In 1988 Apple had released MacTCP, a system that allowed the Mac to support TCP / IP on machines with suitable Ethernet hardware.

An Ethernet adapter card for the IBM PC was released in 1982 and by 1985, 3Com had sold 100, 000.

The 500 series featured DSTN ( 520 ) or active-matrix LCD displays ( 540 and 550 ), stereo speakers, and was the first computer to use a trackpad ( although a similar technology had been included on the pioneering Gavilan SC 11 years earlier ); it was also the first portable computer to offer built-in Ethernet networking.

The design goals were to avoid the radio frequency radiation emitted at the higher frequencies required by Fast Ethernet and to leverage existing wiring installations of Category 3 cabling that most organizations had recently installed to support 10 megabit twisted-pair Ethernet.

Fast Ethernet switches were not commonplace at first because of high cost and limited availability so, initially, 100VG had a significant performance advantage.

As was the case with most other high-speed buses, Ethernet segments had to be terminated with a resistor at each end.

* The LaserWriter IIg had the capabilities of the IIf, and was also the first LaserWriter with a built-in Ethernet network interface.

ARCNET was less expensive than either, more reliable, more flexible, and by the late 1980s it had a market share about equal to that of Ethernet.

However, by the time ARCnet Plus products were ready for the market, Ethernet had captured the majority of the network market, and there was little incentive for users to move back to ARCnet.

Another significant advantage ARCNET had over Ethernet was cable distance.

ARCNET had the disadvantage of requiring either an active or passive hub between nodes if there were more than two nodes in the network, while thin Ethernet allowed nodes to be spaced anywhere along the linear coax cable.

Here it had little better luck, competing against SCI on one hand, and ever-faster versions of Ethernet on the other.

These machines had onboard and external SCSI ( from the custom MESH IC ), ADB, 10BASE-T Ethernet, two MiniDIN-8 serial ports, and onboard ATI graphics ( originally IIc, later updated to Pro and then Rage Pro Turbo ) with a slot for VRAM upgrade.

By the mid-1990s AUI had all but disappeared as fast Ethernet became more common ( fast Ethernet has an equivalent known as Media Independent Interface, MII ).

Numerous non-standard schemes had been used prior to PoE standardization to provide power over Ethernet cabling.

PERQ 1s also had a spare Optional I / O ( OIO ) board slot for additional interfaces such as Ethernet.

The initial MIO interface card had Ethernet and Token Ring physical layer variants and used various networking protocols over an AUI / BNC connection.

The box also had USB and Ethernet ports, although these were not activated in the last release of the firmware.

It came with a PCMCIA interface card which had a 10 / 100 Ethernet port and an external IDE hard drive enclosure ( as there is no room inside the unit ).

SynOptics ' co-founder, Engineer Ronald V. Schmidt, had experimented with a fiber-optic variant of Ethernet called Fibernet II while working at Xerox PARC, where Ethernet had been invented.

Version 2 was published in November, 1982 and defines what has become known as Ethernet II.

During the mid to late 1980s this was the dominant 10 Mbit / s Ethernet standard, but due to the immense demand for high speed networking, the low cost of Category 5 Ethernet cable, and the popularity of 802. 11 wireless networks, both 10BASE2 and 10BASE5 have become increasingly obsolete, but still exist in some locations.

Higher bandwidth 10 Gigabit Ethernet standards have since become available as the IEEE ratified a fiber-based standard in 2002, and a twisted pair standard in 2006.

They also could become internally disconnected when they are mapped from one LAN type to another, for example, Ethernet to ATM LANE ELANs or FDDI 802. 10 VLANs.

* HKBN has become the first service provider in the world to achieve the Cisco Powered Network Metro Ethernet QoS Certified status

An EtherChannel can be created from between two and eight active Fast, Gigabit or 10-Gigabit Ethernet ports, with an additional one to eight inactive ( failover ) ports which become active as the other active ports fail.

Note that these will not have any IP routing capability, but will essentially be Layer 2 Ethernet devices.

Supplied to Business and Wholesale customers, the major product family is called Private IP, and is essentially an ' Ethernet Anywhere ' service delivered over a combination of TelstraClear owned Fibre / Copper networks and Wholesale networks ( Chorus HSNS, Araneo Wireless, Network Tasman Fibre ).

The industry widely adopted Ethernet and TCP / IP, a more universal, albeit much slower network.

This distinction is exemplified by a telephone system with a connected modem, where the RJ11 connection and associated modulated signaling scheme is not considered a bus, and is analogous to an Ethernet connection.

Because Ethernet was able to adapt to market realities and shift to inexpensive and ubiquitous twisted pair wiring, these proprietary protocols soon found themselves competing in a market inundated by Ethernet products and by the end of the 1980s, Ethernet was clearly the dominant network technology.

This was followed quickly by DEC's Unibus to Ethernet adapter, which DEC sold and used internally to build its own corporate network, which reached over 10, 000 nodes by 1986, making it one of the largest computer networks in the world at that time.

Ingrid Fromm, Siemens ' representative to IEEE 802, quickly achieved broader support for Ethernet beyond IEEE by the establishment of a competing Task Group " Local Networks " within the European standards body ECMA TC24.

Approval of Ethernet on the international level was achieved by a similar, cross-partisan action with Fromm as liaison officer working to integrate International Electrotechnical Commission, TC83 and International Organization for Standardization ( ISO ) TC97SC6, and the ISO / IEEE 802 / 3 standard was approved in 1984.

The coaxial cable was replaced with point-to-point links connected by Ethernet repeaters or switches to reduce installation costs, increase reliability, and improve management and troubleshooting.

Ethernet stations communicate by sending each other data packets: blocks of data individually sent and delivered.

Due to the ubiquity of Ethernet, the ever-decreasing cost of the hardware needed to support it, and the reduced panel space needed by twisted pair Ethernet, most manufacturers now build Ethernet interfaces directly into PC motherboards, eliminating the need for installation of a separate network card.

< span id =" switch_vulnerabilities "> Despite this, switched Ethernet should still be regarded as an insecure network technology, because it is easy to subvert switched Ethernet systems by means such as ARP spoofing and MAC flooding .</ span >

A frame begins with preamble and start frame delimiter, followed by an Ethernet header featuring source and destination MAC addresses.

IEEE 802. 3 is a working group and a collection of IEEE standards produced by the working group defining the physical layer and data link layer's media access control ( MAC ) of wired Ethernet.

* Ethernet II comprise an Ethernet II frame header ( Destination, Source, EtherType ) followed by IPX data.