Multicast support on subscriber interfaces is supported in both wholesale/retail models:
wholesale/retail VPRN (IPoE and PPPoE)
LAC/LNS (PPPoE only)
This model is shown in Figure: Wholesale/retail multicast support.
Figure: Wholesale/retail multicast support
The distinction between these two models is that in the case of LAC/LNS, the replication is performed further up in the network on an LNS node. This means that the traffic between LAC and LNS is multiplied by the amount of replications.