According to the demand for IPTV network performance testing a solution to the traffic generator base on FPGA is presented,the design rules are given and traffic flow label design formats are specified, combining with the requirements of IP packet and custom stream format, the custom IP packet generating process is described. Network environment for the data stream of diversity and burst is simulated, the GRR algorithm for the flow stream scheduling is deeply discussed, the flow patterns and flow sheet design of the constant-burst model stream are analyzed. Finally, the simulation and verification of the system design based on FPGA are given, the results show that the design is stable, good results are got in IlIV analyzer applications.%根据IPTV网络性能测试的需求,提出了基于FPGA流量生成解决方案,给出了流量设计规则和详细的流标签设计格式,结合IP报文和自定义流的格式要求,描述了自定义IP包的生成过程.为了模拟网络环境中数据流的多样性和突发性,讨论了用于流调度的GRR算法,重点分析了均匀突发流的流模式和流表设计,最后通过FPGA对系统设计进行仿真验证,结果表明设计方案稳定,在IPTV测试仪的应用中取得良好效果.
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