Adaptive router bypass techniques to enhance core network efficiency

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dc.contributor.authorGhonaim, Fahad A.
dc.contributor.supervisorGanti, Sudhakar
dc.contributor.supervisorDarcie, Thomas Edward
dc.date.accessioned2018-04-30T16:38:33Z
dc.date.available2018-04-30T16:38:33Z
dc.date.copyright2018en_US
dc.date.issued2018-04-30
dc.degree.departmentDepartment of Electrical and Computer Engineeringen_US
dc.degree.levelDoctor of Philosophy Ph.D.en_US
dc.description.abstractInternet traffic is increasing exponentially, driven by new technologies such as Internet of Things (IoT) and rich streaming media. The traditional IP router becomes a bottleneck for further Internet expansion due to its high power consumption and inefficiency in processing the growing traffic. Router bypass has been introduced to overcome capacity limitations and the processing costs of IP routers. With router bypass, a portion of traffic is provisioned to bypass the router and is switched by the transport layer. Router bypass has shown to provide significant savings in network costs. These advantages are limited by a reduction in the statistical multiplexing associated with the subdivision of the available bandwidth typically into bypass and traditional portions thus limiting the interest in bypass techniques. This thesis will explore multiple techniques to enhance the efficiency of router bypass. The main goals are to address the issue of the reduction in statistical multiplexing and to add a dynamic approach to the router bypass mechanism. The recent advancements in the Optical Transport Network (OTN) play a major role in the transport network. This proposal takes full advantage of OTN in the router-bypassing context by applying recent developments such as Hitless Adjustments ODUflex (HAO), which allow the provisioned channels to be adjusted without re-establishing the connections. In addition, it will allow the bypassing mechanism to be flexible enough to meet the traffic behaviour needs of the future. This thesis will study multiple approaches to enhance the router bypass mechanism including: an adaptive provisioning style using various degrees of provisioning granularities and controlling the provisioning based on traffic behaviour. In addition, this thesis will explore the impact of automation in Software-Defined Networking (SDN) on router bypass. The application-driven infrastructure in SDN is moving the network to be more adaptive, which paves the way for an enhanced implementation of router bypass. Many challenges still face the industry to fully integrate the three layers (3, 2, and 1) to transform the current infrastructure into an adaptive application driven network. The IP router (layer 3) provisions and restores the connection regardless of the underlying layers (layer 2 and 1) and the transport layer does the same regardless of the IP layer. Although allowing every layer to develop without being constrained by other layers offers a huge advantage, it renders the transport layer static and not fully aware of the traffic behaviour. It is my hope that this thesis is a step forward in transforming the current network into a dynamic, efficient and responsive network. A simulation has been built to imitate the router bypassing concept and then many measurements have been recorded.en_US
dc.description.scholarlevelGraduateen_US
dc.identifier.bibliographicCitationF. A. Ghonaim, T. E. Darcie and S. Ganti, Adaptive router bypass using feedback adjusted OTN, 2015 22nd International Conference on Telecommunications (ICT), Sydney, NSW, 2015, pp. 123-127. doi: 10.1109/ICT.2015.7124669en_US
dc.identifier.bibliographicCitationF. A. Ghonaim, T. E. Darcie and S. Ganti, Enhanced router bypass using fine granularity transport channels, 2015 International Conference on Computer, Information and Telecommunication Systems (CITS), Gijon, 2015, pp. 1-5. doi: 10.1109/CITS.2015.7297753en_US
dc.identifier.bibliographicCitationFahad A. Ghonaim, Thomas E. Darcie, and Sudhakar Ganti, "Impact of SDN on Optical Router Bypass," J. Opt. Commun. Netw. 10, 332-343 (2018)en_US
dc.identifier.urihttp://hdl.handle.net/1828/9283
dc.languageEnglisheng
dc.language.isoenen_US
dc.rightsAvailable to the World Wide Weben_US
dc.subjectCapacity limitsen_US
dc.subjectSoftware-Defined Networks (SDN)en_US
dc.subjectRouter Bypassen_US
dc.subjectGreen Networksen_US
dc.subjectSpace division multiplexingen_US
dc.subjectMultilayer Switchingen_US
dc.subjectOptical Networksen_US
dc.subjectOptical Transport Network (OTN)en_US
dc.subjectNetwork topologyen_US
dc.titleAdaptive router bypass techniques to enhance core network efficiencyen_US
dc.typeThesisen_US

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