Command Manual – Multicast
H3C S7500E Series Ethernet Switches
Chapter 1 IGMP Snooping Configuration Commands
1-4
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