What is Ethernet?
Ethernet was originally developed by XEROX Corporation. Due to the using of DEC, INTEL and XEROX together, Ethernet was configured in 1980 and adapted by IEEE as 802.3 standard afterwards. The basic feature of Ethernet is to adopt a kind of shared access plan called CSMA/CD (Carrier Sense Multiple Access/Collision Detection), that is, multi workstations connect on a central line and all workstations send monitoring signals ceaselessly to the central line. However, only one workstation can transmit signals on the line at one time and the others must wait for starting their own transmission until that workstation finishes.
Ethernet is a standard communications protocol embedded in software and hardware devices, intended for building a local area network (LAN). Ethernet was designed by Bob Metcalfe in 1973, and through the efforts of Digital, Intel and Xerox (for which Metcalfe worked), “DIX” Ethernet became the standard model for LANs worldwide. A basic hard-wired LAN consists of the following components: • Two or more computers to be linked together, or networked. • A network interface card (NIC) in each computer. • Ethernet cable to connect to each computer. • A networking switch or networking hub to direct network traffic. • Networking software. A NIC is installed in each computer, and is assigned a unique address. An Ethernet cable runs from each NIC to the central switch or hub. The switch or hub will act as a relay (though they have significant differences in how they handle network traffic), receiving and directing packets of data across the LAN. Thus, Ethernet networking creates a communications
Ethernet (the name commonly used for IEEE 802.3 CSMA/CD) is the dominant cabling and low level data delivery technology used in local area networks (LANs). First developed in the 1970s, it was published as an open standard by DEC, Intel, and Xerox (or DIX), and later described as a formal standard by the IEEE. Following are some Ethernet features: • Ethernet transmits data at up to ten million bits per second (10Mbps). Fast Ethernet supports up to 100Mbps and Gigabit Ethernet supports up to 1000Mbps. Many buildings on the Indiana University campus are wired with Fast Ethernet and the campus backbone is Gigabit Ethernet. • Ethernet supports networks built with twisted-pair (10BaseT), thin and thick coaxial (10Base2 and 10Base5, respectively), and fiber-optic (10BaseF) cabling. Fast Ethernets can be built with twisted-pair (100BaseT) and fiber-optic (100BaseF) cabling. Currently, 10BaseT Ethernets are the most common. • Data is transmitted over the network in discrete packets (frames) wh
