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[SwitchB-vlan100] port gigabitethernet 1/0/1 to gigabitethernet 1/0/4
# 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
, Router A connects to an IPv6 multicast source through port
GigabitEthernet 1/0/2, and to Switch A through port GigabitEthernet 1/0/1.
•
MLDv1 runs on Router A and MLDv1 snooping runs on Switch A. Router A acts as an MLD
querier.
•
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.