With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swAuthEapolFramesRx
Switch Authentication Eapol Frames Rx
1.3.6.1.4.1.171.12.3.6.2.1.1
The number of valid EAPOL frames of any type that have been received by this Authenticator.
Back to AUTH-MIB MIB page.
IPHost Network monitor allows you to monitor swAuthEapolFramesRx on D-Link device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring D-Link switches right now.