【摘要】 对ATM的QoS进行简要介绍之后，重点讨论了在ABR服务中为实现QoS而可以采用的两种流量控制方式，并提出了一种改进的基于速率的流控机制，这种方式在广域网中显得更为公平。更多还原

【Abstract】 After a brief introduction to the QoS defined by ATM forum, traffic management of ABR service is discussed in detail, ncluding credit-based mechanism and rate-based mechanism.And then this paper proposes an improved rate-based mechanism which, especially in WAN. is more fair than the basic mechanism.更多还原