With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cshMonServerfarmRealServerPort
csh Monitoring Serverfarm Real Server Port
1.3.6.1.4.1.9.9.508.1.1.3.1.2
This object identifies the port number of the real server. The value zero specifies that port number is not used in conjunction with real server ip address. This value must correspond to an entry in cesServerFarmRserverTable (identified by INDEX cesServerFarmRserverPort) or cesRealServerProbeTable (identified by INDEX cesServerFarmRserverPort).
Back to CISCO-SLB-HEALTH-MON-MIB MIB page.
IPHost Network monitor allows you to monitor cshMonServerfarmRealServerPort on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.