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NOTE:
For more information about designated forwarder (DF), see the chapter “PIM configuration.”
CAUTION:
The reset command clears the information in the multicast routing table or the multicast forwarding
table, and might cause failure of multicast transmission.
When a routing entry is deleted from the multicast routing table, the corresponding forwarding entry
is also deleted from the multicast forwarding table.
When a forwarding entry is deleted from the multicast forwarding table, the corresponding routing
entry is also deleted from the multicast routing table.
Configuration examples
Changing an RPF route
Network requirements
• PIM-DM runs in the network. All switches in the network support multicast.
• Switch A, Switch B, and Switch C run OSPF.
• Receiver can receive the multicast data from Source through the path Switch A – Switch B, which is
the same as the unicast route.
• Perform the following configuration so that Receiver can receive the multicast data from Source
through the path Switch A – Switch C – Switch B, which is different from the unicast route.
Network diagram
Figure 27 Network diagram for RPF route alternation configuration
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