kumoh national institute of technology
Networked Systems Lab.

Alif Akbar Pranata, Tae-Soo Jun and Dong-Seong Kim, "Overhead Reduction Scheme for SDN-based Data Center Networks", will be published at Computer standard and interface, 2018(ISSN: 0920-5489, IF: 1.633)
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Date : 2018-02-13
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This paper proposes a framework on controller and switches to reduce overhead for SDN-based Data Center Networks (DCNs). The proposal focuses on OpenFlow (OF), a well-known, sophisticated protocol for SDN, to reduce the number of control messages, consisting of both PACKET_IN and PACKET_OUT messages handled by the OF controller during rule installation on OF switches' flow tables. The controller receives the rst packet of a flow for forwarding path determination and selectively chooses switches for rule installation. Moreover, to ensure lower loads for the controller to handle, the proposed framework adds an out-of-band controller and avoids a hybrid architecture. Extensive simulation shows signi cant results on reduced controller workload, and also confi rms that the controller installs a fewer set of ow rules, and the rule matching rate is improved, conserving resources on both OF controller and OF switches for SDN-based DCN operation.