After IPv6 PIM-DM configuration is complete on a network, user hosts use MLD to send VoD requests to group G. However, the user hosts cannot receive any multicast data.
Run the display ipv6 routing-table command to check whether the switch has an IPv6 unicast route to the multicast source.
IPv6 multicast routing depends on IPv6 unicast routing. If the switch does not have an IPv6 unicast route to the multicast source, configure an IPv6 unicast routing protocol to dynamically generate a route or configure an IPv6 unicast static route to the multicast source.
Run the display pim ipv6 interface [ interface-type interface-number | up | down ] [ verbose ] command to check IPv6 PIM information on each interface.
If no IPv6 PIM information is displayed on an interface or the IPv6 PIM mode on the interface is sparse, PIM-DM is not enabled on the interface. Run the pim ipv6 dm command in the interface view to enable IPv6 PIM-DM.
Run the display mld interface command to check the MLD configuration on the interface directly connected to the network segment of the user hosts.
If no information is displayed, MLD is not enabled on the interface. Run the mld enable command in the interface view to enable MLD.
Run the display current-configuration configuration pimv6 command to check the current configuration in the PIM-IPv6 view.
If the command output contains "source-policy acl6-number", a source-based filtering policy is configured. If the received multicast data is not in the range permitted by the IPv6 ACL, the switch drops the multicast data. Run the undo source-policy command to delete the source-based filtering policy or configure new ACL rules to permit the multicast data requested by the user hosts.