director 2/64 service manual

Glossary–4 director 2/64 service manual
Glossary
Class 2 Fibre Channel service
Provides a connectionless (not dedicated) service with notification of delivery or nondelivery
between two N_Ports. In-order delivery of frames is not guaranteed.
Class 3 Fibre Channel service
Provides a connectionless (not dedicated) service without notification of delivery or
nondelivery between two N_Ports. Also known as datagram.
community profile
Information that specifies which management objects are available to what management
domain or SNMP community name.
concurrent maintenance
Ability to perform maintenance tasks, such as removal or replacement of field-replaceable
units (FRUs), while normal operations continue without interruption. See also nondisruptive
maintenance.
configuration data
Configuration data includes: identification data, port configuration data, operating parameters,
SNMP configuration, and zoning configuration. A configuration backup file is required to
restore configuration data if the control processor (CTP2) card in a nonredundant director is
removed and replaced.
connectionless
Nondedicated link. Typically used to describe a link between nodes which allows the switch to
forward Class 2 or Class 3 frames as resources (ports) allow.
connector
See optical fiber connector.
control processor (CTP2) card
Circuit card that contains the director microprocessor. The CTP2 card also initializes hardware
components of the system after power-on.
control unit
A device that controls the reading, writing, or displaying of data at one or more input/output
units.
control unit port
An internal director port on the CTP2 card that communicates with the attached IBM S/390 or
similar processor channels to report error conditions and link initialization.