Development trend of multilayer switching technology

At present, the Ethernet technology has penetrated into the network application of every corner, its advantage lies in the application for many years, familiar to the user, the business finger matching time is short. Ethernet is a mature standardization technology, interchangeable interoperability, with a wide range of hardware and software support, low cost. In the leading position of Ethernet technology, the Company believes that, in the market demand driven by the continuous development of Ethernet switching technology, in the third layer of exchange technology to mature, on the basis of the fourth to the seventh layer of exchange technology is gradually accepted, and within a certain range has been applied.

The third layer switching technology has the characteristics of fast speed and high reliability, and can satisfy the need of network development by intelligent bandwidth control technology. The third layer exchange technology of the extreme into network fully embodies this idea. It fully takes into account the advantages of Ethernet and Internet, and combined with the third layer of wire speed exchange, can enable enterprises to quickly deploy networks, to carry out various services. The city area network solution based on the third-tier exchange can be used for telecom service providers, application service providers, content suppliers and enterprises, and construct a simple, extensible network system with certain service quality guarantee function. The scheme introduces a telecom class switch, which is flexible in configuration, has high fault tolerance, and supports the complete redundancy of hot-swappable module, component and Exchange Management module, and its policy-based QoS assurance system can achieve priority setting, bandwidth management and congestion control. In addition, this switch can also carry on the line Speed server load equalization, the webpage cache redirection and so on. It is worth mentioning that the Ethernet bandwidth Allocation service capability is a key factor to check the quality of a network function. The scheme of the extreme access network can realize the fixed delay transmission of audio and video, and it has high reliability, and the service provider can charge for the customer's bandwidth usage. This scheme is suitable for medium and long distance optical devices in metropolitan area network, and can integrate wavelength division multiplexing technology to extend bandwidth and support virtual LAN service in the same metropolitan area network.

The next generation of networks will be more intelligent. With the introduction of the fourth to the seventh tier exchange, the network identifies the applications and services to which each packet on the network belongs, and then applies this information to transfer the packets to the correct path. The company thinks it's going to be a trend, however, the performance of the fourth to the seventh Layer Exchange platform is not ideal, and if the hardware scheme is adopted, the occurrence, analysis, adjustment and termination functions of the TCP/IP meeting layer are accomplished by wire speed, which is much faster than the software based system. As in the late 90, soft routing technology, like the third-tier exchange migration based on ASIC chips, will dramatically improve network performance and reduce overall customer costs, as is the hardware of the application-tier switching engine.

Ethernet in the exchange of technology development, the speed is also increasing. At present, the research and standardization process of 10 Gigabit Ethernet is progressing smoothly. To pole into the network as a representative of a group of technology-leading companies began to actively promote the advent of 10 Gigabit Ethernet, it is noteworthy that many telecommunications companies have joined the ranks. 10 Gigabit Ethernet If mature, will not only continue to promote the development of LAN, but also will have far-reaching impact on the development of the WAN.