3com S7906E Instruccion De Instalación

 

1-17 

Enter system view 

— 

Enter interface view 

interface interface-type 
interface-number 

— 

Enable the IGMP SSM 
mapping feature 

igmp ssm-mapping enable 

Required 

Disabled by default 

 

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. 

 

By performing this configuration multiple times, you can map a multicast group to different multicast 

sources. 

Follow these steps to configure an IGMP SSM mapping: 

Enter system view 

— 

Enter public instance or 
VPN instance IGMP view 

igmp [ vpn-instance 
vpn-instance-name ] 

— 

Configure an IGMP SSM 
mapping 

ssm-mapping group-address 
{ mask | mask-length } 
source-address 

Required 

No IGMP mappings are 
configured by default. 

 

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 

configuring simulated joining with the igmp-snooping host-join command. In this case, the 

corresponding multicast group will not be created based on the configured IGMP SSM mappings. For 

details about the igmp-snooping host-join command, refer to IGMP Snooping Commands in the IP 

Multicast Volume. 

 

Before configuring the IGMP proxying feature, complete the following tasks: