With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swL2DevCtrlStpState
Switch L2 Device Control Stp State
1.3.6.1.4.1.171.11.70.5.2.1.2.6
This object can enable or disable the spanning tree algorithm during the runtime of the system.
Back to DES3528-L2MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor swL2DevCtrlStpState 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.