Advantages and Standards of Ethernet

Concept explanation:

Ethernet is the most common communication protocol standard adopted by the existing LAN. The Ethernet network uses CSMA/CD (Carrier Sense Multiple Access and Conflict Detection) technologies.

Ethernet dominates LAN technologies:

1. Low cost (less than 100 Ethernet network cards); The large output and wide use make it possible to achieve a lower price, thus occupying a dominant position in the market.

2. It is the most widely used LAN technology; It makes Convenient communication; Easy operation; More importantly, the excellent protocol makes communication between computer devices easier and faster.

3. It is cheaper than token ring network and ATM network; Cost is also the key to this success; Simple operation;

4. The network has a wide speed range: 10Mb/s~10Gb/s. Meet users’ requirements for different network speeds.

Two Ethernet standards

DIX EthernetV2: The first LAN product (Ethernet) protocol.

IEEE 802.3: The first IEE Ethernet standard developed by the 802.3 Working Group of IEEE 802 Committee has made minor changes in the frame format.

Because of the commercial competition among manufacturers, IEEE 802 committee was forced to formulate several different LAN standards: 802.4 token bus network, 802.5 token ring network, etc.

In order to better adapt the data link layer to various LAN standards, IEEE 802 committee divided the data link layer into logical link layer LLC sublayer and media access control MAC sublayer.

LLC and MAC are connected to the network and physical layers, respectively, so they have different functions.

The LAN reference model described in IEEE 802 standard only corresponds to the OSI reference model’s data link layer and physical layer.

The above is the knowledge explanation of Ethernet Advantages and Standards brought by Shenzhen Haidiwei Optoelectronics Technology Co., Ltd., a manufacturer of optical communication equipment. The communication products company cpver ONU, OLT, SFP and many more.