OpenQFlow: Scalable Open Flow with Flow-Based QoS

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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 flow-based 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 inicroTCA chassis equipped with a commodity multicore processor, for which our architecture is suited, to achieve high-performance with carefully engineered software design and optimization.
Publisher
IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG
Issue Date
2013-02
Language
English
Article Type
Article
Keywords

NETWORKS

Citation

IEICE TRANSACTIONS ON COMMUNICATIONS, v.E96B, no.2, pp.479 - 488

ISSN
0916-8516
DOI
10.1587/transcom.E96.B.479
URI
http://hdl.handle.net/10203/173487
Appears in Collection
EE-Journal Papers(저널논문)
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