摘要
令牌桶算法是目前IP QoS中最常采用的一种流量测量方法,广泛应用于约定访问速率技术、通用流量整形技术以及物理接口总速率限制等技术中。IETF RFC建议规范了单速率三色标记和双速率三色标记两种令牌桶算法,在桶的构成、令牌添加和报文处理流程方面前者较后者简单,成为目前业界比较常用的流量标记方式。在实际应用中,应针对不同的流量特征选择恰当的标记方式。
The token bucket algorithm is the most popular method of traffic measuring in IP QoS technology. It has been widely used in Committed Access Rate （CAR）, Generic Traffic Shaping （GTS）, and Line Rate （LR） technologies. Two kinds of token bucket algorithms-a single rate three color marker and a two rate three color marker-have been recommended in the Internet Engineering Task Force （IETF） Request for Comment （RFC） documents. In view of the bucket architecture, the token adding, and the packet process, the single rate three color marker is easier than the two rate one. For practical applications, different traffic characteristics choose different algorithm.
出处
《中兴通讯技术》
2007年第3期56-60,共5页
ZTE Technology Journal
关键词
令牌桶
单速率三色标记
双速率三色标记
流量监管
token bucket, a single rate three color marker
a two rate three color marker
traffic policing
