With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
csqModuleDropByNetflowOutOctets
Cisco Switch QOS Module Dropped By Netflow Out Octets
1.3.6.1.4.1.9.9.580.1.5.3.1.36
The total number of egress octets which are dropped by the netflow feature.
Back to CISCO-SWITCH-QOS-MIB MIB page.
IPHost Network monitor allows you to monitor csqModuleDropByNetflowOutOctets 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.