Инструкции По Установке для 3com S7906E

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Configurations made in IGMP snooping view are effective for all VLANs, while configurations made 
in VLAN view are effective only for ports belonging to the current VLAN. For a given VLAN, a 
configuration made in IGMP snooping view is effective only if the same configuration is not made in 
VLAN view.  
Configurations made in IGMP snooping view are effective for all ports; configurations made in 
Ethernet interface view are effective only for the current port; configurations made in Layer 2 
aggregate interface view are effect only for the current interface; configurations made in port group 
view are effective only for all the ports in the current port group. For a given port, a configuration 
made in IGMP snooping view is effective only if the same configuration is not made in Ethernet 
interface view, Layer 2 aggregate interface view or port group view.  
For IGMP snooping, configurations made on a Layer 2 aggregate interface do not interfere with 
configurations made on its member ports, nor do they take part in aggregation calculations; 
configurations made on a member port of the aggregate group will not take effect until it leaves the 
aggregate group.  
 
Configuring Basic Functions of IGMP Snooping 
Configuration Prerequisites 
Before configuring the basic functions of IGMP snooping, complete the following task:  
Configure the corresponding VLANs. 
Before configuring the basic functions of IGMP snooping, prepare the following data:  
Version of IGMP snooping. 
Enabling IGMP Snooping 
Follow these steps to enable IGMP snooping: 
To do... 
Use the command... 
Remarks  
Enter system view 
system-view 
— 
Enable IGMP snooping globally and 
enter IGMP-Snooping view  
igmp-snooping 
Required 
Disabled by default  
Return to system view 
quit 
— 
Enter VLAN view 
vlan vlan-id 
— 
Enable IGMP snooping in the VLAN  igmp-snooping enable 
Required 
Disabled by default