This SnmpAdminString field names the previous FSM stage that an FC traffic-monitoring (SPAN) session configured on a fabric interconnect to mirror Fibre Channel traffic for analysis was in before its current one. Knowing the prior stage helps an admin reconstruct the sequence of steps the FSM has already passed through when diagnosing where a workflow stalled or looped. For example, if the FSM keeps cycling back to the same prior stage, that repetition visible in fsmPrev is itself a sign of a stuck retry loop.