分析了第一代主动网在数据包处理中存在的不足，引入新的主动节点数据流调度模型A-Flow，给出了该模型在主动节点传输系统ANTS中的实现方案。新模型基于主动网封装协议ANEP，通过分解调度输入主动节点的数据流，可以实现不同的执行环境在同一节点共存。该模型拥有数据包缓存、认证及净荷调度等功能，提高了主动节点的性能和安全性。关 键 词 主动网; 流调度; 性能; 互操作性; A-FlowAbstract This paper analyses the deficiency of packet handling in active networks, and presents A Flow-dispatching model named A-Flow on active networks. In this paper a project of ANTS over A-Flow is implemented. The new model is based on ANEP, it can make multiple execution environments interoperate on the same node, and it has functions of packet buffering, identification and payload dispatching, which may improve the performance and security of active nodes.Key words active network; flow dispatching; performance; interoperation; A-Flow