With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cipSecTunActiveTime
Cisco IPSec Sec Tunnel Active Time
1.3.6.1.4.1.9.9.171.1.3.2.1.10
The length of time the IPsec Phase-2 Tunnel has been active in hundredths of seconds.
Back to CISCO-IPSEC-FLOW-MONITOR-MIB MIB page.
IPHost Network monitor allows you to monitor cipSecTunActiveTime 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.