PIM-SM RP Function
In studying PIM-SM I'm having trouble figuring out exactly what the function of the RP is... Please tell me if I am correct.
First off in Dense mode, the traffic is flooded everywhere and then pruned later if no one wants that traffic. This is not the case in SM and is why we configure SM. I believe the function of the RP is to help prevent this by telling the router asking about a certain group, where to find the specific multicast address. I'm trying to dumb this down as much as possible without any lingo so I can truly understand this. It's driving me crazy... Please let me know if I am correct in my very basic explanation.