With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cgdDnsTcpSrcPortErrs
Cisco Global Server Load Balancer DNS Dns Tcp Source Port Errs
1.3.6.1.4.1.9.9.595.1.4.13
This object specifies the number of DNS queries received with TCP source port value as zero.
Back to CISCO-GSLB-DNS-MIB MIB page.
IPHost Network monitor allows you to monitor cgdDnsTcpSrcPortErrs on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.
