Restrictions and guidelines: IPv6 multicast VLAN configuration

The VLAN to be configured as an IPv6 multicast VLAN must exist.

If you have configured both a sub-VLAN-based IPv6 multicast VLAN and a port-based IPv6 multicast VLAN on a device, the port-based IPv6 multicast VLAN configuration takes effect.

Do not configure an IPv6 multicast VLAN on a device that is enabled with IPv6 multicast routing. Otherwise, the system displays errors. Do not enable IPv6 multicast routing on a device that is configured with IPv6 multicast VLANs. Otherwise, IPv6 multicast forwarding exceptions occur.

Do not configure a VLAN as an IPv6 multicast VLAN or an IPv6 sub-VLAN if the VLAN interface is enabled with IPv6 PIM or MLD. Otherwise, the system displays errors. Do not enable IPv6 PIM or MLD on a VLAN interface if the VLAN interface belongs to an IPv6 multicast VLAN or an IPv6 multicast sub-VLAN. Otherwise, IPv6 multicast forwarding exceptions occur.

The IPv6 multicast VLAN feature does not take effect on secondary VLANs. As a best practice, do not configure the IPv6 multicast VLAN feature for secondary VLANs. For more information about secondary VLAN, see Layer 2—LAN Switching Configuration Guide.