With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
fcmPortLcClass3TxOctets
fcm Port Lc Class3 Tx Octets
1.3.6.1.2.1.10.56.1.5.1.19
The number of octets contained in Class 3 frames transmitted out of this port.
Back to FC-MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor fcmPortLcClass3TxOctets 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.