With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cgdSourceAddressListHits
Cisco Global Server Load Balancer DNS Source Address List Hits
1.3.6.1.4.1.9.9.595.1.7.1.1.2
This object specifies the number of times a DNS query originated from the source addresses configured in this source address list since the GSLB device was last started.
Back to CISCO-GSLB-DNS-MIB MIB page.
IPHost Network monitor allows you to monitor cgdSourceAddressListHits 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.