1 HV Installation and Operations Guide

138 Main Menu Chapter 6

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.

Figure 43 Update ALPA