H3C Technologies H3C S10500 Series Switches - Manual (Page 358)

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To do… Use the command… Remarks
Enter system view system-view —
Enter interface view
interface interface-type
interface-number
—
Enable the MLD SSM mapping
feature
mld ssm-mapping enable
Required
Disabled by default.
NOTE:
To ensure SSM service for all hosts on a subnet, regardless of the MLD version running on the hosts, enable
MLDv2 on the interface that forwards IPv6 multicast traffic onto the subnet.
Configuring MLD SSM mappings
By performing this configuration multiple times, you can map an IPv6 multicast group to different IPv6
multicast sources.
Follow these steps to configure an MLD SSM mapping:
To do… Use the command… Remarks
Enter system view system-view —
Enter MLD view mld —
Configure an MLD SSM mapping
ssm-mapping ipv6-group-address
prefix-length ipv6-source-address
Required
No MLD mappings are configured
by default.
CAUTION:
If MLDv2 is enabled on a VLAN interface of a switch, and if a port in that VLAN is configured as a
simulated host, the simulated host will send MLDv2 reports even if you did not specify an IPv6 multicast
source when configuring simulated joining with the mld-snooping host-join command. In this case, the
corresponding IPv6 multicast group will not be created based on the configured MLD SSM mappings. For
more information about the mld-snooping host-join command, see
IP Multicast Command Reference.
Configuring MLD proxying
Configuration prerequisites
Before you configure the MLD proxying feature, complete the following tasks:
• Enable IPv6 forwarding and configure an IPv6 unicast routing protocol so that all devices in the
domain are interoperable at the network layer
• Enable IPv6 multicast routing
Enabling MLD proxying
You can enable MLD proxying on the interface in the direction toward the root of the multicast forwarding
tree to make the device serve as an MLD proxy.