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Ethernet Switch

What is an Ethernet switch?

An Ethernet switch is a network device used to connect multiple Ethernet devices. It can learn and establish a forwarding path based on the MAC address, forward data frames from the source port to the destination port, and achieve fast and reliable transmission of data between different devices.

Ethernet switch functions:

  • Connect multiple Ethernet devices: such as computers, servers, printers, etc.
  • Exchange data frames: Forward data frames to the target device based on the MAC address.
  • Increase network rate: Reduce data conflicts and increase network transmission rate.
  • Isolate broadcast domain: limit the scope of the broadcast domain and improve network security.

Types of Ethernet switches:

  • Classified by working mode: workgroup switches, core switches, access switches, etc.
  • Classified by number of ports: 8 ports, 16 ports, 24 ports, 48 ports, etc.
  • Classified by transmission rate: Gigabit switches, 10G switches, 100M switches, etc.

Applications of Ethernet switches:

  • Home: Used for the establishment of home LAN.
  • Office: used for the establishment of office LAN.
  • Data Center: Network connection for data center.
  • Campus network: used for the construction of campus network.
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FAQ

1. What is the function of an Ethernet switch?

  • Expand the network: Multiple Ethernet devices can be connected together to expand the network scale.
  • Improving performance: It can reduce data conflicts and improve network performance.
  • Enhanced security: Can isolate communications between different VLANs and enhance network security.

2. What are the key points for selecting an Ethernet switch?

  • Choose the appropriate type of Ethernet switch based on the application scenario.
  • Select a switch with an appropriate number of ports based on network size and needs.
  • Choose a switch with an appropriate transmission rate based on network speed requirements.
  • Choose reliable ethernet switch suppliers and products.

3. What are the common problems with Ethernet switches?

  • Port connection issues
  • Link failure problem
  • Loop problem

4. What are the maintenance measures for Ethernet switches?

  • Regularly check port connections
  • Clean dust regularly
  • Check the firmware version regularly

5. What is the future development trend of Ethernet switches?

  • The speed continues to increase
  • Port density continues to increase
  • Continuous improvement of functions

6. How to use Ethernet switch correctly?

  • Connect the network cable correctly
  • Configure VLAN correctly
  • Avoid use in harsh environments

7. What are the relevant standards for Ethernet switches?

  • IEEE 802.3
  • IEEE 802.1Q
  • ITU-T G.802
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