With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cdaiVlanDropped
Cisco Dynamic ARP Inspection Vlan Dropped
1.3.6.1.4.1.9.9.374.1.4.1.1.3
This object indicates the number of ARP packets dropped by Dynamic ARP Inspection feature.
Back to CISCO-DYNAMIC-ARP-INSPECTION-MIB MIB page.
IPHost Network monitor allows you to monitor cdaiVlanDropped on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco mobile switches right now.