Journal
COMPUTER NETWORKS
Volume 192, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.comnet.2021.107981
Keywords
Software-Defined Networking (SDN); Hybrid SDN; Network architecture; Network security; Network management; Traffic engineering; Implementation and deployment
Categories
Funding
- Comunidad de Madrid [S2018/TCS-4496, CM/JIN/2019-039]
- Junta de Comunidades de Castilla la Mancha [SB-PLY/19/180501/000324]
- European Community [815279]
- Spanish State Research Agency [PID2019-108713RB-C52PID2019-108713RB-C52/AEI/10.13039/501100011033]
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SDN is seen as a new and futuristic networking paradigm adopted by large network and cloud providers, but its deployment requires significant time and resources. As a compromise solution, Hybrid SDN (hSDN) combines SDN functionalities with traditional network infrastructures, making it a viable networking solution for various businesses and organizations. In recent years, hSDN research has expanded significantly, showcasing its potential in the networking industry.
Software-Defined Networking (SDN) is an evolutionary networking paradigm which has been adopted by large network and cloud providers, among which are Tech Giants. However, embracing a new and futuristic paradigm as an alternative to well-established and mature legacy networking paradigm requires a lot of time along with considerable financial resources and technical expertise. Consequently, many enterprises cannot afford it. A compromise solution then is a hybrid networking environment (a.k.a. Hybrid SDN (hSDN)) in which SDN functionalities are leveraged while existing traditional network infrastructures are acknowledged. Recently, hSDN has been seen as a viable networking solution for a diverse range of businesses and organizations. Accordingly, the body of literature on hSDN research has improved remarkably. On this account, we present this paper as a comprehensive state-of-the-art survey which expands upon hSDN from many different perspectives.
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