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Software-Defined networking: On the Verge of a Breakthrough?

COMPUTER 2013年第7期46卷 10-12页

作者： Ortiz, Sixto, Jr.

Many experts predict that software-defined networking, a technology that's been highly touted for several years, will soon finally begin gaining ground in the marketplace.

关键词： Software Development Software Architecture Servers Virtualization Open Daylight Project networking Software Defined networking SDN API network programmability Control Plane Data Plane Open network Foundation ONF Open Flow

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End-to-end programmable, cloud-based virtualized HetNet: Advances made & challenges to address

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COMPUTER COMMUNICATIONS 2017年 105卷 14-32页

作者： Rahman, M. Moshiur Despins, Charles Affes, Sofiene Univ Quebec ETS Montreal PQ Canada Univ Quebec INRS EMT Montreal PQ Canada

Future networks (5G and beyond) will demand provisioning of novel services with a varied range of service requirements, and an order of magnitude increase of wireless data traffic, while at the same time decreasing the network operation cost. To address these issues, wireless network virtualization is seen as a key enabling technology for future networks. Virtualization offers cost-effective and efficient resource utilization by sharing the resources among multiple operators. Also, in contrast to traditional service specific inflexible network implementations, adoption of innovative network technologies demand certain level of flexibility and control over the networking fabric. In this respect, we argue that, for realizing a programmable and flexible heterogeneous virtual network infrastructure, software defined networking (SDN) & cloud computing technologies are the key tools to leverage on. This will ensure efficient resource utilization through sharing, enable programming of the underlying heterogeneous network infrastructure as a system and provide on-demand, elastic resource provisioning. In this paper, we lay out the key requirements and architectural components of end-to-end programmable heterogeneous virtual wireless networks (HVWNs). To report on the advances made in the pertinent technologies in realizing a HVWN architecture, we also present a brief survey of research on wireless network that leverage SDN, programmable radio plane and cloud computing technologies. We also investigate various actors and their roles in such HVWN environment and address various research issues and challenges in realizing such an architecture. (C) 2017 Elsevier B.V. All rights reserved.

关键词： Heterogeneous networks network programmability Software defined networking Cloud computing Wireless network virtualization

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Soft-W-TSN: Extending Time-Sensitive networking Capabilities to Wi-Fi using Virtualized Elements

Soft-W-TSN: Extending Time-Sensitive Networking Capabilities...

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4th IEEE Conference on network Function Virtualization / 9th Software Defined networks Conference (IEEE NFV-SDN)

作者： Miranda, Gilson, Jr. Haxhibeqiri, Jetmir Macedo, Daniel F. Marquez-Barja, Johann M. Univ Antwerp IDLab imec Antwerp Belgium Univ Ghent IDLab imec Ghent Belgium Univ Fed Minas Gerais Comp Sci Dept Belo Horizonte MG Brazil

ISBN: (纸本)9798350302547

Industrial processes are becoming increasingly complex, demanding accurate monitoring and timely communication for process correction and optimization actions. Time-Sensitive networking (TSN) comprises a set of standards being developed by IEEE to enable reliable and bounded low-latency communication over Ethernet networks. These standards allow an operator to have more control over traffic prioritization and latency, and offer features to enhance network communication reliability. Extending such features to wireless networks is a natural step in achieving more flexible deployments and supporting use cases involving mobility. In this work, we present an architecture and proof-of-concept to support extending TSN capabilities to Wi-Fi deployments and to enable flexible deployments of WiFi access points tailored for different use cases. We show the experimental results with a testbed highlighting the main functionalities implemented to support an example use case.

关键词： TSN network programmability SDN

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Orchestrating Multi-Tenant Code Updates Across Multiple Programmable Switches

Orchestrating Multi-Tenant Code Updates Across Multiple Prog...

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IEEE/IFIP network Operations and Management Symposium (NOMS)

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

ISBN: (纸本)9798350327939;9798350327946

In recent years, programmable devices delivering accelerated hardware-assisted network functions became more prevalent, esp. in data center and service provider networks. While these devices allow for greater flexibility, they are also more expensive and therefore pay off for providers when used by several tenants. However, code updates rolled out by a tenant negatively affect other customers' on the same hardware due to short interruptions during the update. To overcome these deficiencies, we extended our previously published orchestrator for multi-tenant code updates to be aware of multiple devices and surrounding network context. The new implementation allows seamless and gradual multi-tenant code updates, e.g., in service provider or data center networks including tests to minimize negative cross-tenant interference caused by the code updates.

