H3C Technologies H3C S7500E Series Switches - Manual (Page 291)

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2) Configure Switch B
# Enable IPv6 forwarding and enable MLD snooping globally.
system-view
[SwitchB] ipv6
[SwitchB] mld-snooping
[SwitchB-mld-snooping] quit
# Create VLAN 100, add GigabitEthernet 2/0/1 through GigabitEthernet 2/0/4 into VLAN 100.
[SwitchB] vlan 100
[SwitchB-vlan100] port gigabitethernet 2/0/1 to gigabitethernet 2/0/4
# Enable the MLD snooping feature and the function of dropping unknown IPv6 multicast data
packets in VLAN 100.
[SwitchB-vlan100] mld-snooping enable
[SwitchB-vlan100] mld-snooping drop-unknown
[SwitchB-vlan100] quit
Configurations of Switch C and Switch D are similar to the configuration of Switch B.
3) Verify the configuration
When the MLD snooping querier starts to work, all the switches but the querier receive MLD
general queries. Use the display mld-snooping statistics command to view the statistics
information of these MLD messages received.
# Display the MLD message statistics on Switch B.
[SwitchB-vlan100] display mld-snooping statistics
Received MLD general queries:3.
Received MLDv1 specific queries:0.
Received MLDv1 reports:12.
Received MLD dones:0.
Sent MLDv1 specific queries:0.
Received MLDv2 reports:0.
Received MLDv2 reports with right and wrong records:0.
Received MLDv2 specific queries:0.
Received MLDv2 specific sg queries:0.
Sent MLDv2 specific queries:0.
Sent MLDv2 specific sg queries:0.
Received error MLD messages:0.
MLD Snooping Proxying Configuration Example
Network requirements
As shown in Figure 9-7 ,
z Router A connects to an IPv6 multicast source through port GigabitEthernet 2/0/2, and to
Switch A through port GigabitEthernet 2/0/1.
z Router A runs MLDv1 and Switch A runs MLDv1 Snooping. Router A acts as an MLD
querier.
z Configure MLD snooping proxying on Switch A, enabling the switch to forward MLD reports
and done messages on behalf of attached hosts and to respond to MLD queries from
Router A and forward the queries to the hosts on behalf of Router A.