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A Survey on P4 Challenges in Software Defined networks: P4 Programming

IEEE ACCESS 2023年 11卷 54373-54387页

作者： Goswami, Bhargavi Kulkarni, Manasa Paulose, Joy Queensland Univ Technol Dept Comp Sci Brisbane Qld 4000 Australia CHRIST Dept Comp Sci Bengaluru 560029 Karnataka India

Software Defined networking (SDN) has been a prominent technology in the last decade that increases networking programmability. The SDN philosophy decouples the application, control, and data plane to increase the network programmability. The data plane is an essential but unsolved component that receives less attention than control and application planes. Traditionally, the data plane uses fixed functions that forward packets using a limited number of protocols. The P4 (Programming Protocol-independent Packet Processors) language makes it possible to program SDN data plane, which push the SDN to the next level. In the research community and industry, programming the data plane has garnered significant attention. Surprisingly, there has been no comprehensive reviews of programmable data-plane switches, which have many advantages in today's networks. The authors reviewed the evolution of networks from legacy to programmable data planes, explained the fundamentals of programmable switches, and summarized the network generation from traditional to programmable networks. In this paper, SDN is described from a P4-centric standpoint and discusses over 75 related research papers. Several taxonomies for the field are provided, outline potential research areas, and provide greater details regarding the patterns that have led to the development of this technology.

关键词： network programmability P4 language programmable switches software-defined networks data plane programmability

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Comprehensive Survey on T-SDN: Software-Defined networking for Transport networks

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IEEE COMMUNICATIONS SURVEYS AND TUTORIALS 2017年第4期19卷 2232-2283页

作者： Alvizu, Rodolfo Maier, Guido Kukreja, Navin Pattavina, Achille Morro, Roberto Capello, Alessandro Cavazzoni, Carlo Politecn Milan Dipartimento Elettron Informaz & Bioingn I-20133 Milan Italy Politecn Milan SWAN Networks I-20133 Milan Italy Telecom Italia SpA I-10148 Turin Italy

Paradoxically, with an ever-increasing traffic demand, today transport-network operators experience a progressive erosion of their margins. The alarms of change are set, and software define networking (SDN) is coming to the rescue with the promise of reducing capital expenditures and operational expenses. Driven by economic needs and network innovation facilities, today transport SDN (T-SDN) is a reality. It gained big momentum in the last years, however, in the networking industry, the transport network will be perhaps the last segment to embrace SDN, mainly due to the heterogeneous nature and complexity of the optical equipment composing it. This survey guides the reader through a fascinating technological adventure that provides an organic analysis of the T-SDN development and evolution considering contributions from: academic research, standardization bodies, industrial development, open source projects, and alliances among them. After creating a comprehensive picture of T-SDN, we provide an analysis of many open issues that are expected to need significant future work, and give our vision in this path toward a fully programmable and dynamic transport network.

关键词： Software defined networking optical transport network transport SDN software defined optical networking network programmability orchestration transport API network controller network virtualization network function virtualization OpenFlow GMPLS

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5G-EmPOWER: A Software-Defined networking Platform for 5G Radio Access networks

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IEEE TRANSACTIONS ON network AND SERVICE MANAGEMENT 2019年第2期16卷 715-728页

作者： Coronado, Estefania Khan, Shah Nawaz Riggio, Roberto FBK CREATE NET Wireless & Networked Syst I-38123 Trento Italy Ericsson Res S-16446 Stockholm Sweden

Software-defined networking (SDN) is making their way into the fifth generation of mobile communications. For example, 3GPP is embracing the concept of control-user plane separation (a cornerstone concept in SDN) in the 5G core and the radio access network (RAN). In this paper, we introduce a flexible, programmable, and open-source SDN platform for heterogeneous 5G RANs. The platform builds on an open protocol that abstracts the technology-dependent aspects of the radio access elements, allowing network programmers to deploy complex management tasks as policies on top of a programmable logically centralized controller. We implement the proposed solution as an extension to the 5G-EmPOWER platform and release the software stack (including the southbound protocol) under a permissive APACHE 2.0 license. Finally, the effectiveness of the platform is assessed through three reference use cases: 1) active network slicing;2) mobility management;and 3) load-balancing.

关键词： network management network programmability SDN 5G LTE open-source experimental evaluation

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Enhancing Orchestration and Infrastructure programmability in SDN With NOTORIETY

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IEEE ACCESS 2020年 8卷 195487-195502页

作者： Costa, Kevin Barros Dantas Silva, Felipe S. Schneider, Lucas M. Neto, Emidio Paiva Neto, Augusto Venancio Esposito, Flavio Sci & Technol Rio Grande Norte IFRN Fed Inst Educ LaTARC Res Lab BR-59015000 Natal RN Brazil Fed Univ Rio Grande Norte UFRN Dept Informat & Appl Math DIMAp Grad Program Syst & Comp PPgSC BR-59078970 Natal RN Brazil Inst Telecomunicacoes P-3810164 Aveiro Portugal St Louis Univ Dept Comp Sci St Louis MO 63103 USA

