H3C S7500 Series Ethernet Switches Command Manual

Table Of Contents
Command Manual – Multicast
H3C S7500 Series Ethernet Switches
Chapter 2 IGMP Snooping Configuration
Commands
2-5
Use the igmp-snooping disable command to disable the IGMP Snooping feature.
By default, the IGMP Snooping feature is disabled.
Examples
# Enable the IGMP Snooping feature on the switch.
<H3C> system-view
System View: return to User View with Ctrl+Z.
[H3C] igmp-snooping enable
Enable IGMP-Snooping ok.
2.1.6 igmp-snooping fast-leave
Syntax
igmp-snooping fast-leave [ vlan vlan-list ]
undo igmp-snooping fast-leave [ vlan vlan-list ]
View
System view, Ethernet port view
Parameters
vlan-list: Multiple VLANs in the form of vlan-list = { vlan-id [ to vlan-id ] } & < 1-10 >. The
vlan-id argument is the ID of a VLAN, in the range of 1 to 4094. &<1-10> means that
you can provide this argument repeatedly for up to ten times.
Description
Use the igmp-snooping fast-leave command to enable the IGMP fast leave feature.
Use the undo igmp-snooping fast-leave command to disable the IGMP fast leave
feature.
By default, the IGMP fast leave feature is disabled.
Normally, when a port receives an IGMP Leave message, the IGMP Snooping-enabled
switch does not immediately remove the port from the multicast group, but sends a
group-specific query message. If no response is received in a given period, it then
removes the port from the multicast group.
If this command is executed, when a port receives an IGMP Leave message, the IGMP
Snooping-enabled switch directly removes the port from the multicast group. When the
port has only one user, the IGMP fast leave feature can save bandwidth.