Systems Switch User Manual

DGS-3024 Gigabit Ethernet Switch Manual
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 on the Switch Information (Advanced Settings)
window (Configuration > Advanced Settings). You may then fine-tune the settings for each VLAN by clicking the IGMP
Snooping link in the Configuration 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 Current IGMP Snooping Group Entries window to view IGMP Snooping settings. To modify the settings, click the
Modify button of the VLAN ID to change.
Figure 7- 11. Current IGMP Snooping Group Entries window
Clicking the Modify button will open the IGMP Snooping Settings window, shown below:
Figure 7- 12. IGMP Snooping Settings window
The following parameters may be viewed or modified:
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