HP 316095-B21 - StorageWorks Edge Switch 2/24 Manual page 7

Glossary
broadcast
Send a transmission to all node ports (N_Ports) on a fabric. See also broadcast frame and
multicast.
broadcast frame
Data packet, also known as a broadcast packet, whose destination address specifies all
computers on a network. See also broadcast and multicast.
buffer
Storage area for data in transit. Buffers compensate for differences in processing speeds
between devices. See also buffer-to-buffer credit
buffer-to-buffer credit
(BB_Credit) — The maximum number of frames a port can transmit without receiving a receive
ready signal from the receiving device.
bypassed port
If a port is bypassed, all serial channel signals route past the port. A device attached to the port
cannot communicate with other devices in the loop.
cascade
Linking two or more Fibre Channel switches to form a larger switch or fabric. The switched
link through fiber cables attached between one or more expansion ports (E_Ports). See also
expansion port.
call-home
Product feature that requires installation of HP Proactive Service software and enables the
HAFM server to automatically transmit system events (failure information) to aN HP customer
support center. The HP support center server accepts calls from the HAFM server, logs reported
events, and can notify one or more support center representatives.
cell
In S/390 mode, in a port address matrix, a cell is the intersection point between a horizontal port
address and a vertical port address. A selected cell is indicated by the cell cursor.
chained
Two directors or switches that are physically attached.
channel
Point-to-point link that transports data from one point to the other.
channel-attached
(1) Pertaining to direct attachment of devices by data I/O channels to a computer. (2) Pertaining
to devices attached to a control unit by cables, not telecommunication lines.
channel path
A single interface between a central processor and one or more control units along which
signals and data can be sent to perform I/O requests.
Directors and Edge Switches Glossary 7