网络出口资源受限的自适应带宽分配策略

各级网络通常会受到出口带宽容量的限制,随着互联网技术的普及和应用的增多,网络出口普遍面临容量升级的压力.虽然出口扩容能够解决高峰期的瓶颈问题,但通常也会带来设备升级开支以及更高额的带宽租赁费.基于出口带宽用量的潮汐特征,将终端策略的带宽和QoS进行分级分档,并引入警戒系数,提出一种"逐级升档、快速降档"的自适应动态带宽分配算法,实现了高峰期约束出口带宽和保证基本业务的目标,同时算法可以对出口扩容提供预警信息.实验部分通过真实的网络设备搭建测试环境,验证了算法的正确性和有效性.

Resource-constrained adaptive dynamic bandwidth allocation

Networks at all levels are limited by the export-bandwidth. With the popularity of Internet and its applications, Network is in face of the pressure from expansion. Although it can satisfy the bandwidth requirement in peaks, it will usually result in additional cost of facility upgrade and more expensive rental charge of bandwidth. Based on the tidal characteristics of bandwidth utilization, this paper proposed an adaptive algorithm of dynamic bandwidth allocation. In this algorithm, multiple levels of bandwidth and Quality-of-Level are configured and an alerting factor is introduced. Meanwhile, early warning information of bandwidth expansion can be provided additionally. Experiments are conducted to prove the correctness and effectiveness of the algorithm.