With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cipSecTunHistInDecrypts
Cisco IPSec Sec Tunnel History In Decrypts
1.3.6.1.4.1.9.9.171.1.4.3.1.1.36
The total number of inbound decryption's performed by this IPsec Phase-2 Tunnel.
Back to CISCO-IPSEC-FLOW-MONITOR-MIB MIB page.
IPHost Network monitor allows you to monitor cipSecTunHistInDecrypts on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.