Tag: Coaxial cable

HAPPY 40TH ETHERNET!!!!


TODAY MAY 22 MARKS 40 YEARS OF ETHERNET A REMARKABLE TECHNOLOGY THAT MADE NETWORKING SOOO MUCH EASIER

 

Today marks the 40th Anniversary of the Ethernet,A little known innovation that was conceived   Bob Metcalfe at Xerox PARC.

Ethernet revolutionised Networking we know of Today…

Ethernet was commercially introduced in 1980 and standardized in 1985 as IEEE 802.3. Ethernet has largely replaced competing wired LAN technologies.

The Ethernet standards comprise several wiring and signaling variants of the OSI physical layer in use with Ethernet. The original 10BASE5 Ethernet used coaxial cable as a shared medium. Later the coaxial cables were replaced by twisted pair and fiber optic links in conjunction with hubs or switches. Data rates were periodically increased from the original 10 megabits per second to 100 gigabits per second.

Systems communicating over Ethernet divide a stream of data into shorter pieces called frames. Each frame contains source and destination addresses and error-checking data so that damaged data can be detected and re-transmitted. As per the OSI model Ethernet provides services up to and including the data link layer.

Since its commercial release, Ethernet has retained a good degree of compatibility. Features such as the 48-bit MAC address and Ethernet frame format have influenced other networking protocols.

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