What interface attributes are affected after the interface auto-negotiation mode is changed

When the auto-negotiation mode of an interface is changed from auto-negotiation to non-auto-negotiation, the default interface rate and duplex mode are restored. For example, when a GE electrical interface works in auto-negotiation mode, the rate negotiated with the remote interface is 100 Mbit/s and the duplex mode is half-duplex. After the interface is configured to work in non-auto-negotiation mode, the interface rate is restored to 1000 Mbit/s and the duplex mode is full-duplex.

You should change the auto-negotiation mode on both the local and remote interfaces. Otherwise, the interfaces may be Down.

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