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MLD snooping querier configuration example
Network requirements
As shown in Figure 72, in a Layer-2-only network environment, two multicast sources (Source 1 and
Source 2) send IPv6 multicast data to multicast groups FF1E::101 and FF1E::102 respectively, Host A and
Host C are receivers of multicast group FF1E::101 and Host B and Host D are receivers of multicast group
FF1E::102.
MLDv1 runs on all the receivers and MLDv1 snooping runs on all the switches. Switch A, which is close
to the multicast sources, is chosen as the MLD snooping querier.
To prevent flooding of unknown multicast traffic within the VLAN, configure all the switches to drop
unknown multicast data packets.
Figure 72 Network diagram
Configuration procedure
1. Configure Switch A:
# Enable IPv6 forwarding, and enable MLD snooping globally.
<SwitchA> system-view
[SwitchA] ipv6
[SwitchA] mld-snooping
[SwitchA-mld-snooping] quit
# Create VLAN 100 and assign GigabitEthernet 1/0/1 through GigabitEthernet 1/0/3 to VLAN
100.
[SwitchA] vlan 100
[SwitchA-vlan100] port gigabitethernet 1/0/1 to gigabitethernet 1/0/3
# Enable MLD snooping and the function of dropping unknown IPv6 multicast data packets in
VLAN 100.
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