Other IGMP snooping functions can be configured for virtual private LAN service (VPLS) only after IGMP snooping is enabled globally and for VPLS. Other IGMP snooping functions take effect in a virtual switching instance (VSI) only after IGMP snooping is enabled in the VSI.
By default, IGMP snooping is disabled globally and for VPLS on the switch.
When configuring VSI-based IGMP snooping, ensure that an AC-side interface is not a sub-interface.