connects to the PCI bus of the processor. Not visible within
the processor’s memory space.
con
fi
guration
The way a system is set up. May refer to hardware or software:
•
Hardware: The number, type, and arrangement of
components that make up a system or network.
•
Software: The set of parameters that guide switch operation.
May include general system parameters, IP address
information, domain ID, and other information. Modi
fi
able
by any login with administrative privileges. May also refer
to a set of zones.
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
fi
eld, and CRC all consist of data words.
de
fi
ned zone con-
fi
guration
The set of all zone objects de
fi
ned in the fabric. May
include multiple zone con
fi
gurations.
See also
zone
,
zone
con
fi
guration
.
directory service
See
SNS
.
DLS
Dynamic load sharing. Dynamic distribution of traf
fi
c over
available paths. Allows for recomputing of routes when an
Fx_Port or E_Port changes status.
domain ID
Unique identi
fi
er 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 between 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 de
fi
ned 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.
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.
EIA rack
A storage rack that meets the standards set by the Electronics
Industry Association (EIA).
78
Glossary
