Ethernet TCP Performance With Arduino

TCP segments are encapsulated in IP packets, which are in turn encapsulated in Ethernet frames.

Have you ever wondered how devices communicate with each other over a network? One of the most popular ways is through Ethernet, which allows data packets to be transmitted between devices in a Local Area Network (LAN).

The size of the Ethernet frame, which is the basic unit of data transmitted over the network, can have a big impact on the network's performance and the behavior of higher-level protocols like IP and TCP. The minimum size of an Ethernet frame is 64 bytes, while the maximum size is 1518 bytes.

IP, or Internet Protocol, is another important protocol that carries data packets across an IP network.

TCP, or Transmission Control Protocol, is a connection-oriented protocol that provides reliable data transmission between devices over a network.

Fortunately, if you're working with an Arduino and the Ethernet Shield with a WIZnet Chip, you don't need to worry too much about all these technical details. You can use the Ethernet library to communicate via TCP through a Socket, which can hold up to 2KB of data by default. However, most examples in the Arduino Ethernet Library don't use this Socket buffer effectively. So, if you want to make the most of your network's performance, check out the modified examples on the EXP-Performance branch of the Github WIZnet-ArduinoEthernet/Ethernet repository.

By using the maximum size of the Ethernet frame for receiving and sending packets, you can send more data at once, which can make your network run faster and more efficiently.

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