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To do... Use the command... Remarks
Enter system view
system-view —
Enter Ethernet interface view,
Layer 2 aggregate interface
view, or port group view
interface interface-type interface-number
Required
Use either approach
port-group manual port-group-name
Disable the port from
becoming a dynamic router
port
mld-snooping router-port-deny [ vlan
vlan-list ]
Required
By default, a port can
become a dynamic router
port.
NOTE:
This configuration does not affect the static router port configuration.
Configuring MLD snooping querier
Configuration prerequisites
Before you configure MLD snooping querier, complete the following tasks:
• Enable MLD snooping in the VLAN
• Determine the MLD general query interval
• Determine the MLD last-member query interval
• Determine the maximum response time for MLD general queries
• Determine the source IPv6 address of MLD general queries
• Determine the source IPv6 address of MLD multicast-address-specific queries
Enabling MLD snooping querier
In an IPv6 multicast network that runs MLD, a multicast router or Layer 3 multicast switch sends MLD
queries, so that all Layer 3 multicast devices can establish and maintain multicast forwarding entries, in
order to forward multicast traffic correctly at the network layer. This router or Layer 3 switch is called the
“MLD querier.”
However, a Layer 2 multicast switch does not support MLD. Therefore, it cannot send MLD general
queries by default. When you enable MLD snooping querier on a Layer 2 switch in a VLAN where
multicast traffic is switched only at Layer 2 and no Layer 3 multicast devices are present, the Layer 2
switch sends MLD queries, so that multicast forwarding entries can be created and maintained at the
data link layer.
Follow these steps to enable the MLD snooping querier:
To do... Use the command... Remarks
Enter system view system-view —
Enter VLAN view vlan vlan-id —
Enable the MLD snooping querier mld-snooping querier
Required
Disabled by default
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