How does the Auto settings for bandwidth and duplex work on a port?
The Auto setting enables auto-negotiation on the port of the device. When two ports are connected and both have auto-negotiation on, the best connection settings will be determined automatically and the link will be functional. The link will also be functional if one port has auto-negotiation on and the other is set at Half Duplex. However, if the other port is set at Full Duplex, the link will not be functional.