When both PIM snooping for IPv4 and IGMP snooping are enabled in the same VPLS service, multicast traffic is forwarded based on the combined multicast forwarding table. When PIM snooping is enabled, IGMP queries are forwarded but not snooped, consequently the IGMP querier needs to be seen either as a PIM neighbor in the VPLS service or the SAP toward it configured as an IGMP mrouter port.
There is no interaction between PIM snooping for IPv6 and PIM snooping for IPv4/IGMP snooping when all are enabled within the same VPLS service. The configurations of PIM snooping for IPv6 and MLD snooping are mutually exclusive.
When PIM snooping is enabled within a VPLS service, all IP multicast traffic and flooded PIM messages (these include all PIM snooped messages when not in PIM proxy mode and PIM hellos when in PIM proxy mode) are sent to any SAP or SDP binding configured with an IGMP-snooping mrouter port. This occurs even without IGMP-snooping enabled but is not supported in a BGP-VPLS or M-VPLS service.