[Keywords:] computer network technology development trend
[China Library Classification Number] TP393 [Document Identification Number] A [Document Contribution Number]1007-9416 (2010) 02-001.
With the popularization of computers and the rapid development of network technology, computer networks have undergone earth-shaking changes, from the initial simple connection to the current LAN (local area network) MAN) WAN (wide area network), which directly changed human life and had a great impact on the world [1]. Let's analyze the development trend of computer network according to its present situation.
1 the development trend of computer network
1. 1 Development trend of openness and large capacity
System openness is an important system feature for any system to maintain vigorous vitality and sustainable development, so it should also be an important direction for the development of computer network systems. Internet structure refers to the structure that realizes the interconnection of different communication subnets under the unified management of routing and switching functions in the third-layer network communication system. It reflects the low-level openness of supporting various communication protocols in the network hierarchical system, because this internet structure can organically connect various communication technologies and communication systems such as high-speed local communication network, wide-area public communication network, optical fiber communication, satellite communication, wireless mobile communication, etc. into the computer network, forming a large communication platform covering the whole world and supporting hundreds of millions of people to access the Internet flexibly and conveniently. This global openness of computer network not only makes it face to billions of users around the world, but also will rapidly increase more resources, which will inevitably lead to a substantial increase in the capacity demand of network system and promote the development of computer network system in the direction of wide area and large capacity. Here, large capacity includes high-speed information transmission capability, high-speed information processing capability, large-capacity information storage and access capability, and large-capacity information acquisition and control throughput capability. The demand for large capacity of network system will promote the development of network communication architecture, communication system, computer and interconnection technology to high speed, broadband and large capacity. The direction of broadband, high speed and large capacity of the network is closely related to the direction of network opening. 2/KLOC-The modern computer network in the 20th century will be a wide-area, broadband and high-speed network, which will continuously integrate various new information technologies, possess extremely rich resources and be further opened to the world [2].
1.2 development trend of integration and ease of use
Based on the integrity of the system, in order to further enhance the system function, improve the system performance, reduce the system cost and facilitate the system use, the system was redesigned and constructed. Integrated structure is a system optimization structure. In the early days of computer network development, simple interconnection between computers was realized through communication system. This initial network function is relatively simple (mainly sharing remote computer resources), and the computer and communication system after networking basically maintain the basic structure before networking. With the continuous expansion of computer network applications and the continuous improvement of network system functions and performance requirements, many components in the network will be re-divided and reassembled according to the requirements of overall system optimization, and even new components may be generated. Another path of system integration is based on virtual technology, which optimizes system performance by reorganizing hardware and repackaging software to build various network virtual systems. Distributed application services of various transparent nodes on the network, such as distributed file system, distributed database system, distributed hypertext query system, etc. What users see is a virtual file system, a virtual database system and a virtual information query system. They can use these virtual systems conveniently without having to care about the internal structure and operation details of the network. The modern computer network in 2 1 century will be a network with further optimized division of labor within the network, and users outside the network can use it more conveniently and transparently [3].
1.3 trend of high-speed information processing
With the rapid development of Internet technology, a new computing mode & network technology appears in the application of complex scientific computing. With the development and application of network technology, network technology and application will be characterized by high-performance processing, massive data storage and a large number of instruments and equipment, and become the information processing infrastructure of human society in 2 1 century. Through it, the scattered heterogeneous and dynamic computing and information resources in the Internet can be gathered together, and people can upgrade the Internet from a platform for communication and information interaction to a platform for resource sharing and collaborative work.
1.4 optical switching and intelligent optical network technology
At present, network technology is developing from an optical network with optical add-drop multiplexer (OADM) and optical cross-connect (OXC) to an intelligent optical network composed of optical switches. From ring network to mesh network; From optical-electrical-optical switching to all-optical switching. That is, the automatic wavelength configuration function is introduced into the optical network, that is, the automatic switched optical network (ASON), which makes the static optical network move towards the dynamic optical network. Its main features are: (1) allowing dynamic allocation of network resources to routes; (2) Shorten the time for upgrading and expanding the business layer; (3) Significantly increase the business load of service layer nodes, and provide and expand services quickly; (4) Reduce the operation, maintenance and management costs; (5) It has the ability of quick response and business recovery in the optical layer; (6) It also reduces the chance of human error; But also has expansibility, which improves the self-help of users; (7) Improve the scalability and reliability of the network; Therefore, intelligent optical network will become the development trend of optical communication network in the future [4].
1.5 development trend of application services
The fundamental purpose of designing and constructing computer network system is for application. The network application finally embodies the purpose and function of the network system. As a highly integrated computer network with various advanced information technologies, it has developed rapidly under the impetus of the information application demand of human society. It is through various concrete network application systems that the computer network reflects its support for social informatization. National informatization, domain informatization, regional informatization and enterprise informatization will eventually be implemented in all walks of life and specific units to establish various specific network application systems. Therefore, various network application systems based on the basic network system platform have become an inseparable and important part of the computer network system. At present, the research on network application system architecture, network application software development tools, classification application system specifications and integration methods of standardized and integrated application systems is very active and has made great progress. Modern computer networks in 2 1 century will present a variety of network application systems that are more suitable for wider application needs and more convenient to use, but they can't see the network.
2 conclusion
The future computer network is intelligent, integrated, efficient, multifaceted and complete. Therefore, the combination and fusion of artificial intelligence technology, intelligent computer and computer network technology to form an intelligent computer network with more thinking ability is the inevitable trend of the development of artificial intelligence technology and intelligent computer. At present, the development of distributed intelligent decision-making system, distributed expert system, distributed knowledge base system, distributed intelligent control system and intelligent network management technology based on computer network system also clearly reflects the development trend of computer network in the future.
[References]
[1] Li Qing. The development direction of computer network. Jinan Second People's Hospital, 2009(7).
[2]https:// temperature. Omit/z/z/q /z /z/q 162538664.htm
[3] Integrity. Future-oriented computer network. Journal of Chifeng University. (Natural Science Edition), 2008(9).
[4]https://www . ellipsis/shalong/show post . ASP？ PostID=233。