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OpenQFlow: Scalable OpenFlow with Flow-Based QoS
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- Authors
- Nam-Seok KO, Hwanjo HEO, Jong-Dae PARK, Hong-Shik PARK
- Issue Date
- 2013-02
- Citation
- IEICE Transactions on Communications, v.E96.B, no.2, pp.479-488
- ISSN
- 1745-1345
- Publisher
- 일본, 전자정보통신학회 (IEICE)
- Language
- English
- Type
- Journal Article
- Project Code
- 12MI1400, Development of Flow Processing Engine for Supporting Next-Generation Telecommunication Equipments, Park Jong Dae
- Abstract
- OpenFlow, originally proposed for campus and enterprise network experimentation, has become a promising SDN architecture that is considered as a widely-deployable production network node recently. It is, in a consequence, pointed out that OpenFlow cannot scale and replace today's versatile network devices due to its limited scalability and flexibility. In this paper, we propose OpenQFlow, a novel scalable and flexible variant of OpenFlow. OpenQFlow provides a fine-grained flow tracking while flow classification is decoupled from the tracking by separating the inefficiently coupled flow table to three different tables: flow state table, forwarding rule table, and QoS rule table. We also develop a two-tier flowbased QoS framework, derived from our new packet scheduling algorithm, which provides performance guarantee and fairness on both granularity levels of micro- and aggregate-flow at the same time. We have implemented OpenQFlow on an off-the-shelf microTCA chassis equipped with a commodity multicore processor, for which our architecture is suited, to achieve high-performance with carefully engineered software design and optimization. Copyright © 2013 The Institute of Electronics, Information and Communication Engineers.
- KSP Keywords
- Coupled flow, Design and optimization, Flow Classification, Flow Table, Flow tracking, Flow-based, High performance, Information and communication, Micro-, Network Experimentation, Network devices