Glossary – HP Brocade 4Gb SAN Switch for HP BladeSystem p-Class User Manual

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Glossary

8b/10b encoding

An encoding scheme that converts each 8-bit byte into 10 bits. Used to balance 1s and 0s in high-speed transports.

ABTS

Abort Basic Link Service. Also called an Abort Sequence.

ACC

Accept link service reply. The normal reply to an Extended Link Service request (such as FLOGI), indicating that the

request has been completed.

address identifier

A 24-bit or 8-bit value used to identify the source or destination of a frame. See also

AL_PA

Arbitrated loop physical address. A unique 8-bit value assigned during loop initialization to a port in an arbitrated

loop. Alternately, arbitrated loop parameters.

AL_TIME

Arbitrated loop time-out value. Twice the amount of time it would take for a transmission word to propagate around

a worst-case loop. The default value is 15 milliseconds.

alias

A logical grouping of elements in a fabric. An alias is a collection of port numbers and connected devices used to

simplify the entry of port numbers and WWNs when creating zones.

alias address identifier

An address identifier recognized by a port in addition to its standard identifier. An alias address identifier can be

shared by multiple ports. See also

alias AL_PA

An AL_PA value recognized by an L_Port in addition to the AL_PA assigned to the port. See also

alias server

A fabric software facility that supports multicast group management.

ARB

Arbitrative primitive signal. Applies only to an arbitrated loop topology. Transmitted as the fill word by an L_Port to

indicate that the port is arbitrating access to the loop.

arbitrated loop

A shared 100-MBps Fibre Channel transport structured as a loop. Can support up to 126 devices and one fabric

attachment. See also