TP-Link TL-SG1016PE Easy Smart Switch User Guide - Page 28
IGMP Snooping
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Speed/Duplex: Flow Control: Select the Speed and Duplex mode for the port. The device connected to the switch should be in the same Speed and Duplex mode with the switch. Available field values are "Auto", "10M HD", "10M FD", "100M HD", "100M FD" and "1000M FD". "HD" stands for Half-Duplex and "FD" stands for Full-Duplex. "Auto" means auto negotiation. Allows you to On/Off the Flow Control feature. When "On" is selected, the switch can synchronize the speed with its peer to avoid the packet loss caused by congestion. Note: The switch cannot be managed through the disabled port. Please enable the port which is used to manage the switch. 5.2 IGMP Snooping Internet Group Management Protocol (IGMP) snooping is a multicast control mechanism, which can be used on the switch for dynamic registration of the multicast group. IGMP Snooping allows the switch to recognize the IGMP messages transmitted between network stations or devices and an IGMP host. When receiving IGMP report message from the IGMP host, the switch will add the port to the multicast address table; when listening to IGMP leave message from the IGMP host, the switch will remove the port from the multicast address table. By managing and controlling the multicast address table, the broadcasting of multicast traffic can be effectively prevented in the network. On this page you can enable IGMP Snooping feature, Report Message Suppression feature and view the current IGMP Group information. Choose the menu Switching→IGMP Snooping to load the following page. Figure 5-2 IGMP Snooping The following entries are displayed on this screen: IGMP Snooping IGMP Snooping: Report Message Suppression: Enable or disable IGMP snooping function globally on the switch. Enable or disable Report Message Suppression function globally. If this function is enabled, the first Report Message from the listener will forward to the router ports while the subsequent Report Message will be suppressed to reduce the IGMP packets. 21