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xStack DES-3800 Series Layer 3 Stackable Fast Ethernet Managed Switch
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IGMP
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 the DES-3800 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
Use the L2 Features > IGMP Snooping > IGMP Snooping Settings to view configurations. To modify the settings, click the
Modify button of the VLAN ID to change.
Figure 7- 19. IGMP Snooping Settings window
Clicking the Modify button will open the IGMP Snooping Settings window, shown below:
Figure 7- 20. IGMP Snooping Settings-Edit window
The following parameters may be viewed or modified: