Users Guide

Table Of Contents
IPv4 and IPv6 Multicast 1611
Figure 46-3. PIM-SM Sender Registration—Part 2
As soon as the SPT is built from the Source router to the RP, multicast
traffic begins to flow unencapsulated from source S to the RP.
Once this is complete, the RP Router will send a “Register Stop” message
to the first-hop router to tell it to stop sending the encapsulated data to
the RP.
RP
DR
First-Hop
(S, G) Register-Stop
Receiver
(S, G) traffic begins
arriving at the RP via the
Source tree
Source
RP sends a Register-Stop
back to the first-hop router
to stop the Register
process.