HP Surestore Tape Library Model 10/180 HP Surestore Bridge FC 2/1 LV and FC 4/ - Page 136
Auto Sense - Soft ALPA, N_Port, Update ALPA
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Figure 43 In Auto Sense - Soft ALPA mode, the bridge FC port tries to come up as a loop and if not successful, then tries to come up as a fabric. If the port comes up as a loop, it then determines whether its's on a private or public loop. In N_Port mode, the bridge's FC port skips trying to come up as a loop and instead tries coming up as a fabric only. If the bridge is on a loop and N_Port mode is selected, an error in communication may occur. In Auto Sense - Hard ALPA mode, a unique one-byte valid value (derived from an Arbitrated Loop Topology as defined in ANSI specifications FC_AL ver 4.5) is used by the bridge for the Fibre Channel configuration. When configuring the FC AL_PA, the bridge presents a list of loop addresses along with the corresponding AL_PA. From here, the user can select the loop address desired. Update ALPA 138 Main Menu Chapter 6
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