With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swL2StpPortOperPointToPoint
Switch L2 Stp Port Operation Point To Point
1.3.6.1.4.1.171.11.70.5.2.16.4.1.11
The operational point-to-point status of the LAN segment attached to this port. It indicates whether a port is considered to have a point-to-point connection or not. The value is determined by management or by auto-detection, as described in the swL2StpPortAdminPointToPoint object.
Back to DES3026-L2MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor swL2StpPortOperPointToPoint 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 WiFi routers right now.