With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swMacBasedAuthStatePort
sw Mac Based Authorization State Port
Specifies the MAC-based Access Control host's port number.
Back to Mac-Based-Authentication-MIB MIB page.
IPHost Network monitor allows you to monitor swMacBasedAuthStatePort 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 routers right now.