3Com S7906E - Switch, Configuration Manual

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Configuring MLD SSM Mapping
Due to some possible restrictions, some receiver hosts on an SSM network may run MLDv1. To provide
SSM service support for these receiver hosts, you need to configure the MLD SSM mapping feature on
the last hop router.
Configuration Prerequisites
Before configuring the MLD SSM mapping feature, complete the following tasks:
z
Configure any IPv6 unicast routing protocol so that all devices in the domain can be interoperable
at the network layer.
z
Configure MLD basic functions
Enabling MLD SSM Mapping
Follow these steps to enable the MLD SSM mapping feature:
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
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.