Ethernet Technology Encyclopedia (i)

From 10M, 100M, gigabit to Gigabit Ethernet, the development of Ethernet technology, in the rate of increase in the number of levels, the application of the field is also widening. However, the application requirements of different application fields have promoted the individualized development of Ethernet technology in these fields. At the same time, Ethernet network processor chip technology and testing methods are also developing and mature.

"Ethernet Technology Encyclopedia" is an Ethernet-related technology synthesizer, including the following: Fiber Ethernet, Wireless LAN, End-to-end Ethernet, multi-layer switching and load balancing, network processor, carrier-level broadband technology, Ethernet security, Ethernet testing and Ethernet based IP storage and so on. (Computer science)

The development of technology is always closely related to the specific application requirements of a certain historical period, so is the development of Ethernet technology. Moreover, the development of Ethernet technology has always been ahead, never lag behind. Fiber Ethernet

Fiber-optic Ethernet products can implement WAN communication services in Ethernet packet format with the help of Ethernet devices. The technology can be applied to any optical transmission network-optical fiber direct transmission, SDH and DWDM network transmission. At present, fiber Ethernet can realize the standard Ethernet speed of 10Mbps, 100Mbps and 1Gbps, and it will become a bright spot of all kinds of business after it reaches 10Gbps.

The fiber-optic Ethernet business is more cost-effective than other broadband access (such as DS3), but so far it has been used only in office buildings or in buildings where fibre optics have been laid. The strategic value of this new method of using Ethernet is not limited to cheap access, it can be used for both access and the local backbone of the service provider network, it can be used only on the 2nd tier, but also as an effective way to implement layer 3rd services, which supports IP, IPX, and other legacy protocols. In addition, because it is still a LAN in nature, it can be used to help service providers manage the interconnection between enterprise LANs and enterprise LANs and other networks.

Current and planned fibre Ethernet devices are based on layer 2nd LAN switches, layer 3rd LAN switches, SONET devices, and DWDM. Some companies are planning to introduce fibre-optic Ethernet switches designed for network operators, which have many features to ensure quality of service (e.g., packet classification and congestion management). All future products may require the following key technologies and performance: high reliability, high-end port density, service quality assurance and other functions.

limiting factors

The flexibility of fibre-optic Ethernet and its relatively low price make it very popular. But one factor that limits its direct impact is that operators have few buildings or buildings with fiber-optic construction. Optical fiber is an integral component of optical Ethernet, so the optical Ethernet business can be provided only where the fiber is deployed or where new fiber can be quickly and cheaply paved.

Implement device

The most attractive feature of fiber-optic Ethernet is its ability to offer low-cost business because most of its equipment is relatively inexpensive. Most fiber-optic Ethernet devices include the Enterprise Layer 2nd Ethernet switch with fibre optic interface. Switched fibre-optic Ethernet products are typically based on layer 2nd LAN switches. However, some vendors ' schemes are based on third-tier switches. The fibre-optic Ethernet solution enables the SPS to build mixed networks, some of which are on the 2nd floor, while others are combinations of 2nd/3 tiers.

A wide range of uses

Fibre-optic Ethernet can support the following business types.

High-bandwidth Internet access and (potentially) other communication access, such as Frame relay and dedicated line;

Man metropolitan area network;

A transparent LAN service within a man, that is, a fixed-rate LAN to LAN traffic;

Storage Area Network (SAN) services, where Ethernet connections replace or transmit fibre Channel connections between local servers and Remote storage devices;

A VPN service (similar to a VPN in planning based on the Multi-Protocol markup conversion standard), which is based on the 802.1p Ethernet standard;

Business for other SPS to assemble and connect DSL and cable modems;

Manageable LAN business and manageable Internet security business.

More applications are expected to emerge, such as the fiber Ethernet voice service, which means that fibre Ethernet will be used as an access technology to transmit voice to VoIP backbone networks.