With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cpaeHostSessionId
Cisco Port Access Entity Host Session Id
1.3.6.1.4.1.9.9.220.1.11.1.11
A unique identifier of the 802.1x session.
Back to CISCO-PAE-MIB MIB page.
IPHost Network monitor allows you to monitor cpaeHostSessionId 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.