Emulex 375 User Manual download pdf (Page 75)

EMULEX MODEL 375 SAN STORAGE SWITCH

USER’S GUIDE APPENDIX E: GLOSSARY

EMULEX CORPORATION 72

ART NUMBER 00041369-002 REV. B

APPENDIX E Glossary

AL_PA or Arbitrated

Loop Physical Address

A one-byte value used to identify a port in an Arbitrated Loop topology.

The value of the AL_PA corresponds to bits 7:0 of the 24-bit Native

Address Identifier.

Arbitration The process of selecting one respondent from a group requesting

service at the same time.

Close (CLS) An Arbitrated Loop protocol used to terminate a loop circuit.

Current Fill Word The fill word that the Loop Port State Machine uses when a fill word is to

be transmitted.

Duplex Cable Two fibers in one cable suitable for duplex transmission.

Fiber Optics Light transmission through optical fibers for communication or signaling

Fibre Channel Fibre Channel is a data transfer interface technology that maps several

common transport protocols including IP and SCSI, allowing it to merge

high-speed I/O and networking functionality in a single connectivity

technology. Fibre channel is an open standard as defined by ANSI and

OSI standards and operates over copper and fiber optic cabling at

distances of up to 10 Kilometers. It is unique in its support of multiple

interoperable topologies including point-to-point, arbitrated-loop and

switching and it offers several qualities of service for network

optimization. With its large packet sizes, Fibre Channel is ideal for

storage, video, graphic and mass data transfer applications.

LED Light-Emitting Diode. A status indicator on a switch.

Gb/s Gigabits per second.

Node An entity with one or more N_Ports or NL_Ports.

Open (OPN) An Arbitrated Loop protocol used to establish a loop circuit.

Protocol A data transmission convention which may include timing, control,

formatting, error detection with correction and data representation.

SCSI Small Computer System Interface. Standard interface for storage

modules.

SFP Small Form-Factor Pluggable transceiver. These transceivers are fully

compliant with FC-PI and MSA standards and occupy less than half the

board space of the existing GBIC products.

Topology The logical and/or physical arrangement of stations on a network. Fibre

Channel topologies include point-to-point, Arbitrated Loop, and switched

fabric.

Transceiver A device that converts one form of signaling to another for both

transmission and reception. SFPs and GBICs are transceivers.

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