D-Link DGS-1250 User Manual - Page 111

DGS-1250 Series Gigabit Ethernet Smart Managed Switch Web UI Reference Guide L2 Multicast Control 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. IGMP Snooping Settings In order to use IGMP Snooping it must first be enabled for the entire Switch under IGMP Global Settings at the top of the window. You may then fine-tune the settings for each VLAN by clicking the corresponding Edit button. 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. To view the following window, click L2 Features > L2 Multicast Control > IGMP Snooping > IGMP Snooping Settings, as shown below: Figure 5-46 IGMP Snooping Settings Window The fields that can be configured in Global Settings are described below: Parameter Global State Description Select to globally enable or disable IGMP snooping here. By default, this is disabled. Click the Apply button to accept the changes made. The fields that can be configured in VLAN Status Settings are described below: Parameter VID Description Enter the VLAN ID here. The range is from 1 to 4094. Select to enable or disable IGMP snooping on the VLAN. Click the Apply button to accept the changes made. The fields that can be configured in IGMP Snooping Table are described below: Parameter VID Description Enter the VLAN ID from 1 to 4094. Click the Find button to locate a specific entry based on the information entered. 102