With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swISMVlanTagMemberPort
Switch ISM Vlan Tag Member Port
1.3.6.1.4.1.171.12.64.3.1.1.5
This indicates the port list of the tag member ports of the IGMP snooping multicast VLAN.
Back to MCAST-VLAN-MIB MIB page.
IPHost Network monitor allows you to monitor swISMVlanTagMemberPort 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.