该文分析了IntServ/RSVP与DiffServ这两种IP网络的QoS保障机制的原理,并对这两种体系结构进行了比较,说明了各自的优缺点,同时也指出了这两种机制的适用环境。文中提出了一种将DiffServ模型与MPLS技术相结合的基于IP网络的QoS保障机制。该方案实现简便,无需修改信令协议和中间路由器的功能,只需在标记边缘路由器上进行一定映射即可。利用该方法可以很好地保障IP网络的QoS。 This paper analyzes the principle of QoS guarantee mechanism between IntServ / RSVP and DiffServ, and compares the two architectures, explains their respective advantages and disadvantages, and also points out the applicable environment of these two mechanisms . This paper proposes a QoS guarantee mechanism based on IP network that combines DiffServ model and MPLS technology. The solution is easy to implement and does not need to modify the functions of the signaling protocol and the intermediate router. Only a certain mapping can be performed on the labeled edge router. This method can be well protected IP network QoS.