1-26[SwitchB] ipv6[SwitchB] mld-snooping[SwitchB-mld-snooping] quit# Create VLAN 100, add GigabitEthernet 1/0/1 through GigabitEthernet 1/0/4 into VLAN 100.[SwitchB] vlan 100[SwitchB-vlan100] port gigabitethernet 1/0/1 to gigabitethernet 1/0/4# Enable the MLD Snooping feature in VLAN 100.[SwitchB-vlan100] mld-snooping enable[SwitchB-vlan100] quitConfigurations of Switch C and Switch D are similar to the configuration of Switch B.3) Verify the configurationWhen the MLD Snooping querier starts to work, all the switches but the querier receive MLD generalqueries. Use the display mld-snooping statistics command to view the statistics information of theseMLD messages received.# View the MLD message statistics on Switch B.[SwitchB-vlan100] display mld-snooping statisticsReceived 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.Troubleshooting MLD SnoopingSwitch Fails in Layer 2 Multicast ForwardingSymptomA switch fails to implement Layer 2 multicast forwarding.AnalysisMLD Snooping is not enabled.Solution1) Enter the display current-configuration command to view the running status of MLD Snooping.2) If MLD Snooping is not enabled, use the mld-snooping command to enable MLD Snoopingglobally, and then use mld-snooping enable command to enable MLD Snooping in VLAN view.3) If MLD Snooping is disabled only for the corresponding VLAN, just use the mld-snooping enablecommand in VLAN view to enable MLD Snooping in the corresponding VLAN.
