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Enabling SSM mapping
Step Command
Remarks
1.
Enter system view.
system-view N/A
2.
Enter interface view.
interface
interface-type
interface-number
N/A
3.
Enable the IGMP SSM
mapping feature.
igmp ssm-mapping enable
Disabled
by
default.
NOTE:
To ensure SSM service for all hosts on a subnet, regardless of the IGMP version running on the
hosts, enable IGMPv3 on the interface that forwards multicast traffic onto the subnet.
Configuring SSM mappings
By performing this configuration multiple times, you can map a multicast group to different multicast
sources.
If you configure simulated joining on an IGMPv3-enabled VLAN interface without specifying any
multicast source, the simulated member host still sends IGMPv3 reports. In this case, the
corresponding multicast group will not be created based on the configured IGMP SSM mappings.
For more information about the
igmp-snooping host-join
command, see
IP Multicast Command
Reference
.
To configure an IGMP SSM mapping:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter public network
IGMP view or VPN
instance IGMP view.
igmp
[
vpn-instance
vpn-instance-name
]
N/A
3.
Configure an IGMP
SSM mapping.
ssm-mapping
group-address
{
mask
|
mask-length
}
source-address
No IGMP mappings are
configured by default.
Configuring IGMP proxying
This section describes how to configure IGMP proxying.
Configuration prerequisites
Before you configure the IGMP proxying feature, complete the following tasks:
•
Configure any unicast routing protocol so that all devices in the domain are interoperable at the
network layer.
•
Enable IP multicast routing.
