D-Link xStack DGS-3426, User Manual

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xStack DGS-3400 Series Layer 2 Gigabit Ethernet Managed Switch
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 open or close 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 Device Information ). You may then fine-tune
the settings for each VLAN using the IGMP Snooping Settings 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
To view the IGMP Snooping Settings window, click L2 Features > IGMP Snooping > IGMP Snooping Settings . To modify the
settings, click the Modify button of the VLAN ID you want to change.
Figure 7- 21. IGMP Snooping Settings window
Clicking the Modify button will open the IGMP Snooping Settings window, shown below:
Figure 7- 22. IGMP Snooping Settings –Edit window
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