McDATA 3032, 3232 C

g-8 McDATA® Sphereon 3032 and 3232 Fabric Switches Installation and Service Manual

Glossary

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.

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.

byte Abbreviated as B. A byte generally equals eight bits, although a byte

can equal from four to ten bits. A byte can also be called an octet See

also octet.

C

call-home Product feature which enables the EFC Server to automatically con-

tact 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.

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.

CBY Channel operations running in byte mode. This occurs when a chan-

nel is attached to a converter and specifies the I/O operation mode

for the channel path under the I/O configuration program (IOCP)

channel path identifier (CHPID) statement ‘Type’ parameter. Contrast

with CVC.

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 (1) A system element that controls one channel path, and whose

mode of operation depends on the type of hardware attached. Each

channel controls an I/O interface between the channel control ele-

ment and the attached control units (D). (2) Point-to-point link that