With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swMSTPMstPortInternalPathCost
Switch MSTP Mst Port Internal Path Cost
1.3.6.1.4.1.171.12.15.2.5.1.4
This is the value of this port to the path cost of paths towards the MSTI root.
Back to MSTP-MIB MIB page.
IPHost Network monitor allows you to monitor swMSTPMstPortInternalPathCost 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.