Software-Defined networking (SDN) controllers are nowadays expected to manage large infrastructures and services in a practical, efficient, and optimized way. To achieve such control, SDN networks should increase the automation of orchestration functions to fullfil both service and network management lifecycles. However, network management applications have stringent resource demands that orchestrators need to honor. Most of the available orchestrators focus on high-level approaches that rely exclusively on the Northbound API (NB-API). A few strategies have also been designed to optimize the controllers internal mechanisms through features enabled by the Southbound API (SB-API). However, such solutions do not focus on optimal information delivery to the orchestrator, a crucial property to provide prompt feedback in response to network events, and to potentially drive self-healing and auto-scaling properties. To address such need, we present NOTORIETY, an orchestration system that provides an abstraction for real-time SDN network controller event message handling. NOTORIETY is able to maximize the orchestration capabilities of SDN controllers including innovative features for processing and delivering network event information. NOTORIETYs design consists of mechanisms that empower SDN-controlled entities by applying filtering rules to efficiently control and optimize data flows provided by the SDN controller. We implemented a testbed to assess our NOTORIETY proposal following the guidelines provided in the RFC 8456, and we benchmark its performance over three SDN controllers (OpenDaylight, ONOS, and Floodlight). The evaluation results reveal the effectiveness of NOTORIETY in reducing the execution time of SDN requests, load processing, and overall data marshaling volume in several scenarios.

关键词： Optimization Process control Proposals network topology Topology Real-time systems Complexity theory Software-defined networking SDN controller orchestration network programmability

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Economic Viability of Software Defined networking (SDN)

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COMPUTER networkS 2018年 135卷 81-95页

作者： Karakus, Murat Durresi, Arjan Indiana Univ Purdue Univ Dept Comp & Informat Sci Indianapolis IN 46202 USA

Economical and operational facets of networks drive the necessity for significant changes towards fundamentals of networking architectures. Recently, the momentum of programmable networking attempts illustrates the significance of economic aspects of network technologies. Software Defined networking (SDN) has got the attention of researchers from both academia and industry as a means to decrease network costs and generate revenue for service providers due to features it promises in networking. In this article, we investigate how programmable network architectures, i.e. SDN technology, affect the network economics compared to traditional network architectures, i.e. MPLS technology. We define two metrics, Unit Service Cost Scalability and Cost-to-Service, to evaluate how SDN architecture performs compared to MPLS architecture. Also, we present mathematical models to calculate certain cost parts of a network. In addition, we compare different popular SDN control plane models, Centralized Control Plane (CCP), Distributed Control Plane (DCP), and Hierarchical Control Plane (HCP), to understand the economic impact of them with regards to the defined metrics. We use video traffic with different patterns for the comparison. This work aims at being a useful primer to providing insights regarding which technology and control plane model are appropriate for a specific service, i.e. video, for network owners to plan their investments. (C) 2018 Elsevier B.V. All rights reserved.

关键词： SDN Economics network programmability Cost CAPEX OPEX

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SDVoIP-A Software-Defined VoIP Framework For SIP And Dynamic QoS

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COMPUTER JOURNAL 2021年第2期64卷 254-263页

作者： Gandotra, Rahil Perigo, Levi Univ Colorado Interdisciplinaly Telecom Program 1111 Engn DrECOT 611530 UCB Boulder CO 80309 USA Univ Colorado Dept Comp Sci Boulder CO 80309 USA

Software-defined networking (SDN) allows for the decoupling of the control and data planes, enabling more programmability and a global view of the network. Previous research indicates that traditional applications recreated using SDN principles allow for more granularity and customization. In this research, we extend the insights behind SDN to develop a Voice over Internet Protocol (VoIP) framework with the objective to enhance traditional Session Initiation Protocol (SIP) operation and quality of service (QoS) approaches. The contributions of this research are 2-fold: first, an SIP control application is implemented, which communicates with an SDN controller to provide VoIP call registration and call routing capabilities, thereby eliminating the need for specialized SIP proxy hardware devices;second, a dynamic QoS application is developed that provides the ability to make network-wide QoS decisions based on real-time network measurements of latency, bandwidth and packet loss. Functional validation of the framework is performed to verify its operation. The experiment results indicate that the proposed framework allows for enhancements to traditional QoS implementations.

关键词： SDN VoIP network programmability OpenFlow SIP RTP QoS

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OpenFlow in the Small: A Flexible and Efficient network Acceleration Framework for Multi-Core Systems

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IEEE TRANSACTIONS ON network AND SERVICE MANAGEMENT 2014年第3期11卷 390-404页

作者： Bolla, Raffaele Bruschi, Roberto Lombardo, Chiara Podda, Fabio Univ Genoa Dept Elect Elect & Telecommun Engn & Naval Archit I-16145 Genoa Italy Univ Genoa Res Unit Natl Interuniv Consortium Telecommun CNIT I-16145 Genoa Italy

Multi-core processors optimized for networking applications typically combine general-purpose cores with offloading engines to relieve the processor cores of specialized packet processing tasks, such as parsing, classification, and security. Unfortunately, modern embedded operating systems still lack an effective and advanced hardware abstraction to exploit these aspects optimally. Based on these considerations, this paper proposes a novel framework, OpenFlow in the Small (OFiS), specifically designed to provide a flexible hardware abstraction layer for heterogeneous multi-core systems with advanced hardware accelerators for network offloading. OFiS represents such accelerators as standard OpenFlow switches inside the processor, moving the edge of the OpenFlow network management to the computational resources inside the end-boxes. As indicated in the experimental evaluation, OFiS exploits hardware parallelism and consolidates the software tasks at finer granularities.

