With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
csbCurrPeriodicIpsecCalls
Cisco Session Border Curr Periodic Ipsec Calls
1.3.6.1.4.1.9.9.657.1.3.1.46
The number of active calls on this adjacency or account which are to or from registered subscribers using IPSEC during this interval.
Back to CISCO-SESS-BORDER-CTRLR-CALL-STATS-MIB MIB page.
IPHost Network monitor allows you to monitor csbCurrPeriodicIpsecCalls 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.
