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XG2000 series User's Guide
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All Rights Reserved, Copyright (C) PFU LIMITED 2009
4.9.2 Removing Group Members
The group members registered by IGMP snooping are removed under the following status.
z If after receiving an IGMP Report message for group registration, the group member interval expires before the device
receives another IGMP Report message, the switch removes that group member. The default setting for the group
member interval is 260 seconds.
z If an IGMP Leave message is sent from a host, the multicast router sends out an IGMP Specific Query (GSQ)
message to determine that the host has left the group.
If after receiving the IGMP Leave message, the last member query interval expires before the device receives another
IGMP Report message, the switch removes that group member. The default setting for the last member query interval
is 2 seconds.