With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
fcIfC2FbsyFrames
Cisco Fibre Element If C2 Fbsy Frames
1.3.6.1.4.1.9.9.289.1.2.2.1.6
The number of F_BSY frames generated by this port against Class 2 frames.
Back to CISCO-FC-FE-MIB MIB page.
IPHost Network monitor allows you to monitor fcIfC2FbsyFrames on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.