C


Carrier Sense Multiple Access with Collision Detection (CSMA/CD)

The medium access control algorithm used by Ethernet technologies.



channel protocol

A generic term for any protocol used by a mainframe to control devices via its channel interface.



checksum

A mathematical calculation capable of detecting bit-level errors; used to verify the integrity of a frame or packet. Some checksum algorithms can detect multi-bit errors; others can detect only single-bit errors.



Class of Service (CoS)

(1) A synonym for QoS. (2) A field in the 802.1Q header used to mark Ethernet frames for QoS handling. (3) The mode of delivery in Fibre Channel networks.



classful network

An IP network address that complies with the addressing definitions in RFC 791.



Classless Interdomain Routing (CIDR)

A set of procedures for forwarding IP packets on the Internet using network addresses that do not comply with the addressing definitions in RFC 791.



Coarse Wavelength Division Multiplexing (CWDM)

A simplified implementation of dense wavelength division multiplexing (DWDM).



Command Descriptor Block (CDB)

See SCSI Command Descriptor Block (CDB).



command/response protocol

A protocol used to control devices. The devices can operate as peers, or as masters or slaves.



Common Internet File System (CIFS)

A file-level protocol native to Windows used to access storage across a network.



communication protocol

Any protocol that provides some or all of the functionality defined in one or more of the OSI layers.



connection allegiance

An iSCSI term referring to the mandatory requirement that all PDUs associated with a single SCSI command must traverse a single TCP connection.



crosstalk

Signal interference on a conductor caused by another signal on a nearby conductor.



cut-through switching

A method of switching in which the forwarding of each frame begins while the frame is still being received. As soon as sufficient header information is received to make a forwarding decision, the switch makes a forwarding decision and begins transmitting the received bits on the appropriate egress port. This method was popular during the early days of Ethernet switching but is no longer used except in high performance computing (HPC) environments.



Cyclic Redundancy Check (CRC)

A mathematical calculation capable of detecting multi-bit errors; used to verify the integrity of a frame or packet.






Storage Networking Protocol Fundamentals
Storage Networking Protocol Fundamentals (Vol 2)
ISBN: 1587051605
EAN: 2147483647
Year: 2007
Pages: 196
Authors: James Long

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