Utility-optimized flow-level bandwidth allocation in hybrid SDNs

The software-defined network (SDN) is a new networking paradigm to improve network performance via logically centralized control and open standardized interfaces. However, the introduction of SDN technology faces many difficulties due to operational and economic constraints. Therefore, an incrementa...

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Main Authors: Huang, Xiaohong, Yuan, Tingting, Ma, Maode
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2018
Subjects:
Online Access:https://hdl.handle.net/10356/87719
http://hdl.handle.net/10220/45489
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-877192020-03-07T13:57:31Z Utility-optimized flow-level bandwidth allocation in hybrid SDNs Huang, Xiaohong Yuan, Tingting Ma, Maode School of Electrical and Electronic Engineering Software-defined Network Hybrid SDN The software-defined network (SDN) is a new networking paradigm to improve network performance via logically centralized control and open standardized interfaces. However, the introduction of SDN technology faces many difficulties due to operational and economic constraints. Therefore, an incremental deployment scenario, the so-called hybrid SDN, is preferred. The transition from a legacy network to a pure SDN may take a long time; hence, it is of vital importance to consider the network optimization problem for hybrid SDNs. With SDN-enabled devices, multi-paths, where each flow can have multiple alternative paths, can be supported in bandwidth allocation. In contrast to traditional bandwidth allocation mechanisms in pure IP networks and full SDNs, this paper proposes a utility maximization model with the coexistence of single paths and multi-paths in the network, which aims to facilitate the transition to SDNs. We also design a novel algorithm to solve the maximization model, which is no longer strictly concave. Extensive simulations are conducted to evaluate the performance of the proposed bandwidth allocation strategy. Compared with existing strategies, our strategy has a good performance in terms of utility improvement. The results also show that with an increasing number of devices deployed in the SDN, more paths can be used to allocate the bandwidth; thus, a greater network utility can be achieved. Published version 2018-08-06T08:36:25Z 2019-12-06T16:47:53Z 2018-08-06T08:36:25Z 2019-12-06T16:47:53Z 2018 Journal Article Huang, X., Yuan, T., & Ma, M. (2018). Utility-optimized flow-level bandwidth allocation in hybrid SDNs. IEEE Access, 6, 20279-20290. https://hdl.handle.net/10356/87719 http://hdl.handle.net/10220/45489 10.1109/ACCESS.2018.2820682 en IEEE Access © 2018 IEEE. Translations and content mining are permitted for academic research only. Personal use is also permitted, but republication/redistribution requires IEEE permission. See http://www.ieee.org/publications_standards/publications/rights/index.html for more information. 12 p. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Software-defined Network
Hybrid SDN
spellingShingle Software-defined Network
Hybrid SDN
Huang, Xiaohong
Yuan, Tingting
Ma, Maode
Utility-optimized flow-level bandwidth allocation in hybrid SDNs
description The software-defined network (SDN) is a new networking paradigm to improve network performance via logically centralized control and open standardized interfaces. However, the introduction of SDN technology faces many difficulties due to operational and economic constraints. Therefore, an incremental deployment scenario, the so-called hybrid SDN, is preferred. The transition from a legacy network to a pure SDN may take a long time; hence, it is of vital importance to consider the network optimization problem for hybrid SDNs. With SDN-enabled devices, multi-paths, where each flow can have multiple alternative paths, can be supported in bandwidth allocation. In contrast to traditional bandwidth allocation mechanisms in pure IP networks and full SDNs, this paper proposes a utility maximization model with the coexistence of single paths and multi-paths in the network, which aims to facilitate the transition to SDNs. We also design a novel algorithm to solve the maximization model, which is no longer strictly concave. Extensive simulations are conducted to evaluate the performance of the proposed bandwidth allocation strategy. Compared with existing strategies, our strategy has a good performance in terms of utility improvement. The results also show that with an increasing number of devices deployed in the SDN, more paths can be used to allocate the bandwidth; thus, a greater network utility can be achieved.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Huang, Xiaohong
Yuan, Tingting
Ma, Maode
format Article
author Huang, Xiaohong
Yuan, Tingting
Ma, Maode
author_sort Huang, Xiaohong
title Utility-optimized flow-level bandwidth allocation in hybrid SDNs
title_short Utility-optimized flow-level bandwidth allocation in hybrid SDNs
title_full Utility-optimized flow-level bandwidth allocation in hybrid SDNs
title_fullStr Utility-optimized flow-level bandwidth allocation in hybrid SDNs
title_full_unstemmed Utility-optimized flow-level bandwidth allocation in hybrid SDNs
title_sort utility-optimized flow-level bandwidth allocation in hybrid sdns
publishDate 2018
url https://hdl.handle.net/10356/87719
http://hdl.handle.net/10220/45489
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