With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cipSecTunIndex
Cisco IPSec Sec Tunnel Index
1.3.6.1.4.1.9.9.171.1.3.2.1.1
The index of the IPsec Phase-2 Tunnel Table. The value of the index is a number which begins at one and is incremented with each tunnel that is created. The value of this object will wrap at 2,147,483,647.
Back to CISCO-IPSEC-FLOW-MONITOR-MIB MIB page.
IPHost Network monitor allows you to monitor cipSecTunIndex on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.