Qualstar 501440 Rev. G - Manual (Page 64)

7.6 Configuration\Fibre Channel Menu
C••••••Fibre•Channel
•Device
•Device Left
•Device Right
Id Mode 0: SOFT
Loop Id 0: nnn
Topology 0: LOOP
Id Mode 1: SOFT
Loop Id 1: nnn
Topology 1: LOOP
L Id Mode 0: SOFT
L Loop Id 0: nnn
L Topology 0: LOOP
L Id Mode 1: SOFT
L Loop Id 1: nnn
L Topology 1: LOOP
R Id Mode 0: SOFT
R Loop Id 0: nnn
R Topology 0: LOOP
R Id Mode 1: SOFT
R Loop Id 1: nnn
R Topology 1: LOOP
The
Configuration\Fibre Channel
menu is used to configure the Fibre
Channel Option to the host.
7.6.1 Id Mode (Left or Right)
This value represents the Id Mode, which must be configured for either “Soft” or
“Fixed” addressing. Using “Soft” addressing, the Fibre Channel Option connects to an
arbitrated loop using the first available AL_PA, scanning from the highest valid ad-
dress to the lowest. Using “Fixed” addressing, the user selects a specific arbitrated
loop address (AL_PA) to connect with. If the selected address is not available, the Fi-
bre Channel Option will connect with the first available address it finds
FIXED The “Loop Id” entry is displayed.
SOFT The Loop Id is automatically assigned by the Fibre Channel loop
insertion protocol.
7.6.2 Loop Id (Left or Right)
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 Fibre Channel Option can use.
Table 7-1 shows how a Loop Id value maps to an AL_PA. If “SOFT” is requested for
the “Loop Id”, the Fibre Channel Option will attempt to obtain an available Loop Id,
in the following order: 0, 1, 2, etc.
501440 Rev. J
The Configuration Menu 7-9