D-Link DGS-1248T User Manual page 47

before above timer expires, the Leave message is dropped. Otherwise
the Leave message is either forwarded to the port. Default is 1 second.
To enable IGMP snooping for a given VLAN, select Enable and click
on the Apply button. Then press the Edit button under Router Port
Setting, and select the ports to be assigned for IGMP snooping for the
VLAN, and press Apply for changes to take effect.
Figure 34 – Configuration > IGMP Router port Settings
To view the Multicast Entry Table for a given VLAN, press the View
button.
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