mld group-policy
Use mld group-policy to configure an IPv6 multicast group policy on an interface to control the IPv6 multicast groups that hosts attached to the interface can join.
Use undo mld group-policy to delete the IPv6 multicast group policy on an interface.
Syntax
mld group-policy ipv6-acl-number [ version-number ]
undo mld group-policy
Default
No IPv6 multicast group policy exists. Hosts attached to the interface can join any IPv6 multicast groups.
Views
Interface view
Predefined user roles
network-admin
mdc-admin
Parameters
ipv6-acl-number: Specifies an IPv6 basic or advanced ACL by its number in the range of 2000 to 3999. Receiver hosts can join only the IPv6 multicast groups that the ACL permits. If the ACL does not exist or have valid rules, receiver hosts cannot join IPv6 multicast groups.
version-number: Specifies an MLD version number, 1 or 2. By default, this command takes effect on both MLDv1 reports and MLDv2 reports.
Usage guidelines
An IPv6 multicast group policy filters MLD reports to control the IPv6 multicast groups that hosts can join.
This command does not take effect on static member interfaces because static member interfaces do not send MLD reports.
When you configure a rule in the IPv6 ACL, follow these restrictions and guidelines:
For the rule to take effect, do not specify the vpn-instance vpn-instance option.
In a basic ACL, the source source-address source-prefix option specifies an IPv6 multicast group address.
In an advanced ACL, the source source-address source-prefix option specifies an IPv6 multicast source address. The destination dest-address dest-prefix option specifies an IPv6 multicast group address.
To match the following MLD reports, set the source source-address source-prefix option to 0::0:
MLDv1 reports.
MLDv2 IS_EX and MLDv2 TO_EX reports that do not carry multicast source addresses.
Among the other optional parameters, only the fragment keyword and the time-range time-range-name option take effect.
If you execute this command multiple times, the most recent configuration takes effect.
Examples
# Configure an IPv6 multicast group policy on VLAN-interface 100 so that hosts attached to the interface can join only IPv6 multicast group FF03::101.
<Sysname> system-view [Sysname] acl ipv6 basic 2005 [Sysname-acl-ipv6-basic-2005] rule permit source ff03::101 128 [Sysname-acl-ipv6-basic-2005] quit [Sysname] interface vlan-interface 100 [Sysname-Vlan-interface100] mld group-policy 2005