Service manual

Glossary
g-3
Glossary
BB_Credit See buffer-to-buffer credit.
beaconing The use of light-emitting diodes on ports, port cards, FRUs, directors,
and switches to aid in the fault-isolation process. When enabled,
beaconingcausesamberLEDstoflash.
BER See bit error rate.
bidirectional The capability to simultaneously communicate in both directions
over a single connection, with flow control. Synonymous with
full-duplex.
bit A digital 0 or 1, and abbreviated with a lower case b. Synonymous
with binary digit. Contrast with byte.
bit error rate The number of bits received incorrectly divided by the total number
of bits transmitted.
B_Port See bridge port.
bps Acronym for bits per second. Contrast with Bps.
Bps Acronym for bytes per second. Contrast with bps.
bridge port In Fibre Channel protocol,a port that connects a bridge device with a
director or switch expansion port (E_Port) to form an ISL. B_Ports
provide a subset of E_Port functionality. The McDATA ES-1000
Switch connects to directors and fabric switches through a B_Port.
See also expansion port.
broadcast In Fibre Channel protocol, to send a transmission to all device node
ports (N_Ports) attached to a fabric.
buffer-to-buffer credit The maximum number of receive buffers allocated to a transmitting
node port (N_Port) or fabric port (F_Port), and representing the
maximum number of frames transmitted by the N_Port or F_Port
without causing a buffer overrun at the receiving port. The value is
adjustable to provide different levels of buffering.
byte A binary character consisting of eight bits, and abbreviated with an
upper case B. Synonymous with octet. Contrast with bit.