Allocation and Scheduling of Network Resource for Multiple Control Applications in SDN

• Published in: China communications 2015-06, Vol.12 (6), p.85-95
• Main Authors: Feng, Tao, Bi, Jun, Wang, Ke
• Format: Article
• Language: English
• Subjects: Bandwidth; Channel allocation; Delays; Optimization; resource allocation; SDN; multipleapplications; Resource management; SDN; Switches; 公平分配; 控制平面; 控制应用; 数据包转发; 网络资源分配; 资源调度; 链路带宽
• ISSN: 1673-5447
• DOI: 10.1109/CC.2015.7122483

The network resource allocation in SDN for control applications is becoming a key problem in the near future because of the conflict between the need of the flow-level flexibility control and the limited capacity of flow table. Based on the analysis of the dif- ference of the definition of network resource between SDN and traditional IP network, the idea of the integrated allocation of link bandwidth and flow table for multiple control applications in SDN is proposed in this paper. Furthermore, a price-based joint allocation model of network resource in SDN is built by introducing the price for each of the resources, which can get the proportional fair allocation of link bandwidth and the minimum global delay at the same time. We have also designed a popular flow scheduling policy based on the proportional fair allocation of link bandwidth in order to achieve the minimum global delay. A flow scheduling module has been imple- mented and evaluated in Floodlight, named virtual forwarding space （VFS）. VFS can not only implement the fair allocation of link bandwidth and minimum delay flow sched- uling in data plane but also accelerate packet forwarding by looking up control rules in con- trol plane.