With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cfcpmcPortAddressErrors
Cisco Fibre Channel PMC Port Address Errors
1.3.6.1.4.1.9.9.99997.1.2.2.1.15
The counter associated with the number of frames received with unknown addressing in the current 15 minute interval.
Back to CISCO-FC-PM-MIB MIB page.
IPHost Network monitor allows you to monitor cfcpmcPortAddressErrors on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.