With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swDHCPServerPingTimeOut
Switch DHCP Server Ping Time Out
1.3.6.1.4.1.171.12.38.1.3
This object specifies the amount of time the DHCP server must wait before timing out a ping packet.
Back to DHCP-Server-MIB MIB page.
IPHost Network monitor allows you to monitor swDHCPServerPingTimeOut 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 routers right now.