Change the aging time for multicast traffic–triggered entries in a VLAN on a CE series switch

If no multicast data is sent to a multicast group, a CE series switch needs to delete matching (S, G) or (*, G) entries. Therefore, the switch needs to periodically detect multicast flows sent to the multicast group to determine whether to delete the matching entries. You can run the multicast layer-2 source-lifetime lifetime command to set the aging time for multicast traffic–triggered entries in a VLAN. If the switch does not receive any multicast data sent from a multicast source to a multicast group within the aging time, the switch deletes the matching (S, G) or (*, G) entries. The deletion allows the switch to update multicast entries and release entry resources in a timely manner.
By default, the aging time of a multicast traffic–triggered entry in a VLAN is 210 seconds. You can set a proper aging time for multicast traffic–triggered entries according to the number of multicast entries used on your network.
In the following example, the aging time of multicast traffic–triggered entries in VLAN 100 is set to 1000 seconds.

<HUAWEI> system-view
[~HUAWEI] igmp snooping enable
[*HUAWEI] vlan 100
[*HUAWEI-vlan100] igmp snooping enable
[*HUAWEI-vlan100] multicast layer-2 source-lifetime 1000
[*HUAWEI-vlan100] commit

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