H3C S7500E Series Command Manual page 727

Command Manual – Multicast
H3C S7500E Series Ethernet Switches
1.1.3 drop-unknown
Syntax
drop-unknown
undo drop-unknown
View
IGMP-Snooping view
Parameters
None
Description
Use the drop-unknown command to enable globally the function of dropping unknown
multicast data.
Use the undo drop-unknown command to disable globally the function of dropping
unknown multicast data.
By default, this function is disabled, that is, unknown multicast data is flooded.
This command works only on an IGMP Snooping–enabled VLAN, but not on a VLAN
with IGMP enabled on the corresponding VLAN interface.
Related commands: igmp-snooping drop-unknown.
Examples
# Globally enable the device to drop unknown multicast data.
<Sysname> system-view
[Sysname] igmp-snooping
[Sysname-igmp-snooping] drop-unknown
1.1.4 fast-leave
Syntax
fast-leave [ vlan vlan-list ]
undo fast-leave [ vlan vlan-list ]
View
IGMP-Snooping view
Parameters
vlan vlan-list: Defines one or multiple VLANs. You can provide up to 10 VLAN lists, by
each of which you can specify an individual VLAN in the form of vlan-id, or a VLAN
Chapter 1 IGMP Snooping Configuration Commands
1-4