Media Converter Operation; Learning; Forwarding & Filtering; Store-And-Forward - Planet IFT-802T User Manual

4. Media Converter Operation

4.1 Learning

When one packet comes in from any port, the Industrial Media
Converter will record the source address, port number and the
other related information in the address table. This information
will be used to decide whether forwarding or filtering is for
future packets.
4.2 Forwarding & Filtering
When one packet comes from a port of the Industrial Media
Converter, it will also check the destination address besides
the source address learning. The Industrial Media Converter
will look up 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 a different port from
this packet comes in, the Industrial Media Converter 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

4.3 Store-and-Forward

Store-and-Forward is one type of packet-forwarding techniques.
A Store-and-Forward Industrial Media Converter stores the
incoming frame in an internal buffer and does the complete
error checking before transmission. Therefore, no error packets
occur. it is the best choice when a network needs efficiency and
stability.
22