Implementation And Research Of Outbound Link Load Balancing Strategies

With rapid development of Internet technology and continuous improvement of business, network data traffic in fast-growing. In this situation, single-link services easily failure. Interconnection of different Internet service providers (ISP) can not avoid making a single-link to a slow link, so many companies tend to use more export supported by different ISP, in this way, and resources will not be wasted but be used properly. So the needs of multi-link load balance come into being. The traditional routing strategy can solve the problem in some level, but the policy routing configuration is not convenient and flexible enough to adapt to dynamic changes of network topology. On the other side, link load balance (LB) can achieve multi-link cooperate working, parallel processing, forward the message by distributed them to different links properly. In this way, LB significantly improves QoS, make full use of network resources. Base on the above background, this paper achieves outbound multi-link load balance network in H3C's COMWARE Version 5 software platform and multi-core products.This paper focuses on analysis and implements routing strategy of multi-link load balance. By introducing the system architecture and the implementation principle of multi-link load balance, this paper analyses necessity of routing policy in link load balancing strategy for scheduling strategy is the key to choose a rapid and accurate link LB and provide customers with high-quality services. To meet different needs of different networking, this paper detailed analysis and design proximity scheduling, bandwidth scheduling, least-connection scheduling and persistence scheduling. Then implement several routing strategies of Link load balancing. In the end of this paper, describe how to set up test environment and test routing policy in link load balancing strategy that implemented by this paper, and then describe testing process and analysis of test results.The characteristics of this paper are: first, implement intelligent selection in route strategy of multi-link load balance, implement proximity scheduling while provide whole links bandwidth to internal staff, in this way, allows the user to obtain the optimal network speed experience. Considered the features of multi-core system is divided into control plane and data plane,in proximity scheduling algorithms, greatly enhance packet forwarding rate by processing proximity detection in control plane while generating proximity item in data plane. In least-connection scheduling algorithms, compared with the locking critical resources pattern, significantly enhance the system performance by scheduling each nuclear independently to achieve concurrent access.