IFT-80x Series User Manual
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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 no. And the other
related information in address table. This information will be
used to decide either forwarding or ltering for future packets.
4.2 Forwarding & Filtering
When one packet comes from some port of the Industrial Media
Converter, it will also check the destination address besides
the source address learning. The Industrial Media Converter
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 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 ltered. 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, do the complete error
checking before transmission. Therefore, no error packets
occurrence, it is the best choice when a network needs efciency
and stability.