117
[RouterA-mrib] quit
# Enable IGMP on GigabitEthernet 2/1/1 (the interface that connects to the stub network).
[RouterA] interface gigabitethernet 2/1/1
[RouterA-GigabitEthernet2/1/1] igmp enable
[RouterA-GigabitEthernet2/1/1] quit
# Enable PIM-DM on GigabitEthernet 2/1/2.
[RouterA] interface gigabitethernet 2/1/2
[RouterA-GigabitEthernet2/1/2] pim dm
[RouterA-GigabitEthernet2/1/2] quit
# Enable IP multicast routing, IGMP, and PIM-DM on Router B and Router C in the same way Router
A is configured. (Details not shown.)
# On Router D, enable IP multicast routing, and enable PIM-DM on each interface.
<RouterD> system-view
[RouterD] multicast routing
[RouterD-mrib] quit
[RouterD] interface gigabitethernet 2/1/1
[RouterD-GigabitEthernet2/1/1] pim dm
[RouterD-GigabitEthernet2/1/1] quit
[RouterD] interface gigabitethernet 2/1/2
[RouterD-GigabitEthernet2/1/2] pim dm
[RouterD-GigabitEthernet2/1/2] quit
[RouterD] interface gigabitethernet 2/1/3
[RouterD-GigabitEthernet2/1/3] pim dm
[RouterD-GigabitEthernet2/1/3] quit
[RouterD] interface gigabitethernet 2/1/4
[RouterD-GigabitEthernet2/1/4] pim dm
[RouterD-GigabitEthernet2/1/4] quit
Verifying the configuration
# Display PIM information on Router D.
[RouterD] display pim interface
Interface NbrCnt HelloInt DR-Pri DR-Address
GE2/1/1 0 30 1 10.110.5.1 (local)
GE2/1/2 1 30 1 192.168.1.2 (local)
GE2/1/3 1 30 1 192.168.2.2 (local)
GE2/1/4 1 30 1 192.168.3.2 (local)
# Display the PIM neighboring relationships on Router D.
[RouterD] display pim neighbor
Total Number of Neighbors = 3
Neighbor Interface Uptime Expires Dr-Priority
192.168.1.1 GE2/1/2 00:02:22 00:01:27 1
192.168.2.1 GE2/1/3 00:00:22 00:01:29 3
192.168.3.1 GE2/1/4 00:00:23 00:01:31 5
# Send an IGMP report from Host A to join the multicast group 225.1.1.1. (Details not shown.)
# Send multicast data from the multicast source 10.110.5.100/24 to the multicast group 225.1.1.1. (Details
not shown.)
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