With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cipSecTunHcOutOctets
Cisco IPSec Sec Tunnel Hc Out Octets
1.3.6.1.4.1.9.9.171.1.3.2.1.40
A high capacity count of the total number of octets sent by this IPsec Phase-2 Tunnel. This value is accumulated AFTER determining whether or not the packet should be compressed.
Back to CISCO-IPSEC-FLOW-MONITOR-MIB MIB page.
IPHost Network monitor allows you to monitor cipSecTunHcOutOctets 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.