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Departmental Switch Model DS-16B2 Fabric OS Procedures Manual
g-3
Glossary
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.
C
Cascade Two or more interconnected Fibre Channel switches. 2000-Series
switches can be cascaded up to 239 switches, with a recommended
maximum of seven interswitch links (no path longer than eight
switches). See also Fabric and ISL.
Chassis The metal frame in which the switch and switch components are
mounted.
Circuit An established communication path between two ports. Consists of
two virtual circuits capable of transmitting in opposite directions. See
also Link.
Class 1 Service that provides a dedicated connection between two ports (also
called connection oriented service), with notification of delivery or
nondelivery.
Class 2 Service that provides multiplex and connectionless frame switching
service between two ports, with notification of delivery or
nondelivery.
Class 3 Service that provides a connectionless frame switching service
between two ports, without notification of delivery or nondelivery of
data. Can also be used to provide a multicast connection between the
originator and recipients, with notification of delivery or nondelivery.
Class F Connectionless service for control traffic between switches, with
notification of delivery or nondelivery of data between the E_Ports.
Class of Service A specified set of delivery characteristics and attributes for frame
delivery.
Comma A unique pattern (either 1100000 or 0011111) used in 8B/10B encoding
to specify character alignment within a data stream. See also K28.5.
Community (SNMP) A relationship between a group of SNMP managers and an SNMP
agent, in which authentication, access control, and proxy
characteristics are defined. See also SNMP.