With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
alTotalNacDisabledSessions
ALTIGA Total Nac Disabled Sessions
1.3.6.1.4.1.3076.2.1.2.17.1.21
The number of sessions not subjected to NAC since the device booted.
Back to ALTIGA-SESSION-STATS-MIB MIB page.
IPHost Network monitor allows you to monitor alTotalNacDisabledSessions on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.