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BETA
Sköldström, PontusORCID iD iconorcid.org/0000-0003-2464-8904
Alternative names
Publications (10 of 19) Show all publications
Tomkos, I., Rozic, C., Savi, M., Sköldström, P., Lopez, V., Chamania, M., . . . Gerstel, O. (2018). Application Aware Multilayer Control and Optimization of Elastic WDM Switched Optical Networks. In: 2018 Optical Fiber Communications Conference and Exposition (OFC): . Paper presented at 2018 Optical Fiber Communications Conference and Exposition (OFC). 11-15 March, 2018 (pp. 1-3).
Open this publication in new window or tab >>Application Aware Multilayer Control and Optimization of Elastic WDM Switched Optical Networks
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2018 (English)In: 2018 Optical Fiber Communications Conference and Exposition (OFC), 2018, p. 1-3Conference paper, Published paper (Refereed)
Abstract [en]

In dynamic networks with diverse application requirements, Software Defined Networking (SDN) principles enable application-aware in-operation planning. Project ACINO built a network orchestrator as the connecting component between network applications and the underlying network infrastructure.

Keywords
optical fibre networks, optical switches, software defined networking, switched networks, telecommunication network planning, wavelength division multiplexing, network orchestrator, network applications, application aware multilayer control, dynamic networks, application-aware in-operation planning, network infrastructure, elastic WDM switched optical network optimization, ACINO project, Planning, IP networks, Optimization, Optical fiber networks, Resource management, Repeaters
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-35255 (URN)10.1364/OFC.2018.Th1D.4 (DOI)2-s2.0-85050014548 (Scopus ID)9781943580385 (ISBN)
Conference
2018 Optical Fiber Communications Conference and Exposition (OFC). 11-15 March, 2018
Available from: 2018-10-15 Created: 2018-10-15 Last updated: 2019-06-18Bibliographically approved
Marsico, A., Chamania, M., Doriguzzi-Corin, R., Matrakidis, C., Klonidis, D., Sköldström, P., . . . Siracusa, D. (2018). Enriching intent-based SDN to ease customer service management in transport networks. In:  Find other works by these authors Advanced Photonics 2018 (BGPP, IPR, NP, NOMA, Sensors, Networks, SPPCom, SOF) OSA Technical Digest (online) (Optical Society of America, 2018), paper NeW2F.2: . Paper presented at Photonic Networks and Devices 2018 Zurich Switzerland 2–5 July 2018.
Open this publication in new window or tab >>Enriching intent-based SDN to ease customer service management in transport networks
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2018 (English)In:  Find other works by these authors Advanced Photonics 2018 (BGPP, IPR, NP, NOMA, Sensors, Networks, SPPCom, SOF) OSA Technical Digest (online) (Optical Society of America, 2018), paper NeW2F.2, 2018Conference paper, Published paper (Refereed)
Abstract [en]

Intent-based Software-Defined Networking can automate mapping of customer services to transport services. We demonstrate this using a multi-layer orchestrator that provisions a complex customer service over an IP/Optical testbed.

Keywords
Photonic devices, Photonics, Customer service management, Customer services, Transport networks, Transport services, Sales
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-34996 (URN)10.1364/NETWORKS.2018.NeW2F.2 (DOI)2-s2.0-85051246167 (Scopus ID)9781557528209 (ISBN)
Conference
Photonic Networks and Devices 2018 Zurich Switzerland 2–5 July 2018
Available from: 2018-08-27 Created: 2018-08-27 Last updated: 2019-06-18Bibliographically approved
Soenen, T., Sahhaf, S., Tavernier, W., Sköldström, P., Colle, D. & Pickavet, M. (2017). A model to select the right infrastructure abstraction for Service Function Chaining. In: 2016 IEEE Conference on Network Function Virtualization and Software Defined Networks, NFV-SDN 2016: . Paper presented at 2016 IEEE Conference on Network Function Virtualization and Software Defined Networks, NFV-SDN 2016, 7 November 2016 through 10 November 2016 (pp. 233-239).
Open this publication in new window or tab >>A model to select the right infrastructure abstraction for Service Function Chaining
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2017 (English)In: 2016 IEEE Conference on Network Function Virtualization and Software Defined Networks, NFV-SDN 2016, 2017, p. 233-239Conference paper, Published paper (Refereed)
Abstract [en]

Through network function virtualization (NFV), telecom providers aim to flexibly re-use generic-purpose hardware to provide services on-demand and in an agile way. Service function chaining is becoming the preferred model to describe the characteristics of the packet-processing network functions which, together, form these services. NFV allows for network function embedding freedom, creating new dynamics between providers and the users requesting services. Users want this freedom to optimise the performance of their requested services, while providers aim to optimise their resource cost with it. This trade-off is heavily influenced by how the available infrastructure is exposed to the users. In this paper, we present an infrastructure abstraction model for network, compute and storage resources that exposes the infrastructure in an abstracted manner. We use this abstraction to propose a solution for the placement freedom trade-off problem by studying its relation with metrics that capture both the user's and the provider's aspects. We conclude with a heuristic that determines the right abstraction for particular scenarios.

