The Experts below are selected from a list of 2232 Experts worldwide ranked by ideXlab platform
Ori Rottenstreich - One of the best experts on this subject based on the ideXlab platform.
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reliable and time efficient Virtualized Function placement
IEEE Micro, 2021Co-Authors: Roi Ben Haim, Ori RottenstreichAbstract:Reliability and time-efficiency are two key elements to consider in network design. Commonly, each is measured per service—availability probability of a specific service, the latency of a specific service, and overall—system average reliability and average latency, considering the demand for every service. Intuitively, minimizing latency requires minimizing the number of network elements a service makes use of. In a nonredundant environment, this would also guarantee the maximal reliability of a service, as reliability degrades when relying on more elements. However, reliability is often guaranteed by allocating backup resources. We explain that such redundancy or the joint support for multiple services can impose a tradeoff between reliability and time-efficiency criteria. In this article, we study the conditions for the existence of such a tradeoff and design solutions that jointly take care of both design goals.
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reliable and time efficient Virtualized Function placement
High Performance Interconnects, 2020Co-Authors: Roi Ben Haim, Ori RottenstreichAbstract:Reliability and time-efficiency are two key elements to consider in network design. Commonly, each is measured per service - availability probability of a specific service, the latency of a specific service, and overall - system average reliability and system average latency, considering the demand for every service. Intuitively, minimizing latency requires minimizing the number of network elements a service makes use of. In a non-redundant environment, this would also guarantee the maximal reliability of a service, as reliability degrades when the number of elements required to implement the service increases. However, reliability is often guaranteed by allocating redundant, backup resources. We explain that such redundancy or the joint support for multiple services can impose a trade-off between reliability and time-efficiency criteria. We design solutions that jointly take care of both design goals. Our analytical model considers networks following a Virtualized paradigm - network Functions are implemented on commodity servers and a network service is implemented by chaining Functions. We examine how different assignment strategies impact reliability and time-efficiency.
Zulu, Lindinkosi Lethukuthula - One of the best experts on this subject based on the ideXlab platform.
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Simulating and prototyping software defined networking (sdn) using mininet approach to optimise host communication in realistic programmable networking environment optimise host communication in realistic programmable networking environment.
2019Co-Authors: Zulu, Lindinkosi LethukuthulaAbstract:This is a Masters student Final DissertationIn this project, two tests were performed. On the first test, Mininet-WiFi was used to simulate a Software Defined Network to demonstrate Mininet-WiFi’ s ability to be used as the Software Defined Network emulator which can also be integrated to the existing network using a Network Virtualized Function (NVF). A typical organization’s computer network was simulated which consisted of a website hosted on the LAMP (Linux, Apache, MySQL, PHP) virtual machine, and an F5 application delivery controller (ADC) which provided load balancing of requests sent to the web applications. A website page request was sent from the virtual stations inside Mininet-WiFi. The request was received by the application delivery controller, which then used round robin technique to send the request to one of the web servers on the LAMP virtual machine. The web server then returned the requested website to the requesting virtual stations using the simulated virtual network. The significance of these results is that it presents Mininet-WiFi as an emulator, which can be integrated into a real programmable networking environment offering a portable, cost effective and easily deployable testing network, which can be run on a single computer. These results are also beneficial to modern network deployments as the live network devices can also communicate with the testing environment for the data center, cloud and mobile provides. On the second test, a Software Defined Network was created in Mininet using python script. An external interface was added to enable communication with the network outside of Mininet. The amazon web services elastic computing cloud was used to host an OpenDaylight controller. This controller is used as a control plane device for the virtual switch within Mininet. In order to test the network, a webserver hosted on the Emulated Virtual Environment – Next Generation (EVENG) software is connected to Mininet. EVE-NG is the Emulated Virtual Environment for networking. It provides tools to be able to model virtual devices and interconnect them with other virtual or physical devices. The OpenDaylight controller was able to create the flows to facilitate communication between the hosts in Mininet and the webserver in the real-life networkThe University of South Africa The University of JohannesburgCollege of Engineering, Science and Technolog
