|The Unix and Internet Fundamentals HOWTO, by Eric Raymond|
|Ethernet IEEE 802.3 tutorial||Search for a title, author or keyword|
Ethernet IEEE 802.3 tutorial
Ethernet IEEE 802.3 tutorial, an overview or tutorial of Ethernet, IEEE802.3 used widely for local area network, LAN applications. The Ethernet standard was first developed by the Xerox Corporation as an experimental coaxial cable based system in the 1970s. Using a Carrier Sense Multiple Access / Collision Detect ( CSMA/CD ) protocol to allow multiple users it was intended for use with LANs that were likely to experience sporadic use with occasional heavy use. The success of the original Ethernet project lead to a joint development of a 10 Mbps standard in 1980. This time three companies were involved: Digital Equipment Corporation, Intel and Xerox. The Ethernet Version 1 specification that arose from this development formed the basis for the first IEEE 802.3 standard that was approved in 1983, and finally published as an official standard in 1985. Since these first standards were written and approved, a number of revisions have been undertaken to update the Ethernet standard and keep it in line with the latest technologies that are becoming available. The Ethernet IEEE 802.3 LAN can be considered to consist of two main elements: Interconnecting media ( Coaxial cable, Twisted Pair Cables, Fibre optic cable ), Network nodes. The network nodes are the points to and from which the communication takes place. The network nodes also fall into categories: Data Terminal Equipment - DTE ( devices such as PCs, file servers, print servers and the like fall into this category ) and Data Communications Equipment - DCE ( devices that fall into this category receive and forward the data frames across the network, and they may often be referred to as 'Intermediate Network Devices' or Intermediate Nodes: repeaters, routers, switches or even modems and other communications interface units ). There are several network topologies that can be used for Ethernet communications: Point to point ( the simplest configuration as only two network units are used ); Coaxial bus ( where the network units were located along the length of the cable. The segment lengths were limited to a maximum of 500 metres, and it was possible to place up to 1024 DTEs along its length ); Star network ( a central network unit, which may be what is termed a multi-port repeater or hub, or a network switch. All the connections to other nodes radiate out from this and are point to point links ). This manual is offered by Radio-Electronics.com, operated and owned by Adrio Communications Ltd and edited by Ian Poole.
|Ethernet IEEE 802.3 tutorial||Disclaimer: this link points to content provided by other sites.|