关键词： Hardware-accelerated network Functions Orchestration Multi-tenancy network programmability

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DyPro: Dynamic Probing Planning for In-Band network Telemetry 27

DyPro: Dynamic Probing Planning for In-Band Network Telemetr...

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IEEE Symposium on Computers and Communications (ISCC)

作者： Dallanora, Leandro M. Castro, Ariel G. da Costa Filho, Roberto I. T. Rossi, Fabio D. Lorenzon, Arthur F. Luizelli, Marcelo C. Fed Inst Farroupilha IFFAR Jaguari RS Brazil Fed Inst Sul Rio Grandense IFSul Pelotas RS Brazil Fed Univ Pampa UNIPAMPA Bage RS Brazil

ISBN: (纸本)9781665497923

In-band network Telemetry (INT) is a novel network monitoring mechanism that improves fine-grained network visibility. Despite the increasing research efforts towards the orchestration of INT data acquisition, little has yet been done to efficiently collect telemetry data from the network considering monitoring applications requirements. In this paper, we introduce DyPro - a dynamic probing planning for INT. In particular, DyPro ensures that telemetry dependencies are always satisfied by monitoring application requirements. We theoretically formalize it as a Mixed-Integer Linear Programming (MILP) optimization model and propose a heuristic procedure to efficiently solve it. Results show that DyPro can outperform state-of-the-art solutions by up to 5x regarding the percentage of monitoring applications satisfied.

关键词： In-band network Telemetry INT network programmability

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SDNMA: A Software-defined, Dynamic network Manipulation Application to Enhance BGP Functionality 20

SDNMA: A Software-defined, Dynamic Network Manipulation Appl...

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20th IEEE International Conference on High Performance Computing and Communications (HPCC) / 16th IEEE International Conference on Smart City (SmartCity) / 4th IEEE International Conference on Data Science and Systems (DSS)

作者： Gandotra, Rahil Perigo, Levi Univ Colorado Interdisciplinary Telecom Program Boulder CO 80309 USA

ISBN: (纸本)9781538666142

Software-defined networking (SDN) is reshaping the networking paradigm. The previous studies on SDN show that SDN implementations have advantages over traditional networks. Enhancing the existing SDN functionality to the global network level, this paper examines how utilizing the flexibility and programmability of SDN will benefit both inter-AS and intra-AS Border Gateway Protocol (BGP) functionality. This research proposes a software-defined dynamic network manipulation application (SDNMA) that provides dynamic, real-time, application-based network manipulation when peering with traditional eBGP peers. Our results show that the network-aware application can dynamically manipulate paths in SDN per BGP updates received from neighbors, converge the network if a traditional BGP peering connection is lost, limit the number of iBGP speakers inside the AS, and make application-based traffic engineering decisions based on real-time network information such as throughput, delay, and loss.

关键词： BGP SDN network programmability OpenFlow Ryu Python REST API network automation SDN controller

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iMPROVE: Enhancing the Introduction of Services on Programmable Virtual networks 31

iMPROVE: Enhancing the Introduction of Services on Programma...

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31st IEEE International Conference on Advanced Information networking and Applications (IEEE AINA)

作者： dos Santos, Ricardo Luis Franco, Muriel Figueredo Scheid, Eder John Pfitscher, Ricardo Jose Granville, Lisandro Zambenedetti Rockenbach Tarouco, Liane M. Univ Fed Rio Grande do Sul Inst Informat Porto Alegre RS Brazil

ISBN: (纸本)9781509060290

Programmable Virtual networks (PVNs) make the network more flexible and allow the fast introduction of new services. However, several shortcomings hamper their wider adoption, including: (i) the extensive knowledge required to configure and manage the NetApps;(ii) the lack of descriptors to detail all nuances of the NetApps;and (iii) there is no solution that enables to distribute and configure NetApps over distinct technologies. Therefore, we propose iMPROVE to simplify the introduction of services in PVNs, enhancing the distribution of NetApps. We also extend the ETSI network service descriptor to support distinct technologies as well as to represent conflict issues. We demonstrate evidence of iMPROVE's feasibility in a case study and compare it with the main solutions for distributing and deploying applications over multiple platforms.

