The Experts below are selected from a list of 38322 Experts worldwide ranked by ideXlab platform
Ashwin Gumaste - One of the best experts on this subject based on the ideXlab platform.
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VNF Availability and SFC Sizing Model for Service Provider Networks
IEEE Access, 2020Co-Authors: Sidharth Sharma, Anna Engelmann, Admela Jukan, Ashwin GumasteAbstract:This paper considers service Provider Network design with a view of meeting application availability. Our primary goal is to design a service Provider Network using disparate Network components and low-availability Virtual Network Functions (VNFs) while achieving high-availability Service Function Chains (SFCs). To this end, we attempt to answer the questions as to how much redundancy, and what type of redundancy should be incorporated in the Network. Initially, we model a state-of-the-art Provider architecture that is spread across the access, metro-core and backbone Networks with associated discrete components such as switches, routers, optical equipment and data-centers. Our Network design model leads to computing the amount of over-the-top (OTT) services that can be provisioned over a given Network while achieving a particular availability. To this end, we formulate a constrained optimization model whose objective is profit maximization subject to availability measures that OTT services demand. We provide constraints of robustness that facilitate traffic churn. Four heuristics are also proposed with objectives that consider the breadth of the three key impacting parameters: VNF licensing cost, server utilization and delay optimization and the case for dynamic traffic. A simulation model presents comparative data for efficiency, latency and server utilization as well as validates our optimization model. The results stress the importance of an efficient optimization model in planning the Network, as well as planning VNF placement ahead in time.
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ICCCN - Designing Highly-Available Service Provider Networks with NFV Components
2019 28th International Conference on Computer Communication and Networks (ICCCN), 2019Co-Authors: Sidharth Sharma, Aniruddha Kushwaha, Arun K. Somani, Ashwin GumasteAbstract:We consider the availability of applications in a large Provider Network environment. Our primary goal is to design a service Provider Network for high-availability using multiple components that have different availability. Initially, we model a modern Provider architecture that is spread across the access, metro and core regions. We want to answer the specific question as to what amount of over-the-top (OTT) services can be provisioned over a given Network while achieving a predesired availability value. To this end, we formulate a constrained optimization model whose objective is revenue maximization subject to availability measures. Two heuristics are also proposed that fathom the breadth of the virtual Network function (VNF) deployment parameters: VNF licensing cost and server utilization. A simulation model presents comparative data for efficiency and server utilization as well as validates our optimization model. The results stress the importance of our optimization model in planning the Network, as well as planning VNF placement ahead in time.
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Network hardware virtualization for application provisioning in core Networks
IEEE Communications Magazine, 2017Co-Authors: Ashwin Gumaste, Kandarp Khandwala, Inder MongaAbstract:Service Providers and vendors are moving toward a Network virtualized core, whereby multiple applications would be treated on their own merit in programmable hardware. Such a Network would have the advantage of being customized for user requirements and allow provisioning of next generation services that are built specifically to meet user needs. In this article, we articulate the impact of Network virtualization on Networks that provide customized services and how a Provider's business can grow with Network virtualization. We outline a decision map that allows mapping of applications with technology that is supported in Network-virtualization--oriented equipment. Analogies to the world of virtual machines and generic virtualization show that hardware supporting Network virtualization will facilitate new customer needs while optimizing the Provider Network from the cost and performance perspectives. A key conclusion of the article is that growth would yield sizable revenue when Providers plan ahead in terms of supporting Network-virtualization-oriented technology in their Networks. To be precise, Providers have to incorporate into their growth plans Network elements capable of new service deployments while protecting Network neutrality. A simulation study validates our NV-induced model.
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OFC - Strategies for VNF placements in large Provider Networks
Optical Fiber Communication Conference, 2017Co-Authors: Ashwin Gumaste, Sidharth Sharma, Tamal Das, Aniruddha KushwahaAbstract:We examine three strategies of VNF placement in a Provider Network: static service chains; seamless VNF duplication and VNF-dynamic-splitting. A constrained optimization applied to a large Provider evaluates these strategies and showcases cost-latency trade-off.
