With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
crpmsVpdnActiveOverflowCalls
crpms Vpdn Active Overflow Calls
1.3.6.1.4.1.9.10.84.1.3.1.1.10
The number of active overflow calls that belong to this VPDN group.
Back to CISCO-RPMS-MIB MIB page.
IPHost Network monitor allows you to monitor crpmsVpdnActiveOverflowCalls 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.