User manual

Glossary
g-5
Glossary
resources (ports) allow. Contrast this to the dedicated bandwidth that
is required in a Class 1 Fibre Channel Service point-to-point link.
connector See optical fiber connector.
control processor
card
Circuit card that contains the switch microprocessor. The CTP card
also initializes hardware components of the system after power-on. A
10 Mbps RJ-45 twisted pair connector is located on the CTP card to
connect to the Ethernet LAN and communicate with the EFC Server
or a specific management station.
control unit A hardware unit that controls the reading, writing, or displaying of
data at one or more input/output units.
control unit port An internal port on the CTP card that communicates with the
attached IBM FICON or similar processor channels to report error
conditions and link initialization.
CRC See cyclical redundancy check.
CTP See control processor card.
CUP See control unit port.
cyclical redundancy
check
System of error checking performed at both the sending and
receiving station using the value of a particular character generated
by a cyclic algorithm. When the values generated at each station are
identical, data integrity is confirmed.
D
DASD Direct access storage device such as a disk drive.
data directory Critical information for all managed products (including directors
and switches). Information stored here includes: all EFC Manager
configuration data (product definitions, user names, passwords, user
rights, nicknames, session options, SNMP trap recipients, e-mail
recipients, and Ethernet event notifications); all log files (EFC
manager logs and individual Product Manager logs); zoning library
(all zone sets and zone definitions); firmware library; call-home
settings (phone numbers and dialing options); configuration data for