H3C Technologies H3C S12500-X Series Switches - Manual (Page 55)

45
[SwitchA-mrib] quit
[SwitchA] interface vlan-interface 200
[SwitchA-Vlan-interface200] pim dm
[SwitchA-Vlan-interface200] quit
[SwitchA] interface vlan-interface 102
[SwitchA-Vlan-interface102] pim dm
[SwitchA-Vlan-interface102] quit
[SwitchA] interface vlan-interface 103
[SwitchA-Vlan-interface103] pim dm
[SwitchA-Vlan-interface103] quit
# Enable IP multicast routing and PIM-DM on Switch C in the same way Switch A is configured.
(Details not shown.)
# Use the display multicast rpf-info command to display the RPF route to the source on Switch B.
[SwitchB] display multicast rpf-info 50.1.1.100
RPF information about source 50.1.1.100:
RPF interface: Vlan-interface102, RPF neighbor: 30.1.1.2
Referenced route/mask: 50.1.1.0/24
Referenced route type: igp
Route selection rule: preference-preferred
Load splitting rule: disable
The output shows that the current RPF route on Switch B is contributed by a unicast routing protocol
and the RPF neighbor is Switch A.
4. Configure a static multicast route on Switch B, specifying Switch C as its RPF neighbor on the route
to the source.
[SwitchB] ip rpf-route-static 50.1.1.100 24 20.1.1.2
Verifying the configuration
Use the display multicast rpf-info command on Switch B to display information about the RPF route to the
source.
[SwitchB] display multicast rpf-info 50.1.1.100
RPF information about source 50.1.1.100:
RPF interface: Vlan-interface101, RPF neighbor: 20.1.1.2
Referenced route/mask: 50.1.1.0/24
Referenced route type: multicast static
Route selection rule: preference-preferred
Load splitting rule: disable
The output shows that:
• The RPF route on Switch B is the configured static multicast route.
• The RPF neighbor of Switch B is Switch C.
Creating an RPF route
Network requirements
As shown in Figure 19 :
• PIM-DM runs in the network and all switches in the network support IP multicast.
• Switch B and Switch C run OSPF, and have no unicast routes to Switch A.