xStack
®
DGS-3600 Series Layer 3 Managed Gigabit Ethernet 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 an IGMP message passing through the Switch.
In order to use IGMP snooping, it must first be enabled for the entire Switch (see the DGS-3600 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 view IGMP snooping configurations.
To view this window, click L2 Features > IGMP Snooping > IGMP Snooping Settings, as shown below:
Figure 3- 30. IGMP Snooping Settings window
Clicking the Modify button will open the IGMP Snooping Settings – Edit window, shown below:
115
