With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cfcmFLoginNxPortIndex
Fibre Channel Management F Login Nx Port Index
1.3.6.1.4.1.9.10.999999.1.9.1.1
An arbitrary integer which uniquely identifies an Nx_Port amongst all those attached to the Fx_Port indicated by ifIndex.
Back to CISCO-FC-MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor cfcmFLoginNxPortIndex on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.