If you use static RP, you disable dynamic RP learning. The following figure shows an unsupported configuration for static RP. In this example because of inter-operation between static RP and dynamic RP, no RP exists at switch 2. However, (S,G) creation and deletion occurs every 210 seconds at switch 16.
Switches 10, 15, and 16 use static RP, whereas switch 2 uses dynamic RP. The source is at switch 10, and the receivers are switches 15 and 16. The RP is at switch 15 locally. The receiver on switch 16 cannot receive packets because its SPT goes through switch 2.
Switch 2 is in a dynamic RP domain, so it cannot learn about the RP on switch 15. However, (S, G) records are created and deleted on switch 16 every 210 seconds.