D-Link DGS-6600-48TS Configuration Guide - Page 400
Multicast Filter Mode Configuration Commands, Multicast Filter mode Introduction
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Volume 7-Multicast / Chapter 37-Multicast Configuration an IGMP group by sending corresponding IGMP Report messages. Multicast Filter Mode Configuration Commands Multicast Filter Mode Configuration Commands Multicast Filter mode Introduction User could decide the unknown multicast packets forwarding rules by configuring the multicast filter mode. The multicast filter mode function is per vlan based in this device. Please see below for its detail description. Forward All Groups - All frames destined for group MAC addresses are forwarded according to the VLAN rules. Forward Unregistered Groups - If the Group MAC address registration entries exist in the Multicast Table, frames destined for that corresponding Group MAC addresses are forwarded, only on ports identified in the member port set. In other words, if the Group MAC Address doesn't exist, the packet will be forwarded according to the VLAN rules. Filter Unregistered Groups - Frames destined for group MAC address are forwarded only if such forwarding is explicitly permitted by a Group Address entry in the Multicast table. In other words, if the Group MAC Address doesn't exist, the packet will be filtered. Configuring Multicast Filtering on an Interface The user can configure the method that the Switch uses for handling unknown multicast packets received on a VLAN interface. Use the following commands to configure and display the handling method used for the unknown multicast packets received on an interface: Command Explanation multicast filtering-mode {forward-all | forward-unregistered | filter-unregistered} Configures the handling method used for any unknown multicast packets received on an interface. show multicast filtering-mode [interface INTERFACE-ID] Displays the handling method used for any unknown multicast packets received on an interface. In the following example, the user configures interface VLAN2 to filter-unregistered multicast packets based on the forwarding table and flood drop all unregistered multicast packets. Finally, the user displays the multicast filtering mode for all VLANs: DGS-6600 Configuration Guide 400