HP StorageWorks Fabric OS 5.X Master Glossary (AA-RW7NA-TE, September 2005)

domain controller An embedded port that communicates with and gets updates from the
embedded ports on other switches. The well-known address is fffcdd,where
dd = domain number) .
See well-known address.
domain ID A unique identifier for e ach switch in a fabric. It is used in routing frames.
Usually assigned by the principal switch but can be assigned manually. The
domain ID for an HP StorageWorks switch can be any integer from 1 through
239 .
DTE Data terminal equipment. A single piece of equipment or a n interconnected
subsystem of multiple pieces of equipment that perform all the required functions
necessary to permit users to communicate. It usually refers to a terminal.
DWDM Dense wave division multiplexing. A set of technologies that allows up to 80
separate channels of data to be carried over a single fibre optical cable using
different wavelengths for each channel.
See WDM.
ECCN Export classification control number. A government classification of encryption
schemes. For example, SSH is in the high-encryption category (num ber 5x02),
and therefore, has certain restrictions regarding transfer of encrypted data.
edge fabric A Fibre Channel fabric connected to an MP Router via an EX_Port (where hosts
and storage are a ttached in a meta-SAN).
edge switch (1) A network switch used to convert L AN frames (Ethernet, and so forth) to
asynchronous transfer mode (ATM) cells a nd vice versa. It is typically a d evice
with one ATM port and multiple LAN ports.
(2) A Fibre Channel switch used to provide user ports for servers and storage.
E_D_TOV Error-detect timeout 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 is declared.
See also R_A_TOV,andRR_TOV.
EE_Credit End-to-end credit. The number of receive buffers allocated by a recipient por t
to an originating por t. Used by the Class 1 and 2 services to manag e frame
exchange across the fabric, between source and destination.
See also BB_Credit,andend-to-end flow control.
effectivezonecon-
figuration
Asubsetofthedefined zone configuration, containing only the zone
configuration object that is currently enabled. Only one configuration can be
enabled at a time, but since multiple configurations can be defined in the
database, a new configuration can be easily enabled.
See also defined zone configuration,andzone configuration.
EIA rac k A stora ge rack that meets the standards set by the Ele ctronics Industry
Association (EIA).
ELP Exchange link parameters. Used as a fabric login to exchange service
parameters with another E_Port; it also helps to establish a multi-functional port’s
operational mode.
ELS Extended link service. ELSs are sent to the destination N_Port to perform a
requested function or service. A Fibre Channel standard, which is also ca lled
Fibre Channel Physical (FC_PH) ELS.
EM Environmental monitor. A device that monitors FRUs and reports failures.
embedded port A domain controller that communicates with and gets updates from the
embedded ports on other switches. The well-known address is fffcdd,where
dd = domain number.
Fabric OS 5.x master glossary
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