With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
slbVirtualNumberOfConnections
slb Virtual Number Of Connections
1.3.6.1.4.1.9.9.161.1.4.1.1.17
The number of currently assigned connections being handled by this virtual server.
Back to CISCO-SLB-MIB MIB page.
IPHost Network monitor allows you to monitor slbVirtualNumberOfConnections 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.