With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cfmFlowMetricsTableChanged
Cisco Flow Monitor Flow Metrics Table Changed
1.3.6.1.4.1.9.9.692.1.3.2
This object indicates the value of sysUpTime the last time the device created or destroyed a row in cfmFlowMetricsTable.
Back to CISCO-FLOW-MONITOR-MIB MIB page.
IPHost Network monitor allows you to monitor cfmFlowMetricsTableChanged 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.