When a non RP router received a mcast packet, where should the router forward the packet? Toward the RP or toward the mcast group OIL?
My question is, how will a non RP router pin point its own position? Whether it was in the path from the source to RP or from RP to the destination group?
yes, the idea is to forward with the lightest overhead in terms of group states and encapsulation (no use of GRE towards RP even for the first packet)
Hope to help