140
2.
Configure OSPF on the switches in the PIM-DM domain. (Details not shown.)
3.
Enable IP multicast routing, IGMP, and PIM-DM:
# On Switch A, enable IP multicast routing.
<SwitchA> system-view
[SwitchA] multicast routing
[SwitchA-mrib] quit
# Enable IGMP on VLAN-interface 100 (the interface that connects to the stub network).
[SwitchA] interface vlan-interface 100
[SwitchA-Vlan-interface100] igmp enable
[SwitchA-Vlan-interface100] quit
# Enable PIM-DM on VLAN-interface 103.
[SwitchA] interface vlan-interface 103
[SwitchA-Vlan-interface103] pim dm
[SwitchA-Vlan-interface103] quit
# Enable IP multicast routing, IGMP, and PIM-DM on Switch B and Switch C in the same way
Switch A is configured. (Details not shown.)
# On Switch D, enable IP multicast routing, and enable PIM-DM on each interface.
<SwitchD> system-view
[SwitchD] multicast routing
[SwitchD-mrib] quit
[SwitchD] interface vlan-interface 300
[SwitchD-Vlan-interface300] pim dm
[SwitchD-Vlan-interface300] quit
[SwitchD] interface vlan-interface 103
[SwitchD-Vlan-interface103] pim dm
[SwitchD-Vlan-interface103] quit
[SwitchD] interface vlan-interface 101
[SwitchD-Vlan-interface101] pim dm
[SwitchD-Vlan-interface101] quit
[SwitchD] interface vlan-interface 102
[SwitchD-Vlan-interface102] pim dm
[SwitchD-Vlan-interface102] quit
Verifying the configuration
# Display PIM information on Switch D.
[SwitchD] display pim interface
Interface NbrCnt HelloInt DR-Pri DR-Address
Vlan300 0 30 1 10.110.5.1 (local)
Vlan103 1 30 1 192.168.1.2 (local)
Vlan101 1 30 1 192.168.2.2 (local)
Vlan102 1 30 1 192.168.3.2 (local)
# Display PIM neighboring relationships on Switch D.
[SwitchD] display pim neighbor
Total Number of Neighbors = 3
Neighbor Interface Uptime Expires Dr-Priority Mode
192.168.1.1 Vlan103 00:02:22 00:01:27 1
192.168.2.1 Vlan101 00:00:22 00:01:29 3