With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swQinQState
Switch Qin Q State
1.3.6.1.4.1.171.12.57.1.1
This object is used to enable/disable the Q-in-Q status.
Back to Q-IN-Q-MIB MIB page.
IPHost Network monitor allows you to monitor swQinQState 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.
