H3c-technologies H3C S3100V2 Series Switches Manuel d'utilisateur télécharger pdf (Page 78)

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 —

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H3c-technologies H3C S3100V2 Series Switches Manuel d'utilisateur Page 78

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