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demonstrating a software defined Network sdn using carrier ethernet switch routers in a Provider Network
Optical Fiber Communication Conference, 2015Co-Authors: Ashwin Gumaste, Sarvesh Bidkar, Puneet Ghodasara, Saurabh Hote, Anirudha Kushwaha, Rishav Ambasta, Peeyush AgrawalAbstract:We demonstrate SDN in a service Provider Network using adapted Carrier Ethernet Switch Routers developed based on principles of segment routing. SDN based service composition and delivery is showcased and validated.
James Roberts - One of the best experts on this subject based on the ideXlab platform.
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Building a transparent optical wide area Network with multipaths
Journal of optical communications and networking, 2013Co-Authors: Davide Cuda, Esther Le Rouzic, Raluca-maria Indre, James RobertsAbstract:We propose an all-optical Networking solution for a wide area Network built on shared multipoint-to-multipoint lightpaths that, for short, we call “multipaths.” A multipath concentrates the traffic of a group of source nodes on a wavelength channel using an adapted medium access control protocol and multicasts this traffic to a group of destination nodes that extract their own data from the confluent stream. The proposed Network can be built using existing components and appears less complex and more efficient in terms of energy consumption than alternatives like optical packet switching and optical burst switching. The paper presents the multipath architecture and compares its energy consumption to that of a classical router-based Internet service Provider Network. A flow-aware dynamic bandwidth allocation algorithm is proposed and shown to have excellent performance in terms of throughput and delay.
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Building a Low-Energy Transparent Optical Wide Area Network With “Multipaths”
Journal of Optical Communications and Networking, 2012Co-Authors: Davide Cuda, Esther Le Rouzic, Raluca-maria Indre, James RobertsAbstract:We propose an all-optical Networking solution for a wide area Network built on shared multipoint-to-multipoint lightpaths that, for short, we call "multipaths." A multipath concentrates the traffic of a group of source nodes on a wavelength channel using an adapted medium access control protocol and multicasts this traffic to a group of destination nodes that extract their own data from the confluent stream. The proposed Network can be built using existing components and appears less complex and more efficient in terms of energy consumption than alternatives like optical packet switching and optical burst switching. The paper presents the multipath architecture and compares its energy consumption to that of a classical router-based Internet service Provider Network. A flow-aware dynamic bandwidth allocation algorithm is proposed and shown to have excellent performance in terms of throughput and delay. © 2009-2012 OSA.
Davide Cuda - One of the best experts on this subject based on the ideXlab platform.
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Building a transparent optical wide area Network with multipaths
Journal of optical communications and networking, 2013Co-Authors: Davide Cuda, Esther Le Rouzic, Raluca-maria Indre, James RobertsAbstract:We propose an all-optical Networking solution for a wide area Network built on shared multipoint-to-multipoint lightpaths that, for short, we call “multipaths.” A multipath concentrates the traffic of a group of source nodes on a wavelength channel using an adapted medium access control protocol and multicasts this traffic to a group of destination nodes that extract their own data from the confluent stream. The proposed Network can be built using existing components and appears less complex and more efficient in terms of energy consumption than alternatives like optical packet switching and optical burst switching. The paper presents the multipath architecture and compares its energy consumption to that of a classical router-based Internet service Provider Network. A flow-aware dynamic bandwidth allocation algorithm is proposed and shown to have excellent performance in terms of throughput and delay.
