User manual

Glossary
g-3
Glossary
bidirectional In Fibre Channel, the capability to simultaneously communicate at
maximum speeds (100 Mbps) in both directions over a link.
bit error rate A comparison of the number of bits received incorrectly by a device
to the total number of bits transmitted.
blocked port Devices communicating with the port are prevented from logging
into the switch or communicating with other devices attached to the
switch. A blocked port continuously transmits the offline sequence.
bridge Device that connects and passes packets between two network
segments that use the same communications protocol.
broadcast Send a transmission to all N_Ports on a fabric.
broadcast frames Data packet, also known as a broadcast packet, whose destination
address specifies all computers on a network. See also multicast.
buffer Storage area for data in transit. Buffers compensate for differences in
processing speeds between devices.
buffer-to-buffer credit BB_Credit. (1) The maximum number of receive buffers allocated to a
transmitting node port (N_Port) or fabric port (F_Port). Credit repre-
sents the maximum number of outstanding frames that can be trans-
mitted by that N_Port or F_Port without causing a buffer overrun
condition at the receiver. (2) The maximum number of frames a port
can transmit without receiving a receive ready signal from the receiv-
ing device. BB_Credit can be adjustable to provide different levels of
compensation.
C
CHPID See channel path identifier.
call-home Product feature which enables the EFC Server to automatically dial
out to a support center and report system problems. The support
center server accepts calls from the EFC Server, logs reported events,
and can notify one or more support center representatives.
channel Point-to-point link that transports data from one point to the other.