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 InFibre Channel protocol, a port that connectsa 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.