With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cshMonProbeTotalPassedProbes
csh Monitoring Probe Total Passed Probes
1.3.6.1.4.1.9.9.508.1.1.2.1.2
This object identifies the number of passed probes. The probe is identified as pass if the real server returns a valid response.
Back to CISCO-SLB-HEALTH-MON-MIB MIB page.
IPHost Network monitor allows you to monitor cshMonProbeTotalPassedProbes 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.