H3C Technologies H3C S3100V2 Series Switches - Manual (Page 78)

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To solve these problems, disable that switch port from changing into a dynamic router port upon
receiving an MLD general query or IPv6 PIM Hello message; thus, network security and control over
multicast users are enhanced.
Follow these steps to disable a port or a group of ports from changing into dynamic router ports:
To do... Use the command... Remarks
Enter system view system-view —
interface interface-type interface-number Enter Ethernet interface/Layer 2
aggregate interface view or port
group view
port-group manual port-group-name
Required
Use either approach
Disable the port or group of
ports from changing into
dynamic router ports
mld-snooping router-port-deny [ vlan
vlan-list ]
Required
By default, the port or group
of ports can change into
dynamic router ports.
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 is running MLD, a multicast router or Layer 3 multicast switch sends
periodic MLD general 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, and therefore cannot send MLD general
queries by default. By enabling MLD snooping querier on a Layer 2 switch in a VLAN where multicast
traffic must be Layer-2 switched only and no Layer 3 multicast devices are present, the Layer 2 switch will
act as the MLD querier to send periodic MLD queries. Multicast forwarding entries can then 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 —