2-6
z Before configuring related IGMP Snooping functions, you must enable IGMP Snooping in the
specified VLAN.
z Different multicast group addresses should be configured for different multicast sources because
IGMPv3 Snooping cannot distinguish multicast data from different sources to the same multicast
group.
Configuring Timers
This section describes how to configure the aging timer of the router port, the aging timer of the
multicast member ports,.
Table 2-5 Configure timers
Operation Command Remarks
Enter system view system-view
—
Configure the aging timer of the
router port
igmp-snooping
router-aging-time seconds
Optional
By default, the aging time of the
router port is 105 seconds.
Configure the aging timer of the
multicast member port
igmp-snooping
host-aging-time seconds
Optional
By default, the aging time of
multicast member ports is 260
seconds
Configuring Fast Leave Processing
With fast leave processing enabled, when the switch receives an IGMP leave message on a port, the
switch directly removes that port from the forwarding table entry for the specific group. If only one host is
attached to a port, enable fast leave processing to improve bandwidth management.
Enabling fast leave processing in system view
Table 2-6 Enable fast leave processing in system view
Operation Command Remarks
Enter system view system-view
—
Enable fast leave
processing
igmp-snooping fast-leave
[ vlan vlan-list ]
Required
By default, the fast leave processing
feature is disabled.
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