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3com S7906E Guide De Référence

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send-router-alert (IGMP view) 
Syntax 
send-router-alert 
undo send-router-alert 
View 
Public instance IGMP view, VPN instance IGMP view  
Default Level 
2: System level 
Parameters 
None 
Description 
Use the send-router-alert command to globally enable insertion of the Router-Alert option into IGMP 
messages to be sent.  
Use the undo send-router-alert command to globally disable insertion of the Router-Alert option into 
IGMP messages to be sent.  
By default, an IGMP message carries the Router-Alert option.  
Related commands: igmp send-router-alert, require-router-alert.  
Examples 
# Globally disable the insertion of the Router-Alert option in IGMP messages to be sent in the public 
instance.  
<Sysname> system-view 
[Sysname] igmp 
[Sysname-igmp] undo send-router-alert 
ssm-mapping (IGMP view) 
Syntax 
ssm-mapping group-address { mask | mask-length } source-address 
undo ssm-mapping { group-address { mask | mask-length } source-address | all } 
View 
Public instance IGMP view, VPN instance IGMP view 
Default Level 
2: System level 
Parameters 
group-address: Specifies a multicast group by its IP address, in the range of 224.0.0.0 to 
239.255.255.255. 
mask: Subnet mask of the multicast group address.