R2511-HP MSR Router Series IP Multicast Configuration Guide(V5)

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Configuration prerequisites
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
To ensure SSM service for all hosts on a subnet, enable IGMPv3 on the interface that forwards multicast
traffic onto the subnet, regardless of the IGMP version running on the hosts.
To enable the IGMP SSM mapping feature:
Ste
p
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.
Configuring SSM mappings
By performing this configuration multiple times, you can map a multicast group to different multicast
sources.
On a device that supports both IGMP snooping and IGMP, if you configure simulated joining on an
IGMPv3-enabled VLAN interface without specify 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:
Ste
p
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.