Rendezvous Point Router Considerations - Avaya 8800 Planning And Engineering, Network Design

Multicast network design
This resolution applies only to static RP configurations, not to C-RP configurations.
Nonsupported static RP configurations
If you use static RP, dynamic RP learning is disabled. The following figure shows a nonsupported
configuration for static RP. In this example because of interoperation 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.
Figure 98: Nonsupported static RP configuration
Switches 10, 15, and 16 use Static RP, whereas Switch 2 uses dynamic RP. The source is at Switch
10, and the receivers are Switch 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.

Rendezvous Point router considerations

You can place an RP on any switch when VLANs extend over several switches. Indeed, you can
place your RP on any switch in the network. However, when using PIM-SM, Avaya recommends
that you not span VLANs on more than two switches.
June 2016 Planning and Engineering — Network Design
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