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Local Area High Speed Networks by Dr. Sidnie Feit

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Features of Gigabit Ethernet

There are some characteristics that all of the gigabit implementations share in common:

  • On initialization or reset, a gigabit interface performs an Auto-Negotiation procedure with its link partner to establish the ground rules for communication.

  • After initialization, at the physical level, signals are transmitted concurrently in both directions on a continuous basis.

These features are described in the sections that follow.

Auto-Negotiation

All the gigabit technologies support the exchange of link parameters using an Auto-Negotiation Protocol. The following is true of Auto-Negotiation:

  • It confirms that both ends of the link can operate at 1000Mbps.

  • It enables each interface to announce whether it wishes to operate ...

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