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Auto-negotiation

Auto-negotiation

Auto-negotiatio definition

Auto-negotiation is a feature in computer networks, mainly Ethernet. It lets devices figure out the best way to communicate with each other automatically.

Key points:

  • Speed and data sending. Auto-negotiation helps devices decide how fast they should send data and whether they should use half-duplex or full-duplex.
  • Finding the best setting. When two network devices connect, Auto-negotiation lets them work out the fastest and most efficient way to operate. For example, if one device can handle faster speeds than the other, they’ll settle on the best rate for both.
  • Standard rules. This feature follows specific industry rules. Auto-negotiation ensures that devices from different companies can work together smoothly.
  • The process. Devices share information about what speeds and modes they can handle. They then choose the best settings based on this information.
  • Fixing mismatches. Auto-negotiation also prevents problems that happen when devices are set up incorrectly. It adjusts settings to ensure that the network runs smoothly.
  • Adapting to changes. If a new device is added to the network, auto-negotiation enables the network to adjust itself so it can work smoothly with the new device.
  • Limits. This feature is excellent for Ethernet but doesn’t apply to all networks. Also, sometimes, manual setup might be better than auto-negotiation.

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