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Address Table
The LevelOne 16/24 Port 10/100/1000Mbps Switch with Gigabit option
is implemented with an address table. This address table composed of
many entries. Each entry is used to store the address information of
some node in network, including MAC address, port no, etc. This
information comes from the learning process of Ethernet Switch..
Learning
When one packet comes in from any port. The LevelOne 16/24 Port
10/100/1000Mbps Switch with Gigabit option will record the source
address, port no. and the other related information in address table.
This information will be used to decide either forwarding or filtering for
future packets.
Forwarding & Filtering
When one packet comes from some port of the Ethernet Switching, it
will also check the destination address besides the source address
learning. The Ethernet Switching will lookup the address-table for the
destination address. If not found, this packet will be forwarded to all the
other ports except the port which this packet comes in. And these ports
will transmit this packet to the network it connected. If found, and the
destination address is located at different port from this packet comes
in, the Ethernet Switching will forward this packet to the port where this
destination address is located according to the information from
address table. But, if the destination address is located at the same
port with this packet comes in, then this packet will be filtered. Thereby