关键词： network programmability network Virtualization Programmable Virtual networks Future Internet

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Satellite networking in the Context of Green, Flexible and Programmable networks (Invited Paper) 1

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6th International Conference on Personal Satellite Services (PSATS)

作者： Davoli, Franco Univ Genoa Res Unit Dept Elect Elect Telecommun Engn & Naval Architec CNIT Via Opera Pia 13 I-16145 Genoa Italy

ISBN: (数字)9783319470818

ISBN: (纸本)9783319470818;9783319470801

In order to support heterogeneous services, using the information generated by a huge number of communicating devices, the Future Internet should be more energy-efficient, scalable and flexible than today's networking platforms, and it should allow a tighter integration among heterogeneous network segments (fixed, cellular wireless, and satellite). Flexibility and in-network programmability brought forth by Software Defined networking (SDN) and network Functions Virtualization (NFV) appear to be promising tools for this evolution, together with architectural choices and techniques aimed at improving the network energy efficiency (Green networking). As a result, optimal dynamic resource allocation strategies should be readily available to support the current workload generated by applications at the required Quality of Service/Quality of Experience (QoS/QoE) levels, with minimum energy expenditure. In this framework, we briefly explore the above-mentioned paradigms, and describe their potential application in a couple of satellite networking related use cases, regarding traffic routing and gateway selection, and satellite swarms, respectively.

关键词： network flexibility network programmability SDN NFV OpenFlow Satellite networking

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FEDCON: An embeddable Framework for Managing MOC Functions and Interfaces in Federated Software networks 17

FEDCON: An embeddable Framework for Managing MOC Functions a...

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IFIP/IEEE International Symposium on Integrated network Management (IM)

作者： Steinke, Michael Hommel, Wolfgang Univ Bundeswehr Munchen Comp Sci Dept Neubiberg Germany

ISBN: (纸本)9783903176324

Software networks (SN), combining network virtualization, system virtualization, NFV, and SDN, are highly suitable for the establishment of federated loose infrastructures, e. g., due to their flexibility, expandability, and concealment of geographical segregation of IT resources. Current management platforms for suchlike SNs, however, almost entirely omit network federation with its organizational aspects and cannot handle network heterogeneity. In this paper, in order to contribute to close this gap, we do not strive for a stand-alone solution, but present the FEDerated CONtrol (FEDCON) framework, which is designed to be embeddable into existing platforms. It facilitates access to a federated SN's functionality by providing the modeling and secure invocation of functions and interfaces of network components, like SDN-controllers or hypervisors. FEDCON considers federation-specific organisational aspects like geographically distributed data centers, administrative domains, and use-case-specific adaptable access controls. FEDCON is implemented in Lua, exploiting its focus on embeddability into existing software.

关键词： SDN NFV federated infrastructure network management network programmability management platform

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Flexible Wired/Wi-Fi TSN networking through SDN and Soft Traffic Control

Flexible Wired/Wi-Fi TSN Networking through SDN and Soft Tra...

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4th IEEE Conference on network Function Virtualization / 9th Software Defined networks Conference (IEEE NFV-SDN)

作者： Miranda, Gilson, Jr. Haxhibeqiri, Jetmir Hoebeke, Jeroen Moerman, Ingrid Macedo, Daniel F. Marquez-Barja, Johann M. Univ Antwerp IDLab imec Antwerp Belgium Univ Ghent IDLab imec Ghent Belgium Univ Fed Minas Gerais Comp Sci Dept Belo Horizonte MG Brazil

ISBN: (纸本)9798350302547

Industrial-grade applications demand reliable, deterministic performance. Time-Sensitive networking (TSN) caters to this by enabling precise traffic control, primarily in wired setups. Recent Wi-Fi technologies are moving forward to support TSN features. Seamless multi-domain Wired/Wi-Fi communication requires solutions for synchronization, interoperability, scheduling, and monitoring. Current Software-Defined networking (SDN) controllers for TSN fall short of this support. In this demo, we showcase our modular SDN TSN Controller architecture and its components for traffic scheduling and finegrained network telemetry. The controller allows us to control a TSN network comprising Wired and Wi-Fi nodes, with real-time per-flow monitoring and schedule reconfiguration.

关键词： TSN network programmability SDN

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