Product Manual

DES-3526 / DES-3526DC Fast Ethernet Layer 2 Switch
Click Apply to implement changes made.
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 Advanced Settings).
You may then fine-tune the settings for each VLAN using 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 you want to change.
Figure 6- 14. Current IGMP Snooping Group Entries window
Clicking the Modify button will open the IGMP Snooping Settings window, shown below:
41