摘要： 可用性是衡量计算机系统性能的重要指标。作为计算机网络关键设备的核心路由器必须具有高可用性。该文介绍了计算网络设备可用度的方法；并详细分析了动态冗余技术实现的关键。结合核心路由器的特点，此技术成功地运用到银河风云核心路由器的设计与开发中。

关键词: 冗余, 核心路由器, 可用度, 平均故障间隔时间, 平均修复时间

Abstract: Availability is a very important criterion for evaluating a system's performance. As critical equipments in the computer network, core routers must have high availability. This paper introduces methods to calculate the availability of network equipments, and analyzes the key points to realize the dynamic redundancy technique.Combined with the core router's features, this technique is successfully applied to the design and development of the Galaxy Forward core router.

中图分类号: 

• TN915.05