With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cipsCryptomapSetIfVirtual
Cisco IPsec Cryptomap Set If Virtual
1.3.6.1.4.1.9.10.62.1.2.3.4.1.1
The value of this object identifies if the interface to which the cryptomap set is attached is a tunnel (such as a GRE or PPTP tunnel).
Back to CISCO-IPSEC-MIB MIB page.
IPHost Network monitor allows you to monitor cipsCryptomapSetIfVirtual on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.