Auto-RP and Default RP Placement (workbook 1 lab question)
In the Volume 1 workbook lab, Auto-RP and Default RP Placement, I am wondering why autorp listener is not working. Since autorp groups 18.104.22.168 and .40 are dense-mode flooded even in a PIM sparse-mode environment, why isn't R1 forwarding that to R5? Auto-RP works fine when R1 is the Auto-RP announcer. Why when I only configure static RP mappings for the Auto-RP groups and thereby placing those groups in a sparse-mode condition does R1 then forward it to R5. What is it about this NBMA point to multipoint interface on R1 that I don't understand? Does it have something to do with a split-horizon rule or something that affects dense-mode and not sparse-mode?
Thanks in advance....