摘要
为了消除现有移动IPv6网络中单个家乡代理设备可能造成的单点故障和性能瓶颈问题,分析了目前的家乡代理容错和负载均衡机制,提出了一种主动检测过载预防的动态容错方法。该方法仅对家乡链路进行扩展,并在架构中增加智能均衡器,通过在其中维护代理列表和环状备份链进行容错,并采用家乡代理实时动态选择算法和切片机制支持负载均衡。建立了该方案的数学模型,分析了代理之间的状态转换关系。实验结果表明本方法可以有效减少移动节点的消息注册时间,增强了移动IPv6网络的可靠性。
To eliminate the possible single-point failure and performance bottleneck problem caused by one home agent device existed in current mobile IPv6 network,home agent fault tolerance and load balancing mechanism are analyzed.A dynamic fault tolerance method based on active detection and over-load prevention is proposed,only home link is extended in this method,and intelligent balancer is introduced in the architecture,agent list and ring backup chain are maintained in it for fault tolerance,moreover,home agent real-time dynamic selection algorithm and slice mechanism are adopted to support load balancing.Meanwhile,mathematical model of this method is built,the state transition relationship between agents is also analyzed.Experiments demonstrate that this proposed scheme reduce mobile node registration time efficiently and enhance reliability of the mobile IPv6 network.
出处
《计算机工程与设计》
CSCD
北大核心
2010年第24期5196-5199,共4页
Computer Engineering and Design
基金
2009河南省重大攻关基金项目(092101210104)
河南省教育厅基金项目(2008A520024)
