What is auto-negotiate?

Auto-negotiate is the ability of a network interface to coordinate its own connection parameters (speed and duplex) with another network interface without human intervention. Auto-negotiate is usually the preferred setting; however, if the negotiation fails, mismatched network interface settings can severely impact network performance. In cases where that condition is unacceptable, you should manually set the network interface settings to a correct configuration.


Note:

If auto-negotiate fails, the attempts to establish a connection at 10BASE-T, half-duplex, which is the lowest common denominator.

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