32
[RouterA] multicast routing
[RouterA-mrib] quit
# Enable IGMP on GigabitEthernet 2/1/1.
[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
3. Configure Switch A:
# Enable IGMP snooping globally.
<SwitchA> system-view
[SwitchA] igmp-snooping
[SwitchA-igmp-snooping] quit
# Create VLAN 100, assign GigabitEthernet 2/1/1 through GigabitEthernet 2/1/4 to the VLAN,
and enable IGMP snooping and dropping unknown multicast data for the VLAN.
[SwitchA] vlan 100
[SwitchA-vlan100] port gigabitethernet 2/1/1 to gigabitethernet 2/1/4
[SwitchA-vlan100] igmp-snooping enable
[SwitchA-vlan100] igmp-snooping drop-unknown
[SwitchA-vlan100] quit
# Configure a multicast group filter so that the hosts in VLAN 100 can join only the multicast group
224.1.1.1.
[SwitchA] acl number 2001
[SwitchA-acl-basic-2001] rule permit source 224.1.1.1 0
[SwitchA-acl-basic-2001] quit
[SwitchA] igmp-snooping
[SwitchA-igmp-snooping] group-policy 2001 vlan 100
[SwitchA-igmp-snooping] quit
# Configure GigabitEthernet 2/1/3 and GigabitEthernet 2/1/4 as simulated member hosts of
multicast group 224.1.1.1.
[SwitchA] interface gigabitethernet 2/1/3
[SwitchA-GigabitEthernet2/1/3] igmp-snooping host-join 224.1.1.1 vlan 100
[SwitchA-GigabitEthernet2/1/3] quit
[SwitchA] interface gigabitethernet 2/1/4
[SwitchA-GigabitEthernet2/1/4] igmp-snooping host-join 224.1.1.1 vlan 100
[SwitchA-GigabitEthernet2/1/4] quit
Verifying the configuration
# Send IGMP reports from Host A and Host B to join the multicast groups 224.1.1.1 and 224.2.2.2.
(Details not shown.)
# Display information about the dynamic IGMP snooping forwarding entries in VLAN 100 on Switch A.
[SwitchA] display igmp-snooping group vlan 100
Total 1 entries.
VLAN 100: Total 1 entries.
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