3com 8807 참조 가이드

C

HAPTER

 31: IGMP S

NOOPING

 C

ONFIGURATION

 C

OMMANDS

None

Use the igmp-snooping nonflooding-enable command to enable unknown 
multicast data packets not to be broadcasted within a VLAN.

Use the undo igmp-snooping nonflooding-enable command to disable 
unknown multicast data packets not to be broadcasted within a VLAN.

Note that if IGMP snooping is not enabled on the VLAN (nor Layer 3 multicast), 
unknown multicast packets are broadcasted within the VLAN no matter whether 
this function is enabled or not. To make unknown multicast data packets not be 
broadcasted within the VLAN, you need to enable igmp-snooping in this VLAN 
and enable igmp-snooping nonflooding-enable globally.

By default, unknown multicast data packets are broadcasted within the VLAN.

# Enable multicast packets not to be broadcasted within the VLAN.

<SW8800> system-view

 

System View: return to User View with Ctrl+Z.

 

[SW8800] igmp-snooping nonflooding-enable 

igmp-snooping router-aging-time seconds

System view

seconds: Router port aging time, ranging from 1 to 1000 measured in seconds; By 
default, it is 105.

Use the igmp-snooping router-aging-time command to configure the router 
port aging time of IGMP Snooping.

Use the undo igmp-snooping router-aging-time command to restore the 
default value.

The port here refers to the Ethernet switch port connected to the multicast router. 
The Layer-2 Ethernet switch receives general query packets from the router via this 
port. The timer should be set to about 3.5 times of the general query period of the 
router.

Related command: igmp-snooping and igmp-snooping max-response-time.