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IEEE/IFIP network Operations and Management Symposium (NOMS)

作者： Geier, Timo Fulda Univ Appl Sci Dept Appl Comp Sci Fulda Germany

ISBN: (纸本)9798350327939;9798350327946

Programmable, specialized chips are increasingly preferred over general-purpose CPUs because of their greater efficiency and flexibility. This trend extends to network infrastructures, where programmable devices transform the network into a distributed computing platform. This project aims to provide a framework for improving the performance of network functions by leveraging low-impact orchestration on acceleration hardware, such as programmable network switches. The focus lies on ensuring the isolation of network functions in the data plane, including tasks such as different validation checks for data plane and network function deployment code. The need for this solution was assessed. Based on this, a suitable architecture was designed, including a suitable manifest. Furthermore, an orchestrator based on this architecture is described and potential use cases (e.g. 5G/6G network integration) are discussed.

关键词： network Functions Container Multi-tenancy network programmability Hardware-accelerated Virtualization

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RoCC: Robust Congestion Control for RDMA 20

RoCC: Robust Congestion Control for RDMA

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16th International Conference on Emerging networking Experiments and Technologies

作者： Taheri, Parvin Menikkumbura, Danushka Vanini, Erico Fahmy, Sonia Eugster, Patrick Edsall, Tom Cisco Syst San Jose CA 95134 USA Purdue Univ W Lafayette IN 47907 USA Univ Svizzera Italiana Lugano Switzerland Tech Univ Darmstadt Darmstadt Germany

ISBN: (纸本)9781450379489

In this paper, we present RoCC, a robust congestion control approach for datacenter networks based on RDMA. RoCC leverages switch queue size as an input to a PI controller, which computes the fair data rate of flows in the queue, signaling it to the flow sources. The PI parameters are self-tuning to guarantee stability, rapid convergence, and fair and near-optimal throughput in a wide range of congestion scenarios. Our simulation and DPDK implementation results show that RoCC can achieve up to 7x reduction in PFC frames generated under high average load levels, compared to DCQCN. At the same time, RoCC can achieve up to 8x lower tail latency, compared to DCQCN and HPCC. We also find that RoCC does not require PFC. The functional components of RoCC are implementable in P4-based and fixed-function switch ASICs.

关键词： Datacenter Congestion Control RDMA network programmability

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An Architecture of Programmable network based on Adaptive SRv6 Policy 14

An Architecture of Programmable Network based on Adaptive SR...

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14th International Conference on Information and Communication Technology Convergence, ICTC 2023

作者： Yoo, Hyunkyung Byun, SungHyuk Yang, Sunhee Ko, Namseok Mobile Core Network Research Section Daejeon Korea Republic of

ISBN: (纸本)9798350313277

SRv6 is a source-based routing architecture in which a node steers packets by the service and topological requirements. Using programmable segments, SRv6 enables end-to-end service delivery to satisfy the network constraints of various services. In this paper, we present the architecture of programmable network in which the forwarding path is classified by the service flow and the adaptive path is decided according to the network load. We propose the adaptive SRv6 policy that dynamically selects the optimal segment lists among candidate path by monitoring the network performance. The adaptive SRv6 policy provides the flow-level path optimization that satisfies network QoS for each service flow. © 2023 IEEE.

关键词： adaptive BSID candidate-path network programmability Segment Routing SID list SRv6 SRv6 policy

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Design and Implementation of SDN-based Load Balancing in EPC

Design and Implementation of SDN-based Load Balancing in EPC

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作者： ORIKIIRIZA INNOCENT（伊纳森）北京邮电大学

学位级别：硕士

According to Cisco VNI,the number of connected devices will be three times as high as the global population in 2019(there will be nearly three networked devices per user).Also,it is anticipated that mobile device-generated data traffic will reach an annual run rate of 367 Exabytes and continue to grow significantly as a result of the increase of connected devices and the capabilities these devices *** significant growth in mobile traffic,new network services and applications are pushing carrier network operators to upgrade their systems in order to meet new requirements and increasing customer *** imposes challenges on the current cellular network architecture,such as high upgrade costs,complex operation and maintenance,and slow deployment of new innovations and other ***,the simultaneous connection establishment of multiple devices to the core network has also brought load balancing challenges inside the core ***'s mobile core network has several issues regarding its inherent design,which makes it harder to address the afore-mentioned load balancing challenges without radically changing core network *** addition,the current implementation of mobile core networks is very expensive and difficult to *** this dissertation,we are interested in introducing OpenFlow(OF)protocol into the current Long Term Evolution/Evolved Packet Core(LTE/EPC)architecture to achieve dynamic load balancing while improving the programmability of the *** dissertation begins with introducing Software-Defined networking(SDN),the current LTE mobile core network system and presents other basic concepts and technologies related to our research as the foundation for our dissertation *** research relevant to our work is also briefly ***,we present SDN-EPC network system architecture-our proposed LTE/EPC network system architecture based on SDN *** architectural model design and implementation is discus

关键词： SDN Evolved Packet Core(EPC)architecture load balancing network programmability implementation of EPC

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network programming as a service : an innovation friendly business model

Network programming as a service : an innovation friendly bu...

