Auto-Negotiation

A key feature of the Sun eri FastEthernet driver is auto-negotiation. The auto-negotiation protocol, as specified by the 100BASE-T IEEE 802.3u Ethernet Standard, selects the operation mode (half-duplex or full-duplex), and the auto-sensing protocol selects the speed (10 Mbps or 100 Mbps) for the adapter. Further information can be found in Appendix A, Appendix A, Auto-Negotiation.