Latest revision as of 23:05, 1 February 2021

Abstract

In order to meet a tremendous amount of data storage requirement in next-generation wireless networks, an increasing number of cloud data centers has been deployed around the world. The underlying core networks are expected to provide the ability to store data in a dynamic and scalable computing environment. The traditional Internet Protocol (IP) has shown to be restricted due to its static architecture, which accordingly motivates the development of Software-Defined Networks (SDNs). In the SDNs, Traffic Engineering (TE) is simpler and programmable with a controller without the requirement of reconfiguration for all network devices. However, the existing TE algorithm of the SDNs rejects a number of requested flows caused by their undetermined routing paths where only flow bandwidth is considered in path determination. This paper proposes a Quality-of-Service (QoS) based Flow Assignment algorithm which enables the computation of end-to-end path for traffic flows guaranteeing the QoS requirements including bandwidth, end-to-end delay and packet loss probability. Through the Open Source Hybrid IP/SDNs platform, the proposed algorithm is validated and shown to significantly reduce flow rejection rate of up to 50% compared to the conventional approach, and therefore can be used to implement an effective DiffServ mechanism for flow allocation in the SDNs.

Original document

The different versions of the original document can be found in:

• https://eprints.mdx.ac.uk/26337/1/FlowOptimization_SDN_Conference_181218.pdf

• http://link.springer.com/content/pdf/10.1007/978-3-030-15032-7_64,

http://dx.doi.org/10.1007/978-3-030-15032-7_64 under the license http://www.springer.com/tdm

• https://dblp.uni-trier.de/db/conf/aina/aina2019.html#ThiruvasakanVLM19,

http://eprints.mdx.ac.uk/26337,

https://link.springer.com/chapter/10.1007%2F978-3-030-15032-7_64,

http://repository.uwl.ac.uk/id/eprint/6590,

https://academic.microsoft.com/#/detail/2928854725