关键词： network processors network programmability OpenFlow

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Optical switch emulation in programmable software router testbed

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PHOTONIC network COMMUNICATIONS 2013年第1期25卷 10-23页

作者： Aldaya, Ivan Cafini, Raul Cerroni, Walter Raffaelli, Carla Savi, Michele Monterrey Inst Technol & Higher Educ Ctr Elect & Telecommun Monterrey NL Mexico TecnoMarche Scarl IT Lab Ascoli Piceno Italy Univ Bologna Dept Elect Elect & Informat Engn G Marconi Bologna Italy Norwegian Univ Sci & Technol Dept Telemat N-7034 Trondheim Norway

A programmable optical router is a key enabler for dynamic service provisioning in Future Internet scenarios. It is equipped with optical switching hardware to forward information at hundreds of Gigabits/s rates and above, controlled and managed through modular and flexible procedures according to emerging standards. The possibility to test such costly optical architectures in terms of logical and physical performance, without implementing complex and expensive testbeds, is crucial to speed-up the development process of high-performance routers. To this purpose, this paper introduces the software-based emulation testbed of a programmable optical router, which is here developed and applied to test optical switching fabrics. Accurate characterization of the optical devices and physical layer aspects is implemented with the Click software router environment. Power loss and optical signal-to-noise-ratio evaluation are provided through accurate software representation of the physical characteristics of the optical devices employed. The scalability of the proposed emulation testbed is also assessed on standard PC hardware. All the obtained results prove the effectiveness of the proposed tool to emulate an optical router at different levels of granularity.

关键词： Optical networks network programmability Optical switching Optical components Software-defined networking

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Empowering networking research and experimentation through Software-Defined networking

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JOURNAL OF network AND COMPUTER APPLICATIONS 2016年第Jul.期70卷 140-155页

作者： Anan, Muhammad Al-Fuqaha, Ala Nasser, Nidal Mu, Ting-Yu Bustam, Husnain Alfaisal Univ Coll Engn Software Engn POB 50927 Riyadh 11533 Saudi Arabia Western Michigan Univ Dept Comp Sci 1903 W Michigan Ave Kalamazoo MI 49008 USA Purdue Univ Calumet Electr & Comp Engn 2200 169th St Hammond IN 46323 USA

Software-Defined networking (SDN) is an evolving network architecture influenced by the increasing popularity in the deployment of network Virtualization, cloud computing technologies, and the network ossification trend. It represents a new approach to managing, defining and building networks in order to fulfill the needs of the dynamic nature of present day's networking capabilities. In recent years, SDN has emerged as an exciting area of research challenging the current networking paradigm of designing and managing computer networks. SDN represents an extraordinary opportunity to rethink computer networks, enabling the design and deployment of a future Internet. This paper reviews SDN technologies, architectures, applications, underlying protocols, and deployments. It provides taxonomy of recent research works on SDN and highlights some recent practical experiments, with the goal of inspiring new applications and improving the future networking capabilities. (C) 2016 Elsevier Ltd. All rights reserved.

关键词： Software-Defined networking (SDN) Cloud computing network programmability network Virtualization OpenFlow Open vSwitch network Deployment network Functions Virtualization (NFV) Information Centric networking (ICN)

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Congestion Control for Datacenter networks: A Control-Theoretic Approach

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IEEE TRANSACTIONS ON PARALLEL AND DISTRIBUTED SYSTEMS 2023年第5期34卷 1682-1696页

作者： Menikkumbura, Danushka Taheri, Parvin Vanini, Erico Fahmy, Sonia Eugster, Patrick Edsall, Tom Purdue Univ Dept Comp Sci W Lafayette IN 47907 USA Cisco Syst Inc Datacenter Networking San Jose CA 95134 USA Univ SvizzeraItaliana USI Fac Informat CH-6904 Lugano Switzerland

In this article, 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. 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 load levels, compared to DCQCN. At the same time, RoCC can achieve 1.7 - 4.5x and 1.4 - 3.9x lower tail latency for long flows and 2.1 - 7x and 3.5 - 8.2x lower tail latency for short flows, compared to DCQCN and HPCC, respectively. We also find that RoCC does not require PFC. The functional components of RoCC can be efficiently implemented in P4 and FPGA-based switch hardware.

关键词： Switches Switching circuits Convergence Bandwidth PI control Throughput Hardware Congestion control datacenter network programmability RDMA

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