ZyXEL GS1510-24 User Guide - Page 74
IGMP Snooping and VLANs
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Chapter 12 IGMP Snooping 12.3.1 IGMP Snooping and VLANs The Switch can perform IGMP snooping on up to 4094 VLANs. You can configure the Switch to automatically learn multicast group membership of any VLANs. The Switch then performs IGMP snooping on the first VLANs that send IGMP packets. This is referred to as auto mode. Alternatively, you can specify the VLANs that IGMP snooping should be performed on. This is referred to as fixed mode. In fixed mode the Switch does not learn multicast group membership of any VLANs other than those explicitly added as an IGMP snooping VLAN. 12.4 General Settings Click Advanced Settings > IGMP Snooping to display the screen as shown. Figure 39 IGMP Snooping The following table describes the labels in this screen. Table 17 IGMP Snooping LABEL DESCRIPTION IGMP Snooping Select Enable to activate IGMP Snooping to forward group multicast State traffic only to ports that are members of that group. Select Disable to disactivate the feature. IGMP Snooping VLAN State Select Add and enter VLANs upon which the Switch is to perform IGMP snooping. The valid range of VLAN IDs is between 1 and 4094. Use a comma (,) or hyphen (-) to specify more than one VLANs. Select Delete and enter VLANs on which to have the Switch not perform IGMP snooping. Unknown Multicast Packets Specify the action to perform when the Switch receives an unknown multicast frame. Select Drop to discard the frame(s). Select Flooding to send the frame(s) to all ports. Apply Click Apply to save your changes to the Switch. Refresh Click Refresh to begin configuring this screen afresh. 74 GS1510 Series User's Guide