HP Brocade 4Gb SAN Switch for HP BladeSystem p-Class User Manual
Page 244
244 Glossary
arbitration
A method of gaining orderly access to a shared-loop topology.
area number
In Fabric OS v4.0.0 and later, ports on a switch are assigned a logical area number. Port area numbers can be
viewed by use of the
switchshow
command. Area numbers define the operative port for many Fabric OS
commands; for example, area numbers can be used to define the ports within an alias or zone.
ARR
Asynchronous response router. Refers to Management Server GS_Subtype Code E4, which appears in
portlogdump
command output.
ASD
Alias server daemon. Used for managing multicast groups by supporting the create, add, remove, and destroy
functions.
ATM
Asynchronous Transfer Mode. A transport used for transmitting data over LANs or WANs that transmit fixed-length
units of data. Provides any-to-any connectivity and allows nodes to transmit simultaneously.
authentication
The process of verifying that an entity in a fabric (such as a switch) is what it claims to be. See also
switch-to-switch authentication
autocommit
A feature of the
firmwaredownload
command. Enabled by default,
autocommit
commits new firmware to both
partitions of a control processor.
autoreboot
Refers to the
-b
option of the
firmwaredownload
command. Enabled by default.
BB_Credit
Buffer-to-buffer credit. The number of frames that can be transmitted to a directly connected recipient or within an
arbitrated loop. Determined by the number of receive buffers available. See also
beacon
A tool in which all of the port LEDs on a switch are set to flash from one side of the switch to the other, to enable
identification of an individual switch in a large fabric. A switch can be set to beacon by a CLI command or through
Advanced Web Tools.
beginning running disparity
The disparity at the transmitter or receiver when the special character associated with an ordered set is encoded or
decoded. See also
.
BIST
Built-in self-test.
bit synchronization
The condition in which a receiver is delivering retimed serial data at the required bit error rate.