With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cfmFlowMonitorFlowCount
Cisco Flow Monitor Flow Monitor Flow Count
1.3.6.1.4.1.9.9.692.1.1.1.1.4
This object indicates the number of traffic flows currently monitored by the flow monitor.
Back to CISCO-FLOW-MONITOR-MIB MIB page.
IPHost Network monitor allows you to monitor cfmFlowMonitorFlowCount 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.