With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cesServerFarmRserverDroppedConns
Cisco Enhanced SLB Server Farm Real Server Dropped Connections
1.3.6.1.4.1.9.9.470.1.1.3.1.13
The total number of connections that were not connected to this server due to the current connection count being at the max number of allowed connections(cevServerFarmRserverMaxConns value) to this real server.
Back to CISCO-ENHANCED-SLB-MIB MIB page.
IPHost Network monitor allows you to monitor cesServerFarmRserverDroppedConns on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.