With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cpaePortOperVlan
Cisco Port Access Entity Port Operational Vlan
1.3.6.1.4.1.9.9.220.1.1.1.7
The VlanIndex of the Vlan which is assigned to this port via IEEE-802.1x and related methods of authentication supported by the system. A value of zero for this object indicates that no Vlan is assigned to this port via IEEE-802.1x authentication.
Back to CISCO-PAE-MIB MIB page.
IPHost Network monitor allows you to monitor cpaePortOperVlan on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco mobile switches right now.