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Analysis of Packet Sending and Receiving by L3 Ethernet Switch CPU
Author(s): 
Pages: 47-49
Year: Issue:  2
Journal: ZTE COMMUNICATIONS

Keyword:  三层以太网交换机CPU中断轮询直接存储器存取队列调度;
Abstract: 三层以太网交换机发展迅速,一方面网络设备的带宽及交换容量大幅提升,另一方面设备所支持的协议种类也随着用户的需求不断增加.如何在大业务量的网络环境下确保各设备之间协议包的正常交互,是以太网交换机设计面临的重要问题.文章以基于ASIC的三层以太网交换机为例,从CPU负载、软硬件队列配置、CPU和交换芯片的通信机制等方面入手,讨论并分析在多进程环境中与CPU收发包功能相关的一些典型问题,得到解决办法.解决方法对于网络处理器(NP)同样适用.
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