With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cDot11ClientWepKeyMixEnabled
Cisco Dot11 Client Wep Key Mix Enabled
1.3.6.1.4.1.9.9.273.1.2.1.1.7
When this object is 'true', it indicates that this client is using WEP key mixing.
Back to CISCO-DOT11-ASSOCIATION-MIB MIB page.
IPHost Network monitor allows you to monitor cDot11ClientWepKeyMixEnabled 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.