With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cpaeWebAuthUnAuthStateTimeout
Cisco Port Access Entity Web Authentication Un Authentication State Timeout
1.3.6.1.4.1.9.9.220.1.9.10
The authentication timeout period for Web Proxy Authentication. Once a host enters 'initialize' state as indicated by its corresponding cpaeWebAuthHostState, such host will be removed if it can not be authenticated within the timeout period.
Back to CISCO-PAE-MIB MIB page.
IPHost Network monitor allows you to monitor cpaeWebAuthUnAuthStateTimeout 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.