With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swL2PortInfoNwayStatus
Switch L2 Port Info Nway Status
1.3.6.1.4.1.171.11.70.5.2.3.1.1.5
This object indicates the port speed and duplex mode.
Back to DES6500-SWL2MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor swL2PortInfoNwayStatus 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 access points right now.