H3C Technologies H3C S12500 Series Switches - Manual (Page 331)

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NOTE:
On a switch with Layer 3 IPv6 multicast routing enabled, use the display mld group port-info command
to display Layer 2 port information.
• If IPv6 PIM is disabled on the switch, one of the following occurs:
{
If MLD is disabled, the switch deletes all its dynamic router ports.
{
If MLD is enabled, the switch maintains all its dynamic member ports and dynamic router ports.