With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cikeGlobalActiveTunnels
Cisco IKE Global Active Tunnels
1.3.6.1.4.1.9.9.171.1.2.1.1
The number of currently active IPsec Phase-1 IKE Tunnels.
Back to CISCO-IPSEC-FLOW-MONITOR-MIB MIB page.
IPHost Network monitor allows you to monitor cikeGlobalActiveTunnels 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.