Application of WAN acceleration in campus network
Application of WAN acceleration in campus network
1 Overview
The campus network is an important infrastructure for school development and an indispensable supporting environment for improving the level of school teaching and scientific research. On the one hand, the campus network provides various local network applications for schools, on the other hand, it is a bridge between the internal and external networks of the school campus network. Therefore, ensuring the operation and management of the campus network is the theme of the future campus network. Establishing an operable and manageable campus network can ensure the stable operation of campus teaching, scientific research, management and service of important businesses, and ensure the sustainable and healthy development of the campus network, so that students and teachers can fully enjoy the benefits brought by the campus network.
2 Problems
With the continuous improvement of information construction in colleges and universities, the increasingly widespread network applications, the popularity of multimedia video applications, and the continuous growth of P2P applications, the bandwidth performance of campus networks is facing a severe test. This brings a series of problems, such as a lot of P2P traffic occupies too much bandwidth, some normal applications such as WEB access, sending and receiving emails are slower; some people use P2P applications to occupy too much bandwidth, and some people cannot get bandwidth , Bandwidth resources cannot be used "fairly"; key applications such as multimedia teaching, digital libraries, WEB websites, etc. cannot obtain higher priority and bandwidth guarantee; due to the impact of large delays and packet loss, the response speed of TCP applications And the transmission speed is slow, especially the cross-operator, cross-country access, etc., which are the problems and challenges urgently to be solved in the network operation and maintenance management of the campus network information center.
3 Solution
In response to the above problems, China Innovation has proposed an acceleration solution for the network export of the higher education industry. By transparently deploying the LotWan WAN acceleration system at its network outlet, it allows Internet resources to do a reasonable flow control, suppress the abuse of P2P, and protect critical applications Bandwidth, accelerating the TCP application of the entire network, can greatly increase the speed of accessing the Internet, and effectively improve the bandwidth utilization. 
Flow control is a very important "blocking" technology used to optimize the WAN. Being able to "control traffic well" means basically solving WAN problems. At present, the vast majority of network traffic management equipment manufacturers can only limit the download direction traffic by discarding the received data packets, resulting in the loss of download direction bandwidth. If this problem is not solved, the "bandwidth killer" cannot be effectively controlled, nor can the priority control desired by colleges and universities be achieved. In response to this problem, China Innovation has developed precise end-to-end bandwidth control and equalization technology to accurately control the bandwidth usage in the download direction and achieve dynamic bandwidth allocation without losing any bandwidth. Huaxia's innovative precise flow control technology can not only effectively control TCP, but on the basis of research on international and Chinese popular multimedia and P2P software using UDP transmission, a download control mechanism for UDP has been added to enable its application to deliver equipment The flow control of is generally effective for all flows in the download direction. This technology is particularly suitable for school traffic control: as long as it can balance the use of bandwidth and avoid P2P preempting most bandwidth, the requirement that most people can "fairly use bandwidth resources" can be met.
On the basis of flow control, the use of the industry's original unilateral TCP acceleration technology in the LotWan WAN acceleration system can effectively improve the two-way transmission efficiency of intranet users accessing the Internet, including upload and download speeds; effectively improve remote users' access to intranet application servers Speed; effectively improve bandwidth utilization. We know that TCP protocol and application optimization are the core technologies of WAN acceleration. At present, WAN acceleration products generally adopt the TCP protocol into a private transmission protocol, so the same acceleration device or software client needs to be deployed on both ends of the link. This solution is called "bilateral deployment." China Innovative LotWan is the only WAN optimization product that supports "unilateral deployment". Through its unique unilateral TCP acceleration patented technology, China Innovative acceleration engine can interface with any standard TCP protocol stack, so that only one end can be deployed to reach other The acceleration effect that manufacturers can achieve through bilateral deployment is particularly effective for cross-operator access, and the acceleration effect is several times or even more than ten times.
LotWan WAN acceleration system is China's first WAN optimization product that integrates traffic control and application acceleration. It uses a number of world-leading technologies to meet users' comprehensive network control and optimization needs and maximize user network performance and High availability.
China Innovation is a leading provider of application delivery products in China. Based on comprehensive WAN acceleration and application delivery technologies, China Innovation launched a series of competitive WAN optimization and application delivery products in the Chinese market, including LotWan WAN acceleration equipment, LotWan WAN Optimized equipment, LotAccess remote access platform, LotBalance load balancer system, LotApp application delivery equipment, LotFlow unified network traffic management equipment, LotMobile terminal acceleration system; at the same time, for small and medium-sized enterprises, Huaxia Innovation also launched the Huachuang intelligent acceleration router series products. Huaxia innovative products have been widely used by users in various industries, and have won wide trust from users.
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