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770 | PIM Sparse-Mode
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PIM-SM Snooping Example
Figure 34-8 shows an example with PIM-SM snooping enabled. When Router A sends a join message to
Router B, the switches forward the join message only to Router B without flooding the message to other
connected routers, such as Routers C and D.
Figure 34-8. PIM-SM Snooping: Join Message Flow
Router A
(*,G) PIM join
IGMP join
Receiver
Router C
Router D
Router B
RP Source
Layer 2 Network
with PIM Snooping