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Building a Low-Energy Transparent Optical Wide Area Network With “Multipaths”
Journal of Optical Communications and Networking, 2012Co-Authors: Davide Cuda, Esther Le Rouzic, Raluca-maria Indre, James RobertsAbstract:We propose an all-optical Networking solution for a wide area Network built on shared multipoint-to-multipoint lightpaths that, for short, we call "multipaths." A multipath concentrates the traffic of a group of source nodes on a wavelength channel using an adapted medium access control protocol and multicasts this traffic to a group of destination nodes that extract their own data from the confluent stream. The proposed Network can be built using existing components and appears less complex and more efficient in terms of energy consumption than alternatives like optical packet switching and optical burst switching. The paper presents the multipath architecture and compares its energy consumption to that of a classical router-based Internet service Provider Network. A flow-aware dynamic bandwidth allocation algorithm is proposed and shown to have excellent performance in terms of throughput and delay. © 2009-2012 OSA.
Peeyush Agrawal - One of the best experts on this subject based on the ideXlab platform.
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demonstrating a software defined Network sdn using carrier ethernet switch routers in a Provider Network
Optical Fiber Communication Conference, 2015Co-Authors: Ashwin Gumaste, Sarvesh Bidkar, Puneet Ghodasara, Saurabh Hote, Anirudha Kushwaha, Rishav Ambasta, Peeyush AgrawalAbstract:We demonstrate SDN in a service Provider Network using adapted Carrier Ethernet Switch Routers developed based on principles of segment routing. SDN based service composition and delivery is showcased and validated.
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OFC - Demonstrating a software defined Network (SDN) using Carrier Ethernet Switch Routers in a Provider Network
Optical Fiber Communication Conference, 2015Co-Authors: Ashwin Gumaste, Sarvesh Bidkar, Puneet Ghodasara, Saurabh Hote, Anirudha Kushwaha, Rishav Ambasta, Peeyush AgrawalAbstract:We demonstrate SDN in a service Provider Network using adapted Carrier Ethernet Switch Routers developed based on principles of segment routing. SDN based service composition and delivery is showcased and validated.
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field trial of a software defined Network sdn using carrier ethernet and segment routing in a tier 1 Provider
Global Communications Conference, 2014Co-Authors: Sarvesh Bidkar, Ashwin Gumaste, Puneet Ghodasara, Saurabh Hote, Anirudha Kushwaha, Rishav Ambasta, Geetha Patil, Shivprasad Sonnis, Braja Nayak, Peeyush AgrawalAbstract:Software Defined Networking (SDN) has brought a paradigmatic shift in the Networking industry and has led to significant benefits in the data-center and enterprise Network domains. The service Provider Networks that form the largest segment of Networking industry, are now evaluating SDN technologies for adoption. In this paper, we present a SDN framework for service Provider Networks and report the first field trial of SDN in a tier-1 service Provider domain. The proposed SDN framework is built using Carrier Ethernet and augmented with recently proposed Segment Routing paradigm manifested through Software Defined-Carrier Ethernet Switch Routers (SD-CESRs). Carrier Ethernet on account of its distinct, programmable control plane and Segment Routing through its source routing capabilities facilitates SDN implementation. The SD-CESRs are deployed in a tier-1 service Provider Network in the metropolis of Mumbai. The SDN framework is extended through specific APIs to enhance revenue bearing services portfolio of the service Provider and performance results from the field are shown to validate the benefits of SDN adoption.
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GLOBECOM - Field trial of a software defined Network (SDN) using carrier Ethernet and segment routing in a tier-1 Provider
2014 IEEE Global Communications Conference, 2014Co-Authors: Sarvesh Bidkar, Ashwin Gumaste, Puneet Ghodasara, Saurabh Hote, Anirudha Kushwaha, Rishav Ambasta, Geetha Patil, Shivprasad Sonnis, Braja Nayak, Peeyush AgrawalAbstract:Software Defined Networking (SDN) has brought a paradigmatic shift in the Networking industry and has led to significant benefits in the data-center and enterprise Network domains. The service Provider Networks that form the largest segment of Networking industry, are now evaluating SDN technologies for adoption. In this paper, we present a SDN framework for service Provider Networks and report the first field trial of SDN in a tier-1 service Provider domain. The proposed SDN framework is built using Carrier Ethernet and augmented with recently proposed Segment Routing paradigm manifested through Software Defined-Carrier Ethernet Switch Routers (SD-CESRs). Carrier Ethernet on account of its distinct, programmable control plane and Segment Routing through its source routing capabilities facilitates SDN implementation. The SD-CESRs are deployed in a tier-1 service Provider Network in the metropolis of Mumbai. The SDN framework is extended through specific APIs to enhance revenue bearing services portfolio of the service Provider and performance results from the field are shown to validate the benefits of SDN adoption.
