Optimizing Non-Uniform Bandwidth Reservation Based on Meter Table of Openflow

Liaoruo HUANG  Qingguo SHEN  Zhangkai LUO  

IEICE TRANSACTIONS on Information and Systems   Vol.E101-D   No.6   pp.1694-1698
Publication Date: 2018/06/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.2017EDL8261
Type of Manuscript: LETTER
Category: Information Network
bandwidth reservation,  QoS,  Openflow,  meter table,  

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Bandwidth reservation is an important way to guarantee deterministic end-to-end service quality. However, with the traditional bandwidth reservation mechanism, the allocated bandwidth at each link is by default the same without considering the available resource of each link, which may lead to unbalanced resource utilization and limit the number of user connections that network can accommodate. In this paper, we propose a non-uniform bandwidth reservation method, which can further balance the resource utilization of network by optimizing the reserved bandwidth at each link according to its link load. Furthermore, to implement the proposed method, we devise a flexible and automatic bandwidth reservation mechanism based on meter table of Openflow. Through simulations, it is showed that our method can achieve better load balancing performance and make network accommodate more user connections comparing with the traditional methods in most application scenarios.