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Simmulating and prototyping software definednetworking (SDN) using Mininet approach to optimise host communication in realistic programmable networking environment
2018Co-Authors: Zulu, Lindinkosi LethukuthulaAbstract:In this project, two tests were performed. On the first test, Mininet-WiFi was used to simulate a Software Defined Network to demonstrate Mininet-WiFi’ s ability to be used as the Software Defined Network emulator which can also be integrated to the existing network using a Network Virtualized Function (NVF). A typical organization’s computer network was simulated which consisted of a website hosted on the LAMP (Linux, Apache, MySQL, PHP) virtual machine, and an F5 application delivery controller (ADC) which provided load balancing of requests sent to the web applications. A website page request was sent from the virtual stations inside Mininet-WiFi. The request was received by the application delivery controller, which then used round robin technique to send the request to one of the web servers on the LAMP virtual machine. The web server then returned the requested website to the requesting virtual stations using the simulated virtual network. The significance of these results is that it presents Mininet-WiFi as an emulator, which can be integrated into a real programmable networking environment offering a portable, cost effective and easily deployable testing network, which can be run on a single computer. These results are also beneficial to modern network deployments as the live network devices can also communicate with the testing environment for the data center, cloud and mobile provides. On the second test, a Software Defined Network was created in Mininet using python script. An external interface was added to enable communication with the network outside of Mininet. The amazon web services elastic computing cloud was used to host an OpenDaylight controller. This controller is used as a control plane device for the virtual switch within Mininet. In order to test the network, a webserver hosted on the Emulated Virtual Environment – Next Generation (EVENG) software is connected to Mininet. EVE-NG is the Emulated Virtual Environment for networking. It provides tools to be able to model virtual devices and interconnect them with other virtual or physical devices. The OpenDaylight controller was able to create the flows to facilitate communication between the hosts in Mininet and the webserver in the real-life network.Electrical and Mining Engineerin
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Simulating and prototyping software defined networking (SDN) using Mininet approach to optimise host communication in realistic programmable networking environment
2018Co-Authors: Zulu, Lindinkosi LethukuthulaAbstract:In this project, two tests were performed. On the first test, Mininet-WiFi was used to simulate a Software Defined Network to demonstrate Mininet-WiFi’ s ability to be used as the Software Defined Network emulator which can also be integrated to the existing network using a Network Virtualized Function (NVF). A typical organization’s computer network was simulated which consisted of a website hosted on the LAMP (Linux, Apache, MySQL, PHP) virtual machine, and an F5 application delivery controller (ADC) which provided load balancing of requests sent to the web applications. A website page request was sent from the virtual stations inside Mininet-WiFi. The request was received by the application delivery controller, which then used round robin technique to send the request to one of the web servers on the LAMP virtual machine. The web server then returned the requested website to the requesting virtual stations using the simulated virtual network. The significance of these results is that it presents Mininet-WiFi as an emulator, which can be integrated into a real programmable networking environment offering a portable, cost effective and easily deployable testing network, which can be run on a single computer. These results are also beneficial to modern network deployments as the live network devices can also communicate with the testing environment for the data center, cloud and mobile provides. On the second test, a Software Defined Network was created in Mininet using python script. An external interface was added to enable communication with the network outside of Mininet. The amazon web services elastic computing cloud was used to host an OpenDaylight controller. This controller is used as a control plane device for the virtual switch within Mininet. In order to test the network, a webserver hosted on the Emulated Virtual Environment – Next Generation (EVENG) software is connected to Mininet. EVE-NG is the Emulated Virtual Environment for networking. It provides tools to be able to model virtual devices and interconnect them with other virtual or physical devices. The OpenDaylight controller was able to create the flows to facilitate communication between the hosts in Mininet and the webserver in the real-life network.Electrical and Mining EngineeringM. Tech. (Electrical Engineering
Roi Ben Haim - One of the best experts on this subject based on the ideXlab platform.
