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中文摘要：
为了提高高端路由器的可靠性、减少故障持续时间，关键在于控制高端路由器主备倒换的时间。文中重点分析了热备份下的主备倒换技术，在出现故障或者人为主动触发主备倒换后，高端路由器的主控板会经过平滑函数阶段、热备份初始化阶段、批同步阶段和实时同步阶段，而备UPC会在极短的时间内变为主UPC，并承担前主UPC的所有业务，从而节省大量学习时间。实验证明，本文采用基于热备份的主备倒换技术并将其运用于高端路由器中，大大地提高了系统的可靠性，减少了故障持续时间。
英文摘要：
In order to improve the reliability of high- end routers and reduce the tirrre of its fault duration, the key lied in controlling swap time. Analyzed its swapping technology under hot standby, in the event of fault or taking the initiative to trigger the swap, the high - end router＇s UPC went through stages of the smoothing function, the hotbaekup initialization stage, the batch synchronization and the real- time synchronization, and backup UPC became the main UPC in a very short time, and beard all the business from the former UPC, which saved lots of learning time. The experiments show that it is greatly increased reliability and reduced the duration of the fault.
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