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Glossary
This glossary provides definitions for the fibre-channel and switch terminology used
in the
IBM 2109 Model S16 Installation and Service Guide
.
agent. The interface to a managed device
alias server. A fabric software facility that supports multicast group management.
AL_PA. Arbitrated Loop Physical Address. An 8-bit value used to uniquely identify an individual port within a loop. A
loop may have one or multiple AL_PAs.
ANSI. American National Standards Institute.
arbitrated loop. The FC arbitrated loop (FC-AL) is a standard defined on top of the FC_PH) standard. It defines the
arbitration on a loop where several FC nodes share a common medium.
ASIC. Application specific integrated circuit.
asynchronous transfer mode. A broadband technology for transmitting data over LANs or WANs, based on relaying
cells of fixed size. Provides any-to-any connectivity, and nodes can transmit simultaneously.
ATM. See
asynchronous transfer mode.
BIOS. Basic input and output system.
BISR. Built-in self-repair.
BTU. British thermal unit.
CAM. Content addressable memory.
cascading switches. Switches that are interconnected to build large fabrics.
class 2. In class 2 service, the fabric and destination N_port provide connectionless service with notification of
delivery or nondelivery between the two N_ports.
class 3. Class 3 service provides a connectionless service without notification of delivery between N_ports. The
transmission and routing of class 3 frames is the same as for class 2 frames.
class F. A class of service used for interswitch control traffic. It provides connectionless service with notification of
delivery or nondelivery between two E_ports.
community (SNMP). An SNMP community is a relationship between an SNMP agent and a set of SNMP managers
that defines authentication, access control, and proxy characteristics.
COS. Class of service.
CPU. Central processing unit.
credit. Credit, when applied to a switch, is the numeric value that represents the maximum number of receive buffers
provided by an F_port or FL_port to its attached N_port or NL_port respectively such that the N_port or NL_port may
transmit frames without over-running the F_port or NL_port.
daemon. In the AIX operating system, a program that runs unattended to perform a standard service. Some
daemons are triggered automatically to perform their task; other operate periodically. Synonymous with demon.
defined configuration. The complete set of all zone objects that are defined in the fabric. The defined configuration
may include multiple zone configurations.
domain_ID. The domain number uniquely identifies the switch in a fabric. This switch domain ID is normally
automatically assigned by the switch and may be any value between 0 - 31. This number can also be assigned
manually.
© Copyright IBM Corp. 1999, 2000
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Summary of Contents for 2109 - SAN Fibre Channel Switch Model S16
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