HP Surestore 64 HP Surestore Director FC-64 Command Line Interface User's Guid - Page 124

C, Class 2 Fibre Channel service

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BB_Credit Also known as Buffer-to-Buffer Credit. The maximum number of frames a port can transmit without receiving a receive ready signal from the receiving device. blocked port Devices communicating with the port are prevented from logging into the director or communicating with other devices attached to the director. A blocked port continuously transmits the offline sequence. buffer A storage area for data in transit. Buffers compensate for differences in processing speeds between devices. See also BB_Credit. C channel A point-to-point link that transports data from one point to the other. class of Fibre Channel service Defines the level of connection dedication, acknowledgment, and other characteristics of a connection. Class F Fibre Channel service Used by switches to communicate across interswitch links (ISLs) to configure, control, and coordinate a multiswitch fabric. Class 2 Fibre Channel service Provides a connectionless (not dedicated) service with notification of delivery or nondelivery between two N_Ports. 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. 112 Glossary

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112
Glossary
BB_Credit
Also known as Buffer-to-Buffer Credit.
The maximum number of frames a port can
transmit without receiving a receive ready signal from the receiving device.
blocked port
Devices communicating with the port are prevented from logging into the director or
communicating with other devices attached to the director. A blocked port
continuously transmits the offline sequence.
buffer
A storage area for data in transit. Buffers compensate for differences in processing
speeds between devices.
See
also BB_Credit.
C
channel
A point-to-point link that transports data from one point to the other.
class of Fibre Channel service
Defines the level of connection dedication, acknowledgment, and other characteristics
of a connection.
Class F Fibre Channel service
Used by switches to communicate across interswitch links (ISLs) to configure, control,
and coordinate a multiswitch fabric.
Class 2 Fibre Channel service
Provides a connectionless (not dedicated) service with notification of delivery or
nondelivery between two N_Ports.
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.