Repotec RP-1716RT, Руководство пользователя

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4. Switch Operation
4.1 MAC Address Table and Learning
The switch is implemented with a MAC address table where is composed of many
entries. Each entry is used to store the address information of network nodes on the
network, including MAC address, port ID, etc. The information is the most important
base to do packet filtering and forwarding.
When one packet comes in from any port, the switch will learn the source address,
port ID, and the other related information in address table. Therefore, the content of
the MAC table will update dynamically.
4.2 Filtering and Forwarding
When one packet comes in from any port of the switch, it will check the destination
address besides the source address learning. The switch 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 where this packet comes in. If found, and the
destination address is located at different port from this packet comes in, the packet
will be forwarded to the port where this destination address is located according to
the information of address table. But, if the destination address is located at the
same port as this packet comes in then this packet will be filtered.
4.3 Store and Forward
Store-and-forward is one kind of packet-forwarding methodology. As a
store-and-forward switch, it will store the complete packet in the internal buffer and
do the complete error checking before transmitting to the network. Therefore, no
error packets will disturb the network. It is the best choice when a network needs
efficiency and stability.