With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cpaePortMode
Cisco Port Access Entity Port Mode
1.3.6.1.4.1.9.9.220.1.1.1.2
Specifies the current mode of dot1x operation on the port. singleHost(1): port allows one host to connect and authenticate. multiHost(2) : port allows multiple hosts to connect. Once a host is authenticated, all remaining hosts are also authorized. multiAuth(3) : port allows multiple hosts to connect and each host is authenticated. other(4) : none of the above. This is a read-only value which can not be used in set operation. If the port security feature is enabled on the interface, the configuration of the port security (such as the number of the hosts allowed, the security violation action, etc) will apply to the interface.
Back to CISCO-PAE-MIB MIB page.
IPHost Network monitor allows you to monitor cpaePortMode 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.