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reliable and time efficient Virtualized Function placement
IEEE Micro, 2021Co-Authors: Roi Ben Haim, Ori RottenstreichAbstract:Reliability and time-efficiency are two key elements to consider in network design. Commonly, each is measured per service—availability probability of a specific service, the latency of a specific service, and overall—system average reliability and average latency, considering the demand for every service. Intuitively, minimizing latency requires minimizing the number of network elements a service makes use of. In a nonredundant environment, this would also guarantee the maximal reliability of a service, as reliability degrades when relying on more elements. However, reliability is often guaranteed by allocating backup resources. We explain that such redundancy or the joint support for multiple services can impose a tradeoff between reliability and time-efficiency criteria. In this article, we study the conditions for the existence of such a tradeoff and design solutions that jointly take care of both design goals.
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reliable and time efficient Virtualized Function placement
High Performance Interconnects, 2020Co-Authors: Roi Ben Haim, Ori RottenstreichAbstract:Reliability and time-efficiency are two key elements to consider in network design. Commonly, each is measured per service - availability probability of a specific service, the latency of a specific service, and overall - system average reliability and system average latency, considering the demand for every service. Intuitively, minimizing latency requires minimizing the number of network elements a service makes use of. In a non-redundant environment, this would also guarantee the maximal reliability of a service, as reliability degrades when the number of elements required to implement the service increases. However, reliability is often guaranteed by allocating redundant, backup resources. We explain that such redundancy or the joint support for multiple services can impose a trade-off between reliability and time-efficiency criteria. We design solutions that jointly take care of both design goals. Our analytical model considers networks following a Virtualized paradigm - network Functions are implemented on commodity servers and a network service is implemented by chaining Functions. We examine how different assignment strategies impact reliability and time-efficiency.
Giovanni Schembra - One of the best experts on this subject based on the ideXlab platform.
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an analytical tool for performance evaluation of software defined networking services
Network Operations and Management Symposium, 2014Co-Authors: Alfio Lombardo, Antonio Manzalini, Vincenzo Riccobene, Giovanni SchembraAbstract:The rapid evolution of low-cost standard hardware coupled with the diffusion and the wide spread of new paradigms are stimulating Telco providers to explore the possibility of breaking down the ossification of the current Internet. This paves the way for the introduction of new approaches like Software Defined Network (SDN) and Network Function Virtualization (NFV) into the next generation networks to provide their users with software defined networking services. This context paves the way to software defined services, dynamically allocating the network Functions over the network nodes. In this paper we propose an analytical approach to support designers in the allocation of Virtualized Function over the network, taking into account both the Functions requested by the traffic flows and the quality of service (QoS) that the network provides to them. The proposed analytical approach is able to account the routing, the processing capacities of the network nodes and the statistical characterization of the flows requesting each virtualization Function. This paper follows the direction of analytically modeling a network with NFV capabilities for performance evaluation and design support.
Alfio Lombardo - One of the best experts on this subject based on the ideXlab platform.
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an analytical tool for performance evaluation of software defined networking services
Network Operations and Management Symposium, 2014Co-Authors: Alfio Lombardo, Antonio Manzalini, Vincenzo Riccobene, Giovanni SchembraAbstract:The rapid evolution of low-cost standard hardware coupled with the diffusion and the wide spread of new paradigms are stimulating Telco providers to explore the possibility of breaking down the ossification of the current Internet. This paves the way for the introduction of new approaches like Software Defined Network (SDN) and Network Function Virtualization (NFV) into the next generation networks to provide their users with software defined networking services. This context paves the way to software defined services, dynamically allocating the network Functions over the network nodes. In this paper we propose an analytical approach to support designers in the allocation of Virtualized Function over the network, taking into account both the Functions requested by the traffic flows and the quality of service (QoS) that the network provides to them. The proposed analytical approach is able to account the routing, the processing capacities of the network nodes and the statistical characterization of the flows requesting each virtualization Function. This paper follows the direction of analytically modeling a network with NFV capabilities for performance evaluation and design support.
