With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ceipSecTunSaIfIndex
Cisco Enhanced IP Sec Tunnel Security Association If Index
1.3.6.1.4.1.9.9.432.1.1.5.1.5
This object represents the ifIndex of an interface where a tunnel with ceipSecTunIndex is created. Multiple IPsec tunnels can be created using the same interface.
Back to CISCO-ENHANCED-IPSEC-FLOW-MIB MIB page.
IPHost Network monitor allows you to monitor ceipSecTunSaIfIndex on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.