HP StorageWorks Fabric OS 5.X Master Glossary (AA-RW7NA-TE, September 2005)

CFN Change fabric name. An ELS field that appears in portLogDump command
output.
CHAP Challenge-Handshake Authentication Protocol. Allows remote servers and
clients to securely exchange authentication credentials. Both the server and
client are configured with the same shared secret.
chassis The metal fra m e in which the switch and switch components are mounted.
CIM Common Information Model. A management structure enabling disparate
resources to be managed by a common application. CIM is implementation
independent, allowing different mana gement applications to collect the required
data from a variety of sources. CIM is divided into a Core Model and Common
Models. The Core Model addresses high-level concepts (such as systems and
devices), as well as fundamental relationships (such a s d ependencies). The
Common Models describe speci fic problem domains such as computer system,
network, user or device management. The Common Models are subclasses of
the Core Model and may also be subclasses of each other.
CIMOM Common Information Model Object Manager. A model for d escribing
management information from the Distributed Mana gement Task Force (DMTF).
See also CIM.
circuit An established communication path between two ports. Consists of two virtual
circuits capable of transmitting in opposite directions.
Class 1 service The class of frame-switching ser vice for a dedicated connection between
two c ommunicating ports. Also ca lled connection-oriented service. Includes
acknowledgement of frame delivery or nondelivery.
Class 2 service A connectionless class of frame-switching ser vice that includes acknowledgement
of frame delivery or nondelivery.
Class 3 service A connectionless class of frame-switching servic e that does not include
acknowledgement of frame delivery or nondeliver y. Can be used to p rovide
a multicast connection between the frame originator and recipients, with
acknowledgement of frame delivery or nondelivery.
Class 4 service A connection-oriented service that allows fractional parts of the bandwidth
to be used in a virtual circuit.
Class 6 service A connection-oriented multicast service geared toward
video broadcasts
between a central server and clients.
Class F service The class of frame-switching ser vice for a direct connection between two
switches, allowing communication of control traffic between the E_Ports. Includes
acknowledgement of data delivery or nondelivery.
class of service Aspecified set of delivery characteristics and attributes for fram e delivery.
CLI Command line interface. An interface that depends entirely on the use of
commands, such as through telnet or SNMP, and does not involve a GUI.
client An entity that, using its common transport (CT), makes requests of a server.
CLS Close primitive signal. Used only in an arbitrated loop. Sent by an L_Port tha t i s
currently communicating in the lo o p, to close communication with another L_Port.
CM Central memor y. Physical memory that is internal to the computer. Also called
main memory.
CMA Central memory architecture. An architecture centralizing memory usage in
switches.
CMBISR Central memory built-in self-repair.
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Glossary