With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
fcmInstanceIndex
fcm Instance Index
1.3.6.1.2.1.10.56.1.1.1.1
An arbitrary integer value that uniquely identifies this instance amongst all local Fibre Channel management instances. It is mandatory to keep this value constant between restarts of the agent, and to make every possible effort to keep it constant across restarts (but note, it is unrealistic to expect it to remain constant across all re-configurations of the local system, e.g., across the replacement of all non- volatile storage).
Back to FC-MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor fcmInstanceIndex on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco mobile switches right now.