31
Task Command
Remove the dynamic IGMP snooping forwarding
entries for the specified multicast groups.
reset igmp-snooping group { group-address
[ source-address ] | all } [ vlan vlan-id ]
Remove dynamic router ports. reset igmp-snooping router-port { all | vlan vlan-id }
Clear statistics for the IGMP messages learned by
IGMP snooping.
reset igmp-snooping statistics
IGMP snooping configuration examples
Group policy and simulated joining configuration example
Network requirements
As shown in Figure 12, Router A runs IGMPv2 and serves as the IGMP querier. Switch A runs IGMPv2
snooping.
Configure a group policy and simulated joining to meet the following requirements:
• Host A and Host B receive only the multicast data addressed to the multicast group 224.1.1.1.
• Multicast data can be forwarded through GigabitEthernet 2/1/3 and GigabitEthernet 2/1/4 of
Switch A uninterruptedly, even though Host A and Host B fail to receive the multicast data.
• Switch A will drop unknown multicast data instead of flooding it in VLAN 100.
Figure 12 Network diagram
Configuration procedure
1. Assign an IP address and subnet mask to each interface according to Figure 12. (Details not
shown.)
2. Configure Router A:
# Enable IP multicast routing.
<RouterA> system-view
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