2-12 
 
 
z  If the function of dropping unknown multicast packets or the XRN fabric function is enabled, you 
cannot enable the IGMP Snooping non-flooding function. 
z  The IGMP Snooping non-flooding function and the multicast source port suppression function 
cannot take effect at the same time. If both are configured, only the multicast source port 
suppression function takes effect.  
 
Related commands: unknown-multicast  drop  enable,  multicast-source-deny,  display 
multicast-source-deny 
Examples 
# Enable IGMP Snooping non-flooding after you enable IGMP Snooping globally and disable both port 
stacking and unknown-multicast dropping. 
<Sysname> system-view 
System View: return to User View with Ctrl+Z. 
[Sysname] igmp-snooping enable 
[Sysname] igmp-snooping nonflooding-enable 
igmp-snooping querier 
Syntax 
igmp-snooping querier 
undo igmp-snooping querier 
View 
VLAN view 
Parameters 
None 
Description 
Use the igmp-snooping querier command to enable the IGMP Snooping querier feature on the 
current VLAN.  
Use the undo igmp-snooping querier command to restore the default.  
By default, the IGMP Snooping querier feature is disabled.  
This command takes effect only if IGMP Snooping is enabled globally and also enabled in the current 
VLAN.  
Related commands: igmp-snooping enable,  igmp-snooping query-interval,  igmp-snooping 
general-query source-ip 
Examples 
# Enable the IGMP Snooping querier in VLAN 3.