With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swPoESystemInfoLegacyPD
Switch PoE System Info Legacy PD
1.3.6.1.4.1.171.12.24.2.1.1.7
The current status of legacy PD detection.
Back to PoE-MIB MIB page.
IPHost Network monitor allows you to monitor swPoESystemInfoLegacyPD 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.