Netgear GS752TPS(B) - ProSAFE 48-Port Gigabit Stackable Smart Switch with PoE and 4 SFP uplinks Guía Del Software

Multicast

Multicast IP traffic is traffic that is destined to a host group. Host groups are identified by 
class

 

D IP addresses, which range from 224.0.0.0 to 239.255.255.255. 

From the Multicast link, you can access the following pages:

MFDB

The Layer 2 Multicast Forwarding Database (MFDB) is used by the switch to make 
forwarding decisions for packets that arrive with a multicast destination MAC address. By 
limiting multicasts to only 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, then the packet is either flooded to all ports in the VLAN or discarded, depending on 
the switch configuration. If a match is found, then the packet is forwarded only to the ports 
that are members of that multicast group.

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

To access the MFDB Table page, click Switching

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 MFDB Table.