Maipu Administration Guide

Configure MLD Basic Functions

Configuration Condition

Before configuring the MLD basic functions, first complete the following task:

Enable the interface IPv6
Enable the interface MLD

Enable the MLD Protocol

Table 9-1 Enable the MLD protocol

Step	Command	Description
Enter global configuration mode	configure terminal	-
Enable the IPv6 multicast forwarding	ipv6 multicast-routing [ vrf vrf-name ]	Mandatory By default, the IPv6 multicast forwarding is disabled.
Enter the interface configuration mode	interface interface-name	-
Enable the MLD protocol	ipv6 mld enable	Mandatory By default, do not enable MLD. After enabling MLD, all MLD configurations can take effect.

Configure the MLD Version

Table 9-2 Configure the MLD version

Step	Command	Description
Enter global configuration mode	configure terminal	-
Enter the interface configuration mode	interface interface-name	-
Configure the MLD version	ipv6 mld version version-number	Mandatory By default, the MLD version is 2.

Because the packet structure and kind of different versions of MLD protocols are different, it is suggested to configure the same version of IGMP for all devices on the same subnet.

Configure Static Group Adding

After configuring one static group or source group in the interface, the device regards that the interface has the receiver of the multicast group or source group.

Table 9-3 Configure static group adding

Step	Command	Description
Enter global configuration mode	configure terminal	-
Enter the interface configuration mode	interface interface-name	-
Configure the static group adding	ipv6 mld static-group group-ipv6-address [ source-ipv6-address ]	Mandatory By default, the interface is not added to any multicast group or source group in the static mode.

Configure Multicast Group Filter

The interface configured with the MLD multicast group filter filters the group member relation report in the segment according to the ACL rules and only the group member relation report permitted by ACL is processed and the un-permitted is directly dropped. For the existing but not permitted by ACL multicast group, immediately delete the multicast group information.

Table 9-4 Configure multicast group filter

Step	Command	Description
Enter global configuration mode	configure terminal	-
Enter the interface configuration mode	interface interface-name	-
Configure the IGMP multicast group filter	ipv6 mld access-group { access-list-number \| access-list-name }	Mandatory By default, the multicast group filter is not configured.

The ipv6 mld access-group command only supports the standard ACL.