With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swMSMVlanForwardUnmatchedState
Switch MSM Vlan Forward Unmatched State
1.3.6.1.4.1.171.12.64.1.4
This indicates the MLD snooping multicast VLAN's forwarding state for Multicast VLAN unmatched packet.
Back to MCAST-VLAN-MIB MIB page.
IPHost Network monitor allows you to monitor swMSMVlanForwardUnmatchedState 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.
