With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cd11IfVlanSecurityEntry
Cisco DOT11 Interfaces Vlan Security Entry
1.3.6.1.4.1.9.9.272.1.1.1.10.1
Each entry is a set of encryption configurations for traffic on a VLAN of a IEEE 802.11 radio interface.
Back to CISCO-DOT11-IF-MIB MIB page.
IPHost Network monitor allows you to monitor cd11IfVlanSecurityEntry on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.