双网卡冗余技术的设计与实现  

Design and implementation of redundancy for dual-NIC

作　　者：张漫[1] 陈冬芳[1] 董玉红[1] 王永安[1] 

机构地区：[1]大庆石油学院计算机科学与工程学院,黑龙江大庆163318

出　　处：《大庆石油学院学报》2005年第3期63-65,125,共4页Journal of Daqing Petroleum Institute

摘　　要：采用故障检测和故障恢复原理,研究了一种基于双网卡的网络冗余方法,设计了网络冗余方法的功能模块.故障检测模块可实现使用链路状态检测与Loopback检测相结合的检测方法,故障恢复模块则实现在激活物理层出现故障后,可将系统切换到备用物理层上继续运行;该方法可有效地提高嵌入式网络设备通信的可靠性.In order to protect against possible network node or link failure in embeded network environment, well-planed fault recovery methods are necessary to achieve higher reliability of network communication. In this paper, we present a method based on dual NIU redundancy. The proposed method consists of the fault detection method and fault recovery method. The fault detection method uses link status test and loopback test in IEEE802.3 Ethernet. The fault correction method takes charge of correcting the activated NIU's fault by switching to the standby NIU. Implementation of the proposed method can improve the reliability of communication effectively.

关 键 词：容错 冗余 故障恢复 

分 类 号：TP393.06[自动化与计算机技术—计算机应用技术]