With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
agentGratuitousARPEntry
agent Gratuitous ARP Entry
1.3.6.1.4.1.171.12.1.2.12.2.4.1
A list of information from the Gratuitous ARP Table.
Back to AGENT-GENERAL-MIB MIB page.
IPHost Network monitor allows you to monitor agentGratuitousARPEntry 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 WiFi routers right now.