SSM Data Forwarding

L2 forwarding decision of SSM data traffic is taken by the Multicast manager. Sources configured in the SSM map are considered only when a MLDv1 receiver is connected to a port. For the same group, there may be another port on which only MLDv2 receiver is present. For this port, SSM map sources are not considered.

L3 forwarding decision of SSM data traffic is taken by PIM. PIM provides the list of egress VLANs to be included, and the multicast manager decides the egress ports on each of these VLANs.