Igmp-Snooping Drop-Unknown - 3Com S7906E Command Reference Manual

Use the undo igmp-snooping command to disable IGMP Snooping globally.
By default, IGMP Snooping is disabled.
Related commands: igmp-snooping enable.
Examples
# Enable IGMP Snooping globally and enter IGMP-Snooping view.
<Sysname> system-view
[Sysname] igmp-snooping
[Sysname-igmp-snooping]

igmp-snooping drop-unknown

Syntax
igmp-snooping drop-unknown
undo igmp-snooping drop-unknown
View
VLAN view
Default Level
2: System level
Parameters
None
Description
Use the igmp-snooping drop-unknown command to enable the function of dropping unknown
multicast data in the current VLAN, so that such multicast data will only be forwarded to router ports.
Use the undo igmp-snooping drop-unknown command to disable the function of dropping unknown
multicast data in the current VLAN.
By default, this function is disabled, that is, unknown multicast data is flooded.
This command takes effect only if IGMP Snooping is enabled in the VLAN.
Related commands: igmp-snooping enable and drop-unknown.
Examples
# In VLAN 2, enable IGMP Snooping and the function of dropping unknown multicast data.
<Sysname> system-view
[Sysname] igmp-snooping
[Sysname-igmp-snooping] quit
[Sysname] vlan 2
[Sysname-vlan2] igmp-snooping enable
[Sysname-vlan2] igmp-snooping drop-unknown
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