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作者： Jesus, Wanderson Paim de

Computer networks have evolved to accommodate a wide variety of services, such as streaming of high quality videos and delay-sensitive content delivery. These services have increased the demand for features not originally considered in the Internet. Aiming to address novel network demands quickly, some researchers proposed Programmable networks, in which network devices behavior can be changed using applications. Notwithstanding, such behavior might not be a consensus between computer network stakeholders. The emergence of Virtualized networks overcame this issue by allowing the coexistence of multiple virtual networks on the same physical infrastructure. Finally, the convergence of programmability and virtualization techniques are explored within a third concept, the Programmable Virtual networks (PVN). Faced with this new reality, network administrators are no longer just looking at network devices. They are looking at a system made of virtual devices and applications that define each virtual network behavior. This requires not just new tools and management approaches, over and above that, requires new thinking. PVN deployments are found mostly in shared experimental facilities (also known as testbeds) and Cloud Computing environments. Testbeds are very innovation friendly, but with strong limitations in regards to taking experimental solutions to production. On the other hand, Cloud computing is a great production environment, but presents flexibility and innovation restrictions once network solutions adopted are usually proprietary. Therefore, in this dissertation it is introduced network Programming as a Service (NPaaS), a new business model that aims to facilitate the conduct of innovative solutions for production environments. Different from traditional network business models, where end-users are just consumers of network services already available, in NPaaS, end-users are also able to develop and deploy novel network solutions. To support NPaaS, Programmab

关键词： Redes : Computadores network virtualization Computação em nuvem network programmability Gerencia : Redes : Computadores Software defined networking Cloud computing Dissertação

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Deploying and managing network services over programmable virtual networks

Deploying and managing network services over programmable vi...

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作者： Santos, Ricardo Luis dos

Several companies and standardization bodies have attempted to define standards and find solutions for networks that support virtualization and programmability (also known as Programmable Virtual networks - PVNs), such as Juniper Junos, Cisco ONE, OpenFlow, ETSI NFV, and IETF ForCES. These solutions provide an Execution Environment (EE) that supports the deployment of network Applications (NetApps). However, in the case of PVNs, several tasks are complex and repetitive, mainly because the PVN owners must have an extensive knowledge of the device instructions to deploy and manage NetApps. A few years ago, Apple and Google overcame similar shortcomings by introducing online marketplaces. The successful paradigm for mobile application stores could be applied to the networking market, and this could help PVN owners to deploy and manage NetApps in their PVNs. In this thesis, we review the state-of-the-art of network programmability and virtualization, as well as discuss their main drawbacks. Following this, we analyze the historical background of marketplaces with regard to networking paradigms to define the essential design goals for a reference network marketplace. Thus, inspired by the main drawbacks and essential design goals, we propose the App2net ecosystem. App2net empowers PVN owners, who do not know the specific features of the underlying infrastructure, to deploy and manage NetApps in PVNs formed of different EEs. We conducted a case study to evaluate our ecosystem, which contains all the steps for a third-party developer to describe and publish an innovative network service. Then, we describe the main interactions for a PVN owner when deploying and managing this network service in a PVN with heterogenous EEs. Also, we implemented a prototype of App2net to evaluate the feasibility and the impact in terms of the distribution time, CPU usage, and network overhead. When the baseline results are taken into account, App2net demonstrates an ability to reduce the dis

关键词： Redes : Computadores network programmability Programmable Virtual networks Gerencia : Redes : Computadores Redes virtuais network Applications network Marketplace Tese

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Mitigating the impact of controller failures on QoS robustness for software-defined wide area networks

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COMPUTER networkS 2024年 238卷

作者： Dou, Songshi Qi, Li Guo, Zehua Inst Technol Beijing 100081 Peoples R China Univ Hong Kong Hong Kong Peoples R China

