Netgear GS752TP - 52PT GE POE SMART SWITCH Guia Do Administrador

Multicast IP traffic is traffic that is destined to a host group. The class D addresses identify the 
host groups for IPv4 multicast, which range from 224.0.0.0 to 239.255.255.255. The prefix 
ff00::/8 identifies the host groups for IPv6 multicast.

From the Multicast menu, you can access features described in the following sections:

The switch uses the Layer 2 Multicast Forwarding Database (MFDB) to make forwarding 
decisions for packets that arrive with a multicast destination MAC address. By limiting 
multicast transmissions only to certain ports in the switch, traffic is prevented from going to 
parts of the network where that traffic is unnecessary.

When a packet enters the switch, the destination MAC address is combined with the VLAN 
ID, and a search is performed in the Layer 2 Multicast Forwarding Database. If no match is 
found, the packet is either flooded to all ports in the VLAN or discarded, depending on the 
switch configuration. If a match is found, the packet is forwarded only to the ports that are 
members of that multicast group.

Use the MFDB Table to view the port membership information for all active Multicast address 
entries. The key for an entry consists of a MAC address. Entries can contain data for more 
than one protocol.

From the MFBD link, you can access the following screens:

The Multicast Forwarding Database (MFDB) holds the port membership information for all 
active multicast address entries. 

The key for an entry consists of a VLAN ID and MAC address pair. Entries can contain data 
for more than one protocol.

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Select Switching

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 MFDB Table.