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为了解决目前互联网中核心路由器功耗大并且功耗效率低的问题,提出了一种基于处理能力共享的路由器体系结构GreenRouter。该结构将路由器线卡拆分为分组处理部分(母板)和接口部分(子板),通过两级交换网络的互连使所有子板共享各母板的分组处理能力。调度算法将路由器各接口到达的流量分配到最小数目的处于工作状态的母板上,关闭其他母板实现节能。研究了GreenRouter的体系结构和运行机制中的关键问题,利用实际网络流量进行的模拟实验表明:GreenRouter在保证网络服务质量的前提下,能够节省超过40%的功耗。
In order to solve the problem of large power consumption and low power consumption of the core routers in the Internet at present, a router architecture GreenRouter based on processing power sharing is proposed. This structure splits the router line card into the packet processing part (daughter board) and the interface part (daughter board), and makes all daughter boards share the packet processing capability of each mother board through the interconnection of the two-stage switching network. The scheduling algorithm distributes the traffic arriving on each interface of the router to the minimum number of active motherboards, and turns off the other motherboards to save energy. The key issues in the architecture and operation mechanism of GreenRouter are studied. Simulation experiments based on actual network traffic show that GreenRouter can save more than 40% power consumption while ensuring network service quality.