Designing And Implementation Of System Survivability Enhancement Based On Autonomous Configuration

Under the circumstances of modern network, various social activities depend on the network services more and more, self-fault and destruct with the network service system result in the prevalent disaster to information-based society, and therefore the survivability of network service system has been a focus of attention for many researchers. Thereinto, system survivability enhancement is an important study aspect.The survivability enhancement of network service is mainly studied in this paper. It carries out via copying the service to many net nodes using the technologies of autonomous configuration,service handoff and so on to construct a peer-to-peer structure model without front controller to provide continuous applications. This model could select the optimal service resource automatically, offer functions such as balanced load and disabled transfer, improve the survivability enrichment of service finally.During the design and implementation period of the original system, complete analysis is done to the TCPHA system, in which the most effective technologies of multithreading structure and TCP handoff are adopted; the problem of front bottleneck existing in the manner of central control has been solved by integrating the dispatch module and service module together to form a peer-to-peer network without front-controller, and also by the ability of transmitting and providing services for each node. Self-organizing arithmetic is also added to this peer-to-peer network, which could switch the service to another node when the survivability has declined for the recent one, so as to provide continuous service to achieve a high level of survivability.Lastly, experiments have tested the validity of the original system, and point out the current shortage of the system and the expectation to the later study.