With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swISMVlanGroupProfAddrTable
Switch ISM Vlan Group Prof Address Table
1.3.6.1.4.1.171.12.64.3.3
This table contains the multicast address of each IGMP snooping multicast VLAN group profile.
Back to MCAST-VLAN-MIB MIB page.
IPHost Network monitor allows you to monitor swISMVlanGroupProfAddrTable 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.
