Qualstar 501440 Rev. G Manual

A SERVICE OF

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The Id Mode menu item has two selections, FIXED or SOFT. If the mode is FIXED,

the

Loop Id entry is displayed. If the Id Mode is SOFT, the Loop ID is automati-

cally assigned by the FCO.

During the Fibre Channel Arbitrated Loop (FC-AL) initialization process, a unique

Arbitrated Loop Physical Address (AL_PA) value is assigned to each port on the loop.

Not all of the 256 hex values are allowed as AL_PA values per FC-AL. The Loop Id

value is used to represent the 126 addresses that the FCO can use. Table 7-1 shows

how a Loop Id value maps to an AL_PA. If the Id Mode is “SOFT”, the FCO will at-

tempt to obtain an available Loop Id, in the following order: 0, 1, 2, etc.

6-20 FCO Type C Installation 501440 Rev. G