With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
fcmPortClassFRxOctets
fcm Port Class F Rx Octets
1.3.6.1.2.1.10.56.1.4.1.22
The number of octets contained in Class F frames received at this port.
Back to FC-MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor fcmPortClassFRxOctets 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.