SWF: Segmented Wildcard Forwarding for flow migration in OpenFlow datacenter networks

Kuan Tsen Kuo, Charles H.P. Wen, Cheng Suo, I. Chen Tsai

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations


Networking and performance become major issues in cloud computing. Software Defined Networking (SDN) enables flow-level management and makes routing more effective and flexible for datacenter networks (DCNs). A prior dynamic routing algorithm named Flow Migration shows good results in improving throughput and avoiding congestion through simulation. However, as Flow Migration is applied to a SDN-based DCN, tremendous overhead occurs in modifying flow tables of switches. Therefore, a novel Segmented Wildcard Forwarding (SWF) scheme is proposed to facilitate Flow Migration. SWF leverages the symmetry of a Portland topology and applies wildcard matching for balancing network loading and lowering table-modification cost for flows. Experimental results show that on a Portland 4-8-8 datacenter network, the proposed SWF scheme achieves higher throughput over than the traditional SPB does, and even reduces ∼70% modification cost used by the original implementation of Flow Migration. As a result, Segmented Wildcard Forwarding (SWF) is proven a mechanism that practically realizes dynamic routing of SDN but also improves network performance as well as cost for flow migration, simultaneously.

Original languageEnglish
Title of host publication2015 IEEE International Conference on Communications, ICC 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages6
ISBN (Electronic)9781467364324
StatePublished - 9 Sep 2015
EventIEEE International Conference on Communications, ICC 2015 - London, United Kingdom
Duration: 8 Jun 201512 Jun 2015

Publication series

NameIEEE International Conference on Communications
ISSN (Print)1550-3607


ConferenceIEEE International Conference on Communications, ICC 2015
CountryUnited Kingdom

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