Ethernet [] is a data network technology for local of data networks (LANs). It makes data exchange in the form of data frameworks between all in a local area network (LAN) for attached devices possible (computer, printer, etc.). Only in its traditional development the LAN extends thereby only over a building. Ethernet technology connects today also devices by far distances.

Ethernet enclosure in different developments definitions for cable types and plugs, describes signaling for the and specifies package formats and minutes. From view of the OSI model specify Ethernet both the physical layer (OSI Layer 1) and the DATA link layer (OSI Layer 2). Ethernet is as far as possible in the IEEE standard 802,3 standardized. It displaced all other LAN standards starting from the 1990ern to the usually-used LAN technology and such as token ring, FDDI and ARCNET. Ethernet knows the basis for network minutes, as TCP/IP, Appletalk or DECnet to e.g. form.

Ethernet with TCP/IP minutes pile

Ethernet with Appletalk minutes pile (EtherTalk)

History

Ethernet was originally developed to Xerox the Palo Alto Research center (PARC). A widespread history means that Ethernet was invented 1973, when Robert Metcalfe wrote a note over the Potenzial of Ethernet his superiors. It led minutes of on the university of Hawaii developed radio-based ALOHAnet off. Therefore also the name Ether (English for "“ether"”, which is after earlier acceptance the medium for the propagation of (radio) waves) Net.Metcalfe says that Ethernet was developed over several years and therefore no time be fastened can. Originally it was thus a firm-specific and not standardized product. This first version of the Ethernet works still with 3 Mbit/s. 1976 published Metcalfe and his assistant David Boggs a paper with the title Ethernet: Distributed pack Switching For local computer Networks.Bob Metcalfe left Xerox 1979 to promote over the use of personnel computers and LANs and created the company 3Com. He convinced to co-operate successfully DEC, Intel and Xerox with him, in order to make Ethernet the standard. Its first Ethernet version 1 was developed further starting from 1980 by institutes the OF Electrical and electronics Engineers IEEE in the working group 802. Originally only one LAN standard for transmission rates between 1 and 20 Mbit/s was planned. Likewise 1980 were added still another so-called "“tokens ACCESS method"”. Starting from 1981 that pursued IEEE then three different techniques: CSMA/CD (802.3), tokens bus (802.4) and token ring (802.5), about which last the two went down soon regarding a true tide of Ethernet products. 3Com became thereby a large enterprise.

The work on the Cheapernet standard (10Base2) was published in June 1983. At the same time the work on the specifications for Ethernet on Broadband (10Broad36) began and for the StarLAN (1Base5). When 1985 the Ethernet standard was published also as international standard ISO/DIS 8802/3, it was supported binnem short by over 100 manufacturing firms. 1986 began some smaller companies with the transmission of data in the Ethernet format on four-wire circuits. Afterwards that strengthened IEEE its activities in the areas Ethernet on Twisted Pair, which 1991 became a standard, as well as Ethernet on glass fiber lines, which led 1992 to the 10BaseF-Standards (F for Fibre Optics). The 100 Mbit/s standard for Ethernet was adopted 1995, about at the same time to the standard for a Wireless LAN with the designation 802.11. In the meantime the work on the 10-Gigabit-Ethernet and on the Ethernet takes city and Campusnetze into the roofridge Mile (EFM) instead of the pure Inhouse enterprise already in the visor.

Articles in category "Ethernet"

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Related Websites

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• Ethernet - Wikipedia, the free encyclopedia
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• Overview of Ethernet by Cisco
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• What is Ethernet - A Word Definition From the Webopedia Computer ...
  This page describes the term Ethernet and lists other pages on the Web where you can find additional information.