D-Link DES-3228PA Installation Guide - Page 152
Configuring Multicast Forwarding
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DES-3228PA Embedded Web System User Guide Section 14. Configuring Multicast Forwarding Multicast forwarding allows a single packet to be forwarded to multiple destinations. L2 Multicast service is based on L2 switch receiving a single packet addressed to a specific multicast address. Multicast forwarding creates copies of the packet, and transmits the packets to the relevant ports. Registered Multicast traffic - If traffic addressed to a registered multicast group is seen it is handled by an entry in the Multicast Filtering Database and forwarded only to the registered ports. Unregistered Multicast traffic - If traffic addressed to an unregistered multicast group is seen it is handled by a special entry in the Multicast Filtering Database. The default setting of this is to flood all such traffic (traffic in unregistered multicast groups). The device supports: Forwarding L2 Multicast Packets - Enabled by default, and not configurable by user. The system supports multicast filtering for multicast groups. Filtering L2 Multicast Packets - Enables forwarding of Layer 2 packets to interfaces. If Multicast filtering is disabled, Multicast packets are flooded to all relevant ports. This section contains the following topics: • Defining IGMP Snooping • Defining Multicast Bridging Groups • Defining Multicast Forward All Settings Page 149