H3C Technologies H3C S12500 Series Switches - Manual (Page 112)

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Step Command Remarks
3. Enable the IGMP host
tracking function globally.
host-tracking Disabled by default.
Enabling the IGMP host tracking function on an interface
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 host
tracking function on the
interface. igmp host-tracking Disabled by default.
Configuring IGMP SSM mapping
Due to some possible restrictions, some receiver hosts on an SSM network might run IGMPv1 or IGMPv2.
To provide SSM service support for these receiver hosts, configure the IGMP mapping feature on the last
hop router.
Before you configure the IGMP SSM mapping feature, complete the following tasks:
• Configure any unicast routing protocol so that all devices in the domain are interoperable at the
network layer.
• Configure basic IGMP functions.
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.
IMPORTANT:
To make ensure SSM service can be provided 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 IGMPv3 is enabled on a VLAN interface, and if a port in that VLAN is configured as a simulated host,
the simulated host will send IGMPv3 reports even if you did not specify a multicast source when you