With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cfcpmiPortSignalLosses
Cisco Fibre Channel PMI Port Signal Losses
1.3.6.1.4.1.9.9.99997.1.2.3.1.9
The counter associated with the number of instances of signal loss detected at this port in a particular 15 minute interval in the past 24 hours.
Back to CISCO-FC-PM-MIB MIB page.
IPHost Network monitor allows you to monitor cfcpmiPortSignalLosses on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.