D-Link DES-3028 Product Manual - Page 115
IGMP Snooping, Internet Group Management Protocol IGMP, Advanced Settings, Modify, L2 Features
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DES-3028 DES-3028P DES-3028G DES-3052 DES-3052P Layer 2 Fast 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 the 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. 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. Use the IGMP Snooping window to view IGMP Snooping status. To modify settings, click the Modify button for the VLAN Name entry you want to change. To view this window click L2 Features > IGMP Snooping > IGMP Snooping. Use the IGMP Snooping window to view IGMP Snooping settings. To modify the settings, click the Modify button of the VLAN ID you wish to change. Figure 7- 15. IGMP Snooping window Clicking the Modify button will open the IGMP Snooping Settings menu, shown below: Figure 7- 16. IGMP Snooping Settings window The following parameters may be viewed or modified: Parameter Description VLAN ID This is the VLAN ID that, along with the VLAN Name, identifies the VLAN for which to modify 101