Congestion Control Study Of Net System

Grid system is more Internet resources together a huge system, for instance we currently have fully using the remote education network, company office network utilization, scattered are typical of the grid system development and practice of the case, the grid system construction has been underway, its use Internet widely distributed of various resources become a logical overall, like a supercomputer, to provide users with integration of information and application service (computation, storage, access, etc), the virtual organization finally realize in this virtual environment resources sharing and cooperation, to realize information sharing. Networking socialization and social networking has become the informatization construction platoon guide. As one of China's social network, the pillar of the cable TV network is thriving momentum from the traditional cable transmission to today's optical transmission; The cable network development from one-way to two-way broadband HFC interactive network; Both as a large volume, transmission speed, transmission quality high, the modernization of PuJiMian extensive mass media, and as a collection of TV programs. Voice, computers and information integration in the new role, to the community, to provide all-round service. Data network operation mode has from the initial access service providers offer users connect ISP (especially nets service) kingdom, transition to the current value-added service providers to provide online (only the ICP content services) period of prosperity. With network is more and more recognition and by society, network service (NSPS use the concept of providing) will become the mainstream business operators. For enterprises and individuals with NSPS complete network solutions, without users connect and how to obtain cared about how the content, without even users buy equipment. This is operators use own network resources to get maximum income service method, as well as users get comprehensive network service most simple measures and strategies.But through the grid system in recent years of construction and constant use development, we still find, IP network technology application, multimedia, IP multicast/IP multicast, video and other network services scramble to emerging, may make special network original business impact, bandwidth bottlenecks network congestion, seriously affecting work smoothly, the grid system in the biggest problem is the network congestion, it has become almost restricted network development and application of bottleneck. Solve grid system of congestion a variety of ways, but based on research in selecting a new routing algorithm, it can solve the network congestion control problems, in the Internet in implementation is congestion control other service quality mechanism normal work, the premise is an important means of optimizing the performance of the network, and therefore to network congestion control research has the vital significance.This thesis doing work mainly are: 1. On network congestion control, review and analysis of network routing, on the basis of the topology of the network model design and research; 2, on QoS routing and QoS based on the analysis of the new, and gives the QoS routing algorithms, for network routing optimization, network congestion prevention and control provides conditions, 3. Put forward this algorithm in network protocols IPv6 using can effectively expand network address space, the proposed method and simulation, and the performance analysis. Simulation results show that this algorithm can realize network congestion control, improve the network congestion performance and achieve the purpose of prevention.