1-7z Configure the sub-VLAN-based IPv6 multicast VLAN feature so that Router A just sends IPv6multicast data to Switch A through the IPv6 multicast VLAN and Switch A forwards the traffic to thereceivers that belong to different user VLANs.Figure 1-4 Network diagram for sub-VLAN-based IPv6 multicast VLAN configurationSourceReceiverHost AVLAN 2GE1/0/2GE1/0/3GE1/0/4Switch AMLD querierRouter AGE1/0/11:2/64GE1/0/22001::1/641::1/64ReceiverHost BVLAN 3ReceiverHost CVLAN 4GE1/0/1Configuration procedure1) Enable IPv6 forwarding and configure IPv6 addressesEnable IPv6 forwarding on each device and configure an IPv6 address and address prefix for eachinterface as per Figure 1-4. The detailed configuration steps are omitted here.2) Configure Router A# Enable IPv6 multicast routing, enable IPv6 PIM-DM on each interface and enable MLD on thehost-side interface GigabitEthernet 1/0/2. system-view[RouterA] multicast ipv6 routing-enable[RouterA] interface gigabitethernet 1/0/1[RouterA-GigabitEthernet1/0/1] pim ipv6 dm[RouterA-GigabitEthernet1/0/1] quit[RouterA] interface gigabitethernet 1/0/2[RouterA-GigabitEthernet1/0/2] pim ipv6 dm[RouterA-GigabitEthernet1/0/2] mld enable3) Configure Switch A# Enable MLD Snooping globally. system-view[SwitchA] mld-snooping[SwitchA-mld-snooping] quit# Create VLAN 2 and assign GigabitEthernet 1/0/2 to this VLAN.[SwitchA] vlan 2[SwitchA-vlan2] port gigabitethernet 1/0/2[SwitchA-vlan2] quit
