IGMP Snooping
Internet Group Management Protocol (IGMP) snooping allows the Switch to recognize IGMP queries and reports sent
between network stations or devices and an IGMP host. When enabled for IGMP snooping, the Switch can add or
remove a port to a specific device based on IGMP messages passing through the Switch.
In order to use IGMP Snooping it must first be enabled for the entire Switch (see the DES-3528/DES-3552 S eries
Web Management Tool). You may then fine-tune the settings for each VLAN using the IGMP Snooping link in the L2
Features folder. When enabled for IGMP snooping, the Switch can open or close a port to a specific multicast group
member based on IGMP messages sent from the device to the IGMP host or vice versa. The Switch monitors IGMP
messages and discontinues forwarding multicast packets when there are no longer hosts requesting that they
continue.
IGMP Snooping Settings
Use the IGMP Snooping Settings window to enable or disable IGMP Snooping on the Switch. To modify the settings,
click the Edit button under Parameter Settings and a new table will appear for the user to configure.
To view this window, click L2 Features > IGMP Snooping > IGMP Snooping Settings as shown below:
Figure 3 - 33 IGMP Snooping Settings window
Clicking the Edit button will open the IGMP Snooping Parameters Settings window, shown below:
Figure 3 - 34 IGMP Snooping Parameters Settings - Edit window
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