With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cldcClientWgbMacAddress
Cisco LWAPP DOT11 Client Client Wgb Mac Address
1.3.6.1.4.1.9.9.599.1.3.1.1.5
This object specifies the MAC address of the WGB this 802.11 wireless client to which it is connected. This returns a non-zero value when the cldcClientWgbStatus is wgbClient.
Back to CISCO-LWAPP-DOT11-CLIENT-MIB MIB page.
IPHost Network monitor allows you to monitor cldcClientWgbMacAddress 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.