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GigaX3112 Series Layer 3 Managed Switch
Last Member Query Interval:
Without Immediate Leave, when the switch
receives an IGMP leave message from a subscriber on a receiver port, it
sends out an IGMP query on that port and waits for IGMP group membership
reports. If no reports are received in a configured time period, the receiver
port is removed from multicast group membership.
The second part provides the following settings,
Status:
If global snooping is enabled, you can enable or disable VLAN
snooping.
Immediate leave:
When you enable IGMP Immediate-Leave processing, the
switch immediately removes a port when it detects an IGMP version 2 leave
message on that port. You should use the Immediate-Leave feature only
when there is a single host present on every port in the VLAN. Immediate
Leave is supported with only IGMP version 2 hosts.
(However, if the static entries occupy all 256 spaces, the IGMP snoop does
not work normally. The switch only allows 256-layer 2 multicast groups.)
Figure 28. IGMP snooping
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