Gigabit Ethernet
Colin K. Mick · Auerbach Publications eBooks · 2020
The initial market for Gigabit Ethernet will be primarily to upgrade network infrastructures by providing high bandwidth links for backbones and server connections. All Gigabit Ethernet signaling systems use some form of Auto-Negotiation to configure both ends of the link for proper operation at start-up. 1000Base-X uses a different form of Auto-Negotiation, developed by the 802.3z task force, to support full-duplex continuous signaling using 8B10B coding over 1.25-GHz links. The 1000Base-X family couples the Ethernet media access control with hardware originally developed for Fibre Channel. Gigabit Ethernet supports two modes of operation: the traditional half-duplex mode which uses carrier sense multiple access with collision detect (CSMA/CD), and a full-duplex mode similar to that provided by Fast Ethernet. The basic Ethernet frame format, CSMA/CD operation, and both the Remote Monitoring and Simple Network Management Protocol MIBs remain virtually unchanged.