With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swMacBasedAuthInfoMacIndex
sw Mac Based Authorization Info Mac Index
This object indicates the authenticated MAC address.
Back to Mac-Based-Authentication-MIB MIB page.
IPHost Network monitor allows you to monitor swMacBasedAuthInfoMacIndex 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.
