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December 22, 2020 What is Ethernet?

What is Ethernet?

Ethernet is the traditional technology used to connect devices in a wired Local Area Network (LAN) or Wide Area Network (WAN), enabling them to communicate with each other through a protocol which is a set of rules or common network language. Ethernet describes how network devices format and transmit data, so that other devices on the same local area network or campus network can identify, receive, and process information. Ethernet cables are the physical, enclosed wiring on which data passes.

Accessing geolocation network connected devices via cable may use Ethernet, that is, via a wired connection rather than a wireless connection. A wide variety of users, from enterprises to gamers, end up choosing Ethernet, depending on its connection advantages which include reliability and security.

Compared with Wireless Local Area Network (WLAN) technology, Ethernet is generally less susceptible to disruption. Since serial devices must be connected using physical cables, it can also provide a higher level of network security and control than wireless technology, which makes it difficult for outsiders to access network data or hijack the bandwidth of unauthorized devices.

 

What is Ethernet and Why do we use Ethernet?

The serial server is used to connect devices in the network, and it is still a popular form of network connection. For local networks used by specific organizations, such as corporate offices, school campuses, and hospitals, Ethernet is used for its high speed, security, and reliability.

Compared with competing technologies of the time, such as IBM's Token Ring, Ethernet was initially popular because of its low price. With the advancement of network technology, Ethernet continues to develop and provide higher levels of performance, while maintaining backward compatibility, thus ensuring the continued popularity of Ethernet. The initial throughput of Ethernet at 10 megabits per second increased tenfold in the mid-1990s to 100 Mbps, and the Institute of Electrical and Electronics Engineers (IEEE) continues to update its performance. The current version of Ethernet can support operations up to 400 gigabits per second (Gbps).

 

Advantages of Ethernet Connection

  • Relatively low cost;
  • Backward compatibility;
  • General noise resistance;
  • Good data transmission quality;
  • Fast speed;
  • High reliability and high data security.

 

Disadvantages of Ethernet Connection

  • It is suitable for smaller and shorter distance networks;
  • Limited liquidity;
  • Using long cables will cause crosstalk;
  • It is not suitable for real-time or interactive applications;
  • Increased traffic reduces the Ethernet speed;
  • The receiver does not confirm the receipt of the packet;
  • When troubleshooting, it is difficult to track the specific cable or node that caused the problem.

 

What is Ethernet and what is WiFi?

Wi-fi is the most popular type of network connection. Unlike wired connection types, such as Ethernet, Wi-fi does not require a physical cable to be connected. Data is transmitted by wireless signals.

 

What is the Difference between Ethernet and WiFi?

Ethernet connection

  • Data transmission via cable;
  • Limited mobility: physical cables are required;
  • Higher speed, reliability and security than Wi-Fi;
  • Consistent speed;
  • No data encryption is required;
  • Lower latency;
  • More complicated installation process.

 

Wi-Fi connection

  • Transmit data through wireless signals instead of cables;
  • Better mobility because no cables are needed;
  • Not as fast, reliable or secure as Ethernet;
  • More convenient: users can connect to the network from anywhere;
  • Inconsistent speed: Wi-Fi is susceptible to signal interference;
  • Data encryption is required;
  • Higher latency than Ethernet;
  • Simpler installation process.

 

How does Ethernet Work?

The IEEE is specified in a series of standards known as IEEE 802.3. The Ethernet protocol simultaneously involves both layer 1 (physical layer) and layer 2 (data link layer) over the Open Systems Interconnection (OSI) network protocol model.

Ethernet defines two transmission units: the data packet and frame. The frame includes not only the payload of the data being transmitted, but also the following:

  • The physical Media Access Control (MAC) address of the sender and receiver;
  • Virtual Local Area Network (VLAN) marking and Quality of Service (QoS) information; Error correction information to detect transmission problems;
  • Each frame is packed in a data packet containing several bytes of information to establish a connection and mark the starting position of the frame.
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