With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
crasIPSecNumSessions
cras IP Sec Num Sessions
1.3.6.1.4.1.9.9.392.1.3.26
The number of currently active IPSec sessions.
Back to CISCO-REMOTE-ACCESS-MONITOR-MIB MIB page.
IPHost Network monitor allows you to monitor crasIPSecNumSessions on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.