| In an era of information technology rapid development, in order to meet the military,commercial, education, finance and other industries strong demand, the computer networkhas become a popular subject, and the high availability of network computer networkattracted more attention and research. Hardware, software and related agreement isessential to study high availability network of several important factors. BGP (bordernetwork management protocol) is used for different routing protocol, only in theautonomous system reliability, stability and flexibility to produce a great impact on thenormal use of the network applications. IETF, extending the BGP protocol in a message toadd Graceful Restart function, from the protocol level to increase the availability ofcomputers. In support of Graceful Restart under the premise of major equipment, and todevelop the function of NSF, ensure that under the condition of the veneer of hardwarefailure flow forward don’t interrupt.Based on the study of BGP protocol in this paper, it introduces the BGP GracefulRestart extension technology and NSR Non-stop-routing technology comprehensivly,and improve the hardware to realize smooth resumption of technology condition. In viewof the existing business routers are thoroughly analyzed in abnormal situation, smoothflow interruptions in the restart and CPU utilization rate is high, this paper puts forward acorresponding solution, based on adaptive fault recovery mechanism, optimize theexisting software recovery strategy. Experimental results show that this mechanism canimprove the availability of the system and smooth restart flow uninterrupted performancerequirements, and lead to less overhead, is a reasonable and effective fault recoverystrategy. |
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