Information Technology Reference
In-Depth Information
Figure 11-12 Initial Topology for the PIM-SM Network
R3
S2
S3
R1
R6
S3
S2
E0
b
S2
S4
S2
Source
R2
E0
R5
S3
S4
S3
S4
S5
R4
S3
S2
S2
R7
E0
Receiver
The first device to join the group is a receiver. The upstream router from the receiver knows
the RP's address and builds the shared tree to the RP to allow any traffic for this group to
flow to the receiver. Figure 11-13 shows the receiver's shared tree construction process.
Figure 11-13 Receiver Joins the Shared Tree to the RP
R3
R1
R6
Source
RP
R2
R5
R4
(*,G) Join
R7
Receiver
 
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