With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swDHCPServerState
Switch DHCP Server State
1.3.6.1.4.1.171.12.38.1.1
This object enables/disables the DHCP server status of the device.
Back to DHCP-Server-MIB MIB page.
IPHost Network monitor allows you to monitor swDHCPServerState 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.