D-Link DES-3624 - Switch - Stackable User manual - page 174
Manual is about: Stackable NWay Ethernet
Switch
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Stackable NWay Ethernet Switch User’s Guide
IGMP Settings
Figure 7-17. Configure IGMP window
To configure the IGMP, enter a value between 30 and 999
seconds in the IP Multicast Filtering Age-out Timer field and
then change the IP Multicast Filtering (IGMP Snooping)
setting from Disabled to Enabled. Click the Apply button to let
the changes take effect.
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