Emerging cloud services and applications pose different Quality of Service (QoS) requirements for the network, where Software-Defined Wide Area networks (SD-WANs) play a crucial role in QoS provisioning by introducing network programmability into network flows to enable dynamic flow routing and ensure low data transmission latency for these applications. However, controller failures may happen in SD-WANs, and all programmable flows that the failed controller previously controlled will become offline and lose the network programmability, resulting in the degradation of QoS. Existing control recovery solutions propose to remap offline switches/flows to available active controllers but cannot promise good recovery performance due to the following two problems: (1) the recovery performance suffers from either coarse-grained remapping granularity or introducing extra processing delays, and (2) QoS robustness cannot be guaranteed in the design of recovery solution. To this end, we propose PREDATOR, a QoS-aware network programmability recovery scheme that utilizes the P4 Runtime enabled by existing P4 switches to achieve fine-grained per-flow remapping without introducing extra delays. Specifically, our proposed PREDATOR categorizes flows based on their QoS requirements and smartly recovers offline flows based on their priorities to guarantee the QoS robustness for high-priority flows. Simulation results under real-world topology demonstrate that our proposed PREDATOR can improve the recovered network programmability of high-priority flows by up to 505.5%, and substantially reduce the communication overhead of high-priority flows, compared with baselines.

关键词： Software-defined wide area networks Quality of Service network programmability

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Fault-Tolerance in the Scope of Software-Defined networking (SDN)

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IEEE ACCESS 2019年 7卷 124474-124490页

作者： Rehman, A. U. Aguiar, Rui L. Barraca, Joao Paulo Inst Telecomunicacoes P-3810193 Aveiro Portugal Univ Aveiro Dept Eletron Telecomunicacoes & Informat Campus Univ Santiago P-3810193 Aveiro Portugal

Fault-tolerance is an essential aspect of network resilience. Fault-tolerance mechanisms are required to ensure high availability and high reliability in systems. The advent of software-defined networking (SDN) has both presented new challenges and opened new paths to develop novel strategies, architectures, and standards to support fault-tolerance. In this survey, we address SDN fault-tolerance and discuss the OpenFlow fault-tolerance support for failure recovery. We highlight the mechanism used for failure recovery in Carrier-grade networks that includes detection and recovery phases. Furthermore, we highlight SDN-specific fault-tolerance issues and provide a comprehensive overview of the state-of-the-art SDN fault-tolerance research efforts. We then discuss and structure SDN fault-tolerance research according to three distinct SDN planes (i.e., data, control, and application). Finally, we conclude enumerating future research directions for SDN fault-tolerance development.

关键词： Software-defined networking fault-tolerance OpenFlow failure detection failure recovery fault-tolerance issues network programmability network softwarization mission-critical communications

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The Programmable Data Plane: Abstractions, Architectures, Algorithms, and Applications

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ACM COMPUTING SURVEYS 2021年第4期54卷 82-82页

作者： Michel, Oliver Bifulco, Roberto Retvari, Gabor Schmid, Stefan Univ Vienna Fac Comp Sci Wahringer Str 29 A-1090 Vienna Austria NEC Labs Europe Kurfursten Anlage 36 D-69115 Heidelberg Germany Budapest Univ Technol & Econ Magyar Tudosok Korutja 2 H-1117 Budapest Hungary

Programmable data plane technologies enable the systematic reconfiguration of the low-level processing steps applied to network packets and are key drivers toward realizing the next generation of network services and applications. This survey presents recent trends and issues in the design and implementation of programmable network devices, focusing on prominent abstractions, architectures, algorithms, and applications proposed, debated, and realized over the past years. We elaborate on the trends that led to the emergence of this technology and highlight the most important pointers fromthe literature, casting different taxonomies for the field, and identifying avenues for future research.

关键词： Programmable data planes network programmability packet processing in-network computation programmable switches

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Survey of Mechanisms for Inter-Domain SDN

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ZTE Communications 2017年第3期15卷 8-12页

作者： WANG Yangyang BI Jun Institute for Network Sciences and Cyberspace Tsinghua UniversityBeijing 100084China Department of Computer Science Tsinghua UniversityBeijing 100084China Tsinghua National Laboratory for Information Science and Technology(TNList) Tsinghua UniversityBeijing 100084China

Software defined networking(SDN) has been applied increasingly in practical networks. Currently, SDN is mainly used to improvethe flexibility and efficiency of datacenter networks, enterprise networks and wide-area networks(WAN). There also emerge somestudies that try to deploy SDN to inter-domain settings. In this article, we introduce the progress stages of inter-domain SDN andstudies related to each stage. Finally, we discuss the applications and challenges of inter-domain SDN.

关键词： software defined networking network programmability inter⁃domain SDN

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