With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
csqModuleDropByNetflowInPackets
Cisco Switch QOS Module Dropped By Netflow In Packets
1.3.6.1.4.1.9.9.580.1.5.3.1.33
The total number of ingress packets which are dropped by the netflow feature.
Back to CISCO-SWITCH-QOS-MIB MIB page.
IPHost Network monitor allows you to monitor csqModuleDropByNetflowInPackets on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.