Tuan Anh Nguyen - One of the best experts on this subject based on the ideXlab platform.
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Using Social Media to Enhance Provider Network for HIV and Harm Reduction Service Integration in Vietnam
AIDS and Behavior, 2019Co-Authors: Li Li, Chunqing Lin, Julie Hsieh, Diep Bich Nguyen, Tuan-anh Le, Nan Feng, Tuan Anh NguyenAbstract:Social media can potentially serve as a platform to coordinate medical care among fragmented health sectors. This paper describes procedures of using social media to enhance antiretroviral therapy (ART) and methadone maintenance treatment (MMT) Providers’ virtual Network for integrated service for HIV-positive people who inject drugs (PWID) in Vietnam. A total of 88 ART and MMT treatment Providers participated in person group sessions followed by online virtual support to improve service integration. In-person reunions were held to reinforce Facebook participation and Network activities. Content analysis was used to identify keywords and topic categories of the online information exchange. Both MMT and ART Providers were actively engaged in online communications. Referral and treatment adherence were the two most frequently discussed topic areas by both the MMT and ART Providers. Frequent cross-agency connections were observed. Online Provider Networks and communities could be built and useful to support treatment Providers to improve service integration.ResumenLos medios sociales pueden potencialmente servir una plataforma para coordinar atencion medica entre los sectores de salud fragmentados. Este documento describe los procedimentos de uso de las redes sociales para mejorar proveedores red virtual de proveedores de terapia antiretoriviral (TARV) y la tratamiento de mantenimiento con metadona (TMM) para el servicio integrado para personas VIH positivas que se inyectan drogas en Vietnam. Un total de 88 proveedores de tratamiento de TARV y TMM participación en sesiones grupales en persona siguiendo un ayuda virtual web para mejorar integracions de servicio. Se llevaron reuniones en persona para reforzar la participación en Facebook y en las actividades de la red. El método de análisis se utiliza para identificar palabras y categorías de intercambio de información en línea. Los proveedores de TMM y TARV participaron activamente en las comunicaciones en línea. La referencia y la adherencia al tratamiento fueron las dos áreas temáticas más discutidas por los proveedores de TMM y TARV. Observaron conexiones frecuentes entre agencias. Las redes y comunidades de proveedores en línea podrían ser construidas y útiles para apoyar a los proveedores de tratamiento para mejorar la integración del servicio.
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Using Social Media to Enhance Provider Network for HIV and Harm Reduction Service Integration in Vietnam.
AIDS and behavior, 2019Co-Authors: Chunqing Lin, Julie Hsieh, Diep Bich Nguyen, Nan Feng, Tuan Anh NguyenAbstract:Social media can potentially serve as a platform to coordinate medical care among fragmented health sectors. This paper describes procedures of using social media to enhance antiretroviral therapy (ART) and methadone maintenance treatment (MMT) Providers' virtual Network for integrated service for HIV-positive people who inject drugs (PWID) in Vietnam. A total of 88 ART and MMT treatment Providers participated in person group sessions followed by online virtual support to improve service integration. In-person reunions were held to reinforce Facebook participation and Network activities. Content analysis was used to identify keywords and topic categories of the online information exchange. Both MMT and ART Providers were actively engaged in online communications. Referral and treatment adherence were the two most frequently discussed topic areas by both the MMT and ART Providers. Frequent cross-agency connections were observed. Online Provider Networks and communities could be built and useful to support treatment Providers to improve service integration.
