Traffic-aware network update in software-defined NFV networks

Tien Jan Hsieh, Ching Chih Chuang, Shih Fan Chou, Ai Chun Pang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


Recently, a new paradigm integrating software-defined networking (SDN) with network function virtualization (NFV), named SDNFV, has gained increased interests from industry and academia. In SDNFV, network update is a notable process that replaces the current network configuration by the target one. To accomplish the process, network providers modify a set of rules for the data plane in a manner that directs network traffics to a sequence of virtualized network functions (VNFs) in a predefined order. In contrast to the legacy SDN environment, there exists a unique property for SDNFV that the traffic volume of a flow would be changed after the flow is processed by VNFs. We observe that the traffic-changing property causes a "chain-reaction"phenomenon in which both the link bandwidth and CPU utilization of VNFs are affected. Without careful consideration of the phenomenon, the overall performance of SDNFV will be significantly degraded and some consistency properties cannot be maintained during network updates, which motivates us to have in-depth investigation on the phenomenon and its caused problem. We formulate the problem, based on the Fat-tree architecture which has been widely adopted for large-scale data-center deployment, and propose an efficient algorithm to solve the problem. Simulation results demonstrate that our proposed solution can benefit from the proper treatment of traffic-changing property during network updates for SDNFV.

Original languageEnglish
Title of host publicationWPMC 2020 - 23rd International Symposium on Wireless Personal Multimedia Communications
Subtitle of host publicationBridging Wireless and Business Worlds
PublisherIEEE Computer Society
ISBN (Electronic)9781728182964
Publication statusPublished - 2020 Oct 19
Event23rd International Symposium on Wireless Personal Multimedia Communications, WPMC 2020 - Virtual, Okayama, Japan
Duration: 2020 Oct 192020 Oct 26

Publication series

NameInternational Symposium on Wireless Personal Multimedia Communications, WPMC
ISSN (Print)1347-6890


Conference23rd International Symposium on Wireless Personal Multimedia Communications, WPMC 2020
CityVirtual, Okayama

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Computer Science Applications
  • Human-Computer Interaction


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