With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cpaeUserGroupUserInterface
Cisco Port Access Entity User Group User Interface
1.3.6.1.4.1.9.9.220.1.5.1.6
Specifies the interface index that the user is authenticated on.
Back to CISCO-PAE-MIB MIB page.
IPHost Network monitor allows you to monitor cpaeUserGroupUserInterface on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.