Technical data

Fabric OS Administrator’s Guide Glossary-3
Publication Number: 53-0000518-09
broadcast The transmission of data from a single source to all devices in the fabric, regardless of zoning. See also
“multicast”, “unicast”.
buffer-to-
buffer flow
control
Management of the frame transmission rate in either a point-to-point topology or in an arbitrated loop.
See also “BB_Credit”.
bypass
circuitry
Circuits that automatically remove a device from the data path when valid signals are dropped.
C
CA Certificate authority. A trusted organization that issues digital certificates. See also “digital certificate”.
CAM Content-addressable memory.
Class 1 service The class of frame-switching service for a dedicated connection between two communicating ports
(also called "connection-oriented service"). Includes acknowledgement of frame delivery or
nondelivery.
Class 2 service A connectionless class of frame-switching service that includes acknowledgement of frame delivery or
nondelivery.
Class 3 service A connectionless class of frame-switching service that does not include acknowledgement of frame
delivery or nondelivery. Can be used to provide 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 service 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
A specified set of delivery characteristics and attributes for frame delivery.
CLS Close primitive signal. Used only in an arbitrated loop. Sent by an L_Port that is currently
communicating in the loop, to close communication to another L_Port.
configuration (1) A set of parameters that can be modified to fine-tune the operation of a switch. Use the configshow
command to view the current configuration of your switch.
(2) In Brocade Zoning, a zoning element that contains a set of zones. The Configuration is the highest-
level zoning element and is used to enable or disable a set of zones on the fabric. See also “zone
configuration”.
COS Class of service.