Planet Technology GSW-2416 - Manual (Page 18)

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3. Switch Operation
3.1 Address Table
The Gigabit Ethernet Switch 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 Gigabit Ethernet Switch.
3.2 Learning
When one packet comes in from any port. The Gigabit Ethernet
Switch 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.
3.3 Forwarding & Filtering
When one packet comes from some port of the Gigabit Ethernet Switch,
it will also check the destination address besides the source address
learning. The Gigabit Ethernet Switch 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 Gigabit Ethernet Switch 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 increasing the network throughput and availability.
3.4 Store-and-Forward
Store-and-Forward is one type of packet-forwarding techniques. A
Store-and Forward Gigabit Ethernet Switch stores the incoming frame in