Configuration Examples; Changing An Rpf Route - 3Com S7906E Configuration Manual

The reset command clears the information in the multicast routing table or the multicast forwarding
table, and thus may cause failure of multicast transmission.
When a routing entry is deleted from the multicast routing table, the corresponding forwarding entry
will also be deleted from the multicast forwarding table.
When a forwarding entry is deleted from the multicast forwarding table, the corresponding route
entry will also be 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.
Typically, 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 1-5 Network diagram for RPF route alternation configuration
Configuration procedure
1) Configure IP addresses and unicast routing
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