With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
fcIfCfOutOctets
Cisco Fibre Element If Cf Out Octets
1.3.6.1.4.1.9.9.289.1.2.4.1.4
The number of Class F frame octets, including the frame delimiters, transmitted by this port to its a attached Nx_Port.
Back to CISCO-FC-FE-MIB MIB page.
IPHost Network monitor allows you to monitor fcIfCfOutOctets 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.