With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swMldSnoopingQueryInterval
Switch Mld Snooping Query Interval
1.3.6.1.4.1.171.12.34.3.2.1.2
The frequency at which MLD Host-Query packets are transmitted on this switch.
Back to MLD-SNOOPING-MIB MIB page.
IPHost Network monitor allows you to monitor swMldSnoopingQueryInterval 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 VPN routers right now.