In today's business world, reliable and efficient access to information has become an important asset in the quest to achieve a competitive advantage. File cabinets and mountains of papers have given way to computers that store and manage information electronically. Coworkers thousands of miles apart can share information instantaneously, just as hundreds of workers in a single location can simultaneously review research data maintained online. In this background, Ethernet is born as a family of computer networking technologies commonly used in local area networks (LAN), metropolitan area networks (MAN) and wide area networks (WAN). In this article, we will take a very close look at Ethernet, so you can understand Ethernet in full view.
What Is Ethernet?
Ethernet is a local area technology connected devices in close proximity, and it is the name of the most commonly used LAN today. A LAN (Local Area Network) is a network of computer that covers a small area like a room, an office, a building or a campus. It is used in contrast with WAN (wide area network) which spans for much larger geographical areas. Ethernet is a network protocol that controls how data is transmitted over a LAN. Technically it is referred to as the IEEE 802.3 protocol.
There are different types of Ethernet, including Standard Etherenet (10Mbit/s), Fast Ethernet(100Mbit/s) and 10G(10Gbit/s) Ethernet. In fact, the original Xerox Ethernet operated at 3Mbps. Ethernet became popular as a 10Mbps standard over coaxial or twisted pair cabling. Fast Ethernet improved speeds to 100Mbps over twisted pair or fiber optic cables. Gigabit Ethernet now provides speeds up to 1Gpbs over twister pair or fiber optic cabling.
How Does Ethernet Work?
When a host in Ethernet wants to transmit data, it follows the following steps :
1.Monitor whether there is a signal on the monitor channel. If so, indicating that the channel is busy, continue to listen until the channel is idle.
2.If not , it will transmit data.
3.Continue to monitor when transmitting, perform a back-off algorithm if a conflict is found, wait for a period to re-execute step 1 (when the collision occurs, the computer that is involved in the collision will be sent back to the listening channel state.)
Pay attention: each computer can only send one package at a time, a sequence of congestion to warn all nodes.
4.It is successful if no conflicts found, all computers must wait 9.6 microseconds after the last time they attempt to send data again(running at 10 Mbps).
Ethernet adopts a carrier frame capture multiple access (CSMA / CD) mechanism with collision detection. All nodes in Ethernet can see all the information sent in the network, therefore, we also call Ethernet as a broadcast network.
What Is The Ethernet Current Situation ?
The IEEE is pushing Ethernet to unimaginable speeds, from 3Mbps over shared coax to 40/100Gbps over fiber. With the Ethernet standard completed, the 40G and 100G Ethernet is coming out in the demand of optical network communication development. As we know, 40G Ethernet is mainly used for data center area, and 100G Ethernet for operators. Nowadays, 40G/100G Ethernet technology plays a significant meaning to the design of network infrastructure. What’s more, with the mature of 40G Ethernet technology, it is called as “Road Sign” for Ethernet at present, while 100G is rare in market for its high price. In another hand, they all promote cabling transition from serial to parallel. Take the optical transceiver connector for example, transition from LC connector to MPO connector is the true story. Another influence is fiber density’s increase, 40G Ethernet use 8fibers for transmission while 100G use 24fibers. With the high development of communication network, 200G and 400G are on the way...
Conclusion:
Ethernet has become one of the most popular optical communication networks with the advantage of low price, stable and reliable, high communication rate, rich hardware and software products, wide application, mature technology and so on. In recent years, with the development of network technology, Ethernet enters to the control area and forms a new type Ethernet control network technology. The future industry control system development direction must be through industry Ethernet network to achieve interconnect, and final connect internet. Anyway, let’s look forward to foresight the future of Ethernet.
What Is Ethernet?
Ethernet is a local area technology connected devices in close proximity, and it is the name of the most commonly used LAN today. A LAN (Local Area Network) is a network of computer that covers a small area like a room, an office, a building or a campus. It is used in contrast with WAN (wide area network) which spans for much larger geographical areas. Ethernet is a network protocol that controls how data is transmitted over a LAN. Technically it is referred to as the IEEE 802.3 protocol.
There are different types of Ethernet, including Standard Etherenet (10Mbit/s), Fast Ethernet(100Mbit/s) and 10G(10Gbit/s) Ethernet. In fact, the original Xerox Ethernet operated at 3Mbps. Ethernet became popular as a 10Mbps standard over coaxial or twisted pair cabling. Fast Ethernet improved speeds to 100Mbps over twisted pair or fiber optic cables. Gigabit Ethernet now provides speeds up to 1Gpbs over twister pair or fiber optic cabling.
How Does Ethernet Work?
When a host in Ethernet wants to transmit data, it follows the following steps :
1.Monitor whether there is a signal on the monitor channel. If so, indicating that the channel is busy, continue to listen until the channel is idle.
2.If not , it will transmit data.
3.Continue to monitor when transmitting, perform a back-off algorithm if a conflict is found, wait for a period to re-execute step 1 (when the collision occurs, the computer that is involved in the collision will be sent back to the listening channel state.)
Pay attention: each computer can only send one package at a time, a sequence of congestion to warn all nodes.
4.It is successful if no conflicts found, all computers must wait 9.6 microseconds after the last time they attempt to send data again(running at 10 Mbps).
Ethernet adopts a carrier frame capture multiple access (CSMA / CD) mechanism with collision detection. All nodes in Ethernet can see all the information sent in the network, therefore, we also call Ethernet as a broadcast network.
What Is The Ethernet Current Situation ?
The IEEE is pushing Ethernet to unimaginable speeds, from 3Mbps over shared coax to 40/100Gbps over fiber. With the Ethernet standard completed, the 40G and 100G Ethernet is coming out in the demand of optical network communication development. As we know, 40G Ethernet is mainly used for data center area, and 100G Ethernet for operators. Nowadays, 40G/100G Ethernet technology plays a significant meaning to the design of network infrastructure. What’s more, with the mature of 40G Ethernet technology, it is called as “Road Sign” for Ethernet at present, while 100G is rare in market for its high price. In another hand, they all promote cabling transition from serial to parallel. Take the optical transceiver connector for example, transition from LC connector to MPO connector is the true story. Another influence is fiber density’s increase, 40G Ethernet use 8fibers for transmission while 100G use 24fibers. With the high development of communication network, 200G and 400G are on the way...
Conclusion:
Ethernet has become one of the most popular optical communication networks with the advantage of low price, stable and reliable, high communication rate, rich hardware and software products, wide application, mature technology and so on. In recent years, with the development of network technology, Ethernet enters to the control area and forms a new type Ethernet control network technology. The future industry control system development direction must be through industry Ethernet network to achieve interconnect, and final connect internet. Anyway, let’s look forward to foresight the future of Ethernet.
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