With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swPoESystemStackingCtrlLedMode
Switch PoE System Stacking Control Led Mode
1.3.6.1.4.1.171.12.24.1.11.1.5
Specifies the system mode to be POE or NORMAL.
Back to PoE-MIB MIB page.
IPHost Network monitor allows you to monitor swPoESystemStackingCtrlLedMode 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.