With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swMldSnoopingCtrlState
Switch Mld Snooping Control State
1.3.6.1.4.1.171.12.34.3.2.1.11
This object indicates the status of this entry. other(1) - this entry is currently in use but the conditions under which it will remain so are different from each of the following values. disable(2) - MLD funtion is disabled for this entry. enable(3) - MLD funtion is enabled for this entry.
Back to MLD-SNOOPING-MIB MIB page.
IPHost Network monitor allows you to monitor swMldSnoopingCtrlState 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.