With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
diffServAlgDropStatus
Services Differentiated Services Services Alg Dropped Status
1.3.6.1.2.1.97.1.6.2.1.12
The status of this conceptual row. All writable objects in this row may be modified at any time. Setting this variable to 'destroy' when the MIB contains one or more RowPointers pointing to it results in destruction being delayed until the row is no longer used.
Back to DIFFSERV-MIB MIB page.
IPHost Network monitor allows you to monitor diffServAlgDropStatus 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.