3Com S7902E Command Reference Manual - page 1298
1-8
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] 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] igmp-snooping
[Sysname-igmp-snooping] quit
[Sysname] vlan 2
[Sysname-vlan2] igmp-snooping enable
[Sysname-vlan2] igmp-snooping drop-unknown