1-19MLD Snooping Configuration ExamplesConfiguring IPv6 Group Policy and Simulated JoiningNetwork requirementsz As shown in Figure 1-3, Router A connects to the IPv6 multicast source through GigabitEthernet1/0/2 and to Switch A through GigabitEthernet 1/0/1. Router A is the MLD querier on the subnet.z MLDv1 is required on Router A, MLD Snooping version 1 is required on Switch A, and Router A willact as the MLD querier on the subnet.z It is required that the receivers, Host A and Host B, attached to Switch A can receive IPv6 multicasttraffic addressed to IPv6 multicast group FF1E::101 only.z It is required that IPv6 multicast data for group FF1E::101 can be forwarded throughGigabitEthernet 1/0/3 and GigabitEthernet 1/0/4 of Switch A even if Host A and Host B accidentally,temporarily stop receiving IPv6 multicast data.Network diagramFigure 1-3 Network diagram for IPv6 group policy simulated joining configurationSourceRouter A Switch AReceiverReceiverHost BHost AHost CGE1/0/1GE1/0/4GE1/0/2GE1/0/3MLD querier1::1/64GE1/0/12001::1/64GE1/0/21::2/64Configuration procedure1) Enable IPv6 forwarding and configure IPv6 addressesEnable IPv6 forwarding and configure an IPv6 address and prefix length for each interface as perFigure 1-3. The detailed configuration steps are omitted.2) Configure Router A# Enable IPv6 multicast routing, enable IPv6 PIM-DM on each interface, and enable MLDv1 onGigabitEthernet 1/0/1. system-view[RouterA] multicast ipv6 routing-enable[RouterA] interface gigabitethernet 1/0/1[RouterA-GigabitEthernet1/0/1] mld enable[RouterA-GigabitEthernet1/0/1] pim ipv6 dm[RouterA-GigabitEthernet1/0/1] quit[RouterA] interface gigabitethernet 1/0/2
