R2511-HP MSR Router Series IP Multicast Command Reference(V5)

137
Command MSR900 MSR93X
MSR20
-1
X
MSR20 MSR30 MSR50 MSR1000
drop-unknown Yes. Yes. No. No.
Supported by
the
MSR30-11E or
MSR30-11F
with fixed
switching
interfaces.
Not supported
by the
MSR30-11E or
MSR30-11F
with fixed
switching
interfaces.
Not
supported
by the FIC
modules.
Yes
Examples
# Enable the device to drop unknown multicast data globally.
<Sysname> system-view
[Sysname] igmp-snooping
[Sysname-igmp-snooping] drop-unknown
Related commands
igmp-snooping drop-unknown
fast-leave (IGMP-snooping view)
Use fast-leave to enable fast-leave processing globally. With this function enabled, when an IGMP
snooping-enabled router receives an IGMP leave message on a port, it directly removes that port from the
multicast forwarding entry of the specific group.
Use undo fast-leave to disable fast-leave processing globally.
Syntax
fast-leave [ vlan vlan-list ]
undo fast-leave [ vlan vlan-list ]
Default
Fast-leave processing is disabled.
Views
IGMP-snooping view
Default command level
2: System level
Parameters
vlan vlan-list: Specifies one or multiple VLANs. You can provide up to 10 VLAN lists. For each list, you
can specify an individual VLAN in the form of vlan-id, or a VLAN range in the form of start-vlan-id to
end-vlan-id, where the end VLAN ID must be greater than the start VLAN ID. The value range of a VLAN