
Configuring IP Multicasting and Multimedia Services
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Figure 6-4 shows how a source sends multicast packets to a group.
Figure 6-4. How a Source Sends Multicast Packets to a Group
IP0105A
R
R
R
R
RP
LAN A
LAN B
DR
DR
Rendezvous
point router
PIM router
Designated
router for LAN
R
RP
DR
First-hop router
Last-hop router
Join
message
S
Source
Receivers
Register
packets
Native
multicast
packets
3.
2.
1.
4.
Register-stop
message
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