With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cgdDnsDroppedQueries
Cisco Global Server Load Balancer DNS Dns Dropped Queries
1.3.6.1.4.1.9.9.595.1.4.4
This object specifies the number of DNS queries dropped.
Back to CISCO-GSLB-DNS-MIB MIB page.
IPHost Network monitor allows you to monitor cgdDnsDroppedQueries 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.