IP网络设备中的QoS实现技术

随着IP网络的不断扩大和网络承载业务的不断增加,网络运营商在网络QoS方面的要求在不断提高,由最初的尽力而为和无需QoS保证的网络服务质量要求,逐渐演变到要求运营商提供严格端到端QoS的服务质量保证。本文主要是在基于MPLS的DiffServ网络中,在数据经过IP网络设备时,对QoS实现过程进行分析,并且对比分析了目前QoS在IP网络上实现的几种主要技术,着重对基于MPLS的DiffServ模型网络的DS域边界设备LER和域内设备LSR的QoS实现过程,包括用户识别、流分类、队列调度和拥塞控制等做了全面的论述。

The Implementation of QoS Technology on IP Network Equipment

Along with the IP network expansion and the increasing load of network, network operation business in the network service nature aspect request in the unceasing enhancement, by initial does best effort and does not need the QoS guarantee the network grade of service request, gradually evolves to the request operation business provides strict end-to-end QoS guarantee. This paper is focused on the implementation for QoS of Data in IP network equipments, which relies on the DiffServ model based on MPLS. In this paper, full-scale dissertation and analysis are presented to illuminate the present technology of QoS over IP Network, especially emphasized the whole process of implementation of QoS relies on the DiffServ model based on MPLS, for LER and LSR, including the implementation of user identity, packet classification, queue schedule and congestion control and so on.