基于全IP开发平台的NP7250的数据转发机制  

Mechanism of Data Transmission Based on NP7250 in All-IP Developing Platform

作　　者：贺冰琰[1] 

机构地区：[1]集美大学计算机工程学院,福建厦门361021

出　　处：《计算机技术与发展》2013年第3期156-159,共4页Computer Technology and Development

基　　金：福建省科技重点计划项目(2009H0101)

摘　　要：传统的移动网络的各个产品大多是独立开发的,没有统一的硬软件开发平台,而全IP的多业务集成开发通信平台可避免各模块独立开发存在的重复劳动。给出了一种适用于通信领域的基于AMCC的NP7250、NPX5700和NPX5800交换套片的多业务全IP开发平台的构建方案,全IP开发平台交换结构分为两级,一级交换为Crossbar+线卡的方式,二级交换为以太网方式。重点介绍了全IP开发平台中,级连线卡NP7250的数据转发模块的设计方案,数据转发模块包括三个主要模块:1)核心路由模块;2)一级转发模块;3)二级转发模块。实现了平台上的基本信元/报文的路由转发功能。Tralitional mobile network products were developed independently, which were not developed on a unified hardware and software platform. But multi-services integrated developing communication platform based on IP can avoid repeated work due to various modules developed independently. Present a scheme about all-IP developing platform oriented to communication field based on AMCC＇s switch chipsets including NF7250,NPX5700 and NPX5800, all-IP developing platforms have two level switching architecture. One-level switching is based on Crossbar＋line card,two-level switching is Ethemet way. It mainly introduced designing scheme of data transmission module based on the network processor-NP7250. The data transmission module included three major parts： the first part is the core routing module ;the second part is one-level switching module;the third part is two-level switching module. Realize the basic cell and packet routing and forwarding function on the platform.

关 键 词：路由表 网络处理器单元 ViX接口版本3 线卡 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]