H3C S3100 Series Command Manual page 334

Command Manual (For Soliton) – Multicast
H3C S3100 Series Ethernet Switches
View
System view, Ethernet port view
Parameters
vlan vlan-list: Specifies a VLAN list. With the vlan-list argument, you can provide one or
more individual VLAN IDs (in the form of vlan-id) and/or one or more VLAN ID ranges
(in the form of vlan-id1 to vlan-id2, where vlan-id2 must be greater than vlan-id1). The
effective range for a VLAN ID is 1 to 4094 and the total number of individual VLANs plus
VLAN ranges cannot exceed 10.
Description
Use the igmp-snooping fast-leave command to enable IGMP fast leave processing.
Use the undo igmp-snooping fast-leave command to disable IGMP fast leave
processing.
By default, IGMP fast leave processing is disabled.
Note:
The fast leave processing function works for a port only if the host attached to the
port runs IGMPv2 or IGMPv3.
The configuration performed in system view takes effect on all ports of the switch if
no VLAN is specified; if one or more VLANs are specified, the configuration takes
effect on all ports in the specified VLAN(s).
The configuration performed in Ethernet port view takes effect on the port no matter
which VLAN it belongs to if no VLAN is specified; if one or more VLANs are specified,
the configuration takes effect on the port only if the port belongs to the specified
VLAN(s).
If fast leave processing and unknown multicast packet dropping or non-flooding are
enabled on a port to which more than one host is connected, when one host leaves
a multicast group, the other hosts connected to port and interested in the same
multicast group will fail to receive multicast data for that group.
Examples
# Enable IGMP fast leave processing on Ethernet 1/0/1 in VLAN 2.
<Sysname>system-view
System View: return to User View with Ctrl+Z.
[Sysname] interface Ethernet 1/0/1
[Sysname-Ethernet1/0/1] igmp-snooping fast-leave vlan 2
Chapter 1 IGMP Snooping Configuration
1-6
Commands