Table of Contents
Advertisement
GS108T and GS110TP Smart Switch Software Administration Manual
•
Click Refresh to reload the page and display the most current information.
Multicast Forwarding Database Table
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.
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 Multicast IGMP Snooping MFDB
Table.
Figure 3-30
Configuring Switching Information
3-45
v1.0, April 2010
Hide quick links:
Advertisement
Table of Contents
