With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swL2StpPortAdminEdgePort
Switch L2 Stp Port Admin Edge Port
1.3.6.1.4.1.171.11.70.5.2.16.4.1.8
The administrative value of the Edge Port parameter. A value of TRUE(1) indicates that this port should be assumed as an edge-port and a value of FALSE(2) indicates that this port should be assumed as a non-edge-port.
Back to DES3026-L2MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor swL2StpPortAdminEdgePort 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.