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Internet (Internet) in China has gone through the course of a decade, according to the China Internet Network Information Center (CNNIC), the latest release of 21 China Internet Development Statistics Report shows the total number of Internet users in China reached 210 million people. After more than ten years of rapid development, China's Internet has been the formation of scale, using the Internet more and more people in work, study and life, society as a whole run to catch the express train of the Internet, and marked with the imprint of the Internet, the Internet has from a single industry, the Internet developed into the depth of the community of all walks of life in China's Internet. With the rapid development of computer network, a growing number of network access the Internet. Internet in size, scope and number of users is expanding very fast. More and more users to use the Internet as a platform for data transmission, and to carry out a variety of applications. In addition to traditional WWW, FTP, E-mail applications, users can also try to develop new business on the Internet, such as distance learning, telemedicine, video telephony, video conferencing, video-on-demand and other. Enterprise users want to VPN technology to connect around the branches to carry out some transactional applications: for example, access the company's database or remote device management via Telnet. These new businesses have a common characteristic, that they have special requirements on bandwidth, delay, jitter transfer performance. Such as video conferencing, video-on-demand high bandwidth, low latency and low jitter guarantee. Mission-critical transaction processing, Telnet does not necessarily require a high bandwidth, but very low delay and require preferential treatment when congestion occurs. Higher requirements for new businesses are emerging IP network services, users are no longer satisfied the packet to its destination, but also want to get better service in the forwarding process, such as support provides users with dedicated bandwidth, reducing packet loss rate, management and avoid network congestion, regulating network traffic, set the priority of the message. All of these requirements, the network should be provided with better services. How to break the bottleneck of the existing IP network, fully support high-bandwidth, high-quality services, so that the network can flexibly according to the specific characteristics of the business to the customer satisfaction service, has become the focus of attention of the major telecom operators. Several basic model to solve IP QoS, Integrated Services (Int-Serv) model, Differentiated Services (Diff-Serv) model, Multi-Protocol Label Switching (MPLS) In this article, this introduction of IP MAN The QoS implementation issues are discussed. This article describes the IP QoS in the Shanghai Branch of China Netcom IP MAN, solve new business growing in IP network QoS requirements, and also to avoid the increase in large-scale transformation of the original network equipment and manpower investment able to keep up with emerging business needs to fully guarantee the sound development of the network.
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