IPv6流标识在区分服务中的应用技术

The application Technology of IPv6 Flow Label Used in DiffServ

IPv6定义了流的概念,使用“流标识”域来提供服务质量保证。本文探讨了在IPv6中使用流标识实现QoS的基本原理,描述了流标识的特性,对IPv6流标识在区分服务应用中所遇到的数据报分类、流标识随机值、数据报分段等问题进行了分析。提出采用二级结构的流状态信息表技术和相联存储器查询技术,提高了QoS路由器的查找速度。

IPv6 defines concept of flow, and uses ＂flow-label＂ domain to provide guarantee of QoS. In this paper, we discuss the basic principle of implement QoS using flow label, and describe the characteristic of flow labd, analyze the problems about packet classification, the random values of flow label and fragments of packets using IPv6 Flow label in Diffserv. We present the technology of two-level structure using in flow status information table and the technology of Content Addressable Memory table lookup, this makes a QoS router do a faster hash table lookup.