Keywords
Abstracting, Economic and social effects, Optimization, Software defined networking, Transfer functions, Virtual reality, Virtualization, Abstraction model, Network functions, Packet processing, Service functions, Services on demand, Storage resources, Telecom providers, Trade-off problem, Network function virtualization
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-30931 (URN)10.1109/NFV-SDN.2016.7919503 (DOI)2-s2.0-85020031674 (Scopus ID)9781509009336 (ISBN)
Conference
2016 IEEE Conference on Network Function Virtualization and Software Defined Networks, NFV-SDN 2016, 7 November 2016 through 10 November 2016
Available from: 2017-09-07 Created: 2017-09-07 Last updated: 2019-06-18Bibliographically approved
Marsico, A., Santuari, M., Savi, M., Siracusa, D., Ghafoor, A., Junique, S. & Sköldström, P. (2017). An interactive intent-based negotiation scheme for application-centric networks. In: 2017 IEEE Conference on Network Softwarization: Softwarization Sustaining a Hyper-Connected World: en Route to 5G, NetSoft 2017. Paper presented at 2017 IEEE Conference on Network Softwarization, NetSoft 2017, 3 July 2017 through 7 July 2017. Bologna Italy.
Open this publication in new window or tab >>An interactive intent-based negotiation scheme for application-centric networks
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2017 (English)In: 2017 IEEE Conference on Network Softwarization: Softwarization Sustaining a Hyper-Connected World: en Route to 5G, NetSoft 2017, 2017Conference paper, Published paper (Refereed)
Abstract [en]

The demonstration presents the first implementation of a resource negotiation scheme between users and a network for the provisioning of application-aware connectivity services. This active interaction enables the users, who request connectivity services with multiple application requirements, to select an alternative solution when the network does not have enough resources to satisfy the original requests.

Keywords
ONOS, Resource Negotiation, Software-Defined Networking, Alternative solutions, Application-centric, Connectivity services, Multiple applications, Negotiation schemes, Software defined networking
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:ri:diva-32498 (URN)10.1109/NETSOFT.2017.8004251 (DOI)2-s2.0-85029383027 (Scopus ID)9781509060085 (ISBN)
Conference
2017 IEEE Conference on Network Softwarization, NetSoft 2017, 3 July 2017 through 7 July 2017. Bologna Italy
Available from: 2017-11-09 Created: 2017-11-09 Last updated: 2019-06-18Bibliographically approved
Sköldström, P., Junique, S., Ghafoor, A., Marsico, A. & Siracusa, D. (2017). DISMI - An intent interface for application-centric transport network services. In: International Conference on Transparent Optical Networks: . Paper presented at 19th International Conference on Transparent Optical Networks, ICTON 2017, 2 July 2017 through 6 July 2017. Girona Spain.
Open this publication in new window or tab >>DISMI - An intent interface for application-centric transport network services
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2017 (English)In: International Conference on Transparent Optical Networks, 2017Conference paper, Published paper (Refereed)
Abstract [en]

Application-centric networking is a novel approach to construct transport networks that allows application-specific requirements to be taken into account through the entire service provisioning process: the service offered to each application is differentiated at each layer of the transport network, from IP to optical. This approach replaces the grooming of traffic with different requirements into a shared path in the transport layer, and allows for a finer control and utilization of network resources by network operators. To make this concept viable, an interface for requesting a connectivity service by applications requires an abstraction with respect to the various underlying network technologies. Interfaces based on the concept of Intents provide such an abstraction: applications can describe what they need from the network (their requirements) rather than how to achieve them. This paper describes the design and implementation of the solution we propose: DISMI, the Intent-based North-Bound Interface of a network controller.

Keywords
multi-layer networks, network orchestrator, northbound interface (NBI), software-defined networks (SDN)
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:ri:diva-32496 (URN)10.1109/ICTON.2017.8025180 (DOI)2-s2.0-85029394043 (Scopus ID)9781538608586 (ISBN)
Conference
19th International Conference on Transparent Optical Networks, ICTON 2017, 2 July 2017 through 6 July 2017. Girona Spain
Available from: 2017-11-09 Created: 2017-11-09 Last updated: 2019-06-18Bibliographically approved
Chamania, M., Szyrkowiec, T., Santuari, M., Siracusa, D., Autenrieth, A., Lopez, V., . . . Junique, S. (2017). Intent-based in-flight service encryption in multi-layer transport networks. In: 2017 Optical Fiber Communications Conference and Exhibition, OFC 2017 - Proceedings: . Paper presented at 2017 Optical Fiber Communications Conference and Exhibition, OFC 2017, 19 March 2017 through 23 March 2017.
Open this publication in new window or tab >>Intent-based in-flight service encryption in multi-layer transport networks
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2017 (English)In: 2017 Optical Fiber Communications Conference and Exhibition, OFC 2017 - Proceedings, 2017Conference paper, Published paper (Refereed)
Abstract [en]

We demonstrate multi-layer encrypted service provisioning via the ACINO orchestrator. ACINO combines a novel intent interface with an ONOS-based SDN orchestrator to facilitate encrypted services at IP, Ethernet and optical network layers.

Keywords
Cryptography, Network layers, Optical fibers, Flight service, Multi-layer transport networks, Service provisioning, Optical fiber communication
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-30909 (URN)10.1364/OFC.2017.Tu3L.10 (DOI)2-s2.0-85025831156 (Scopus ID)9781943580231 (ISBN)
Conference
2017 Optical Fiber Communications Conference and Exhibition, OFC 2017, 19 March 2017 through 23 March 2017
Available from: 2017-09-07 Created: 2017-09-07 Last updated: 2019-06-18Bibliographically approved
Sköldström, P., Rozic, C. & Pedreno-Manresa, J. J. (2017). Making powerful friends: Introducing ONOS and Net2Plan to each other. In: International Conference on Transparent Optical Networks: . Paper presented at 19th International Conference on Transparent Optical Networks, ICTON 2017, 2 July 2017 through 6 July 2017. Girona Spain.
Open this publication in new window or tab >>Making powerful friends: Introducing ONOS and Net2Plan to each other
2017 (English)In: International Conference on Transparent Optical Networks, 2017Conference paper, Published paper (Refereed)
Abstract [en]

In this paper, we present our efforts for integrating network control and network planning, connecting the popular open-source ONOS control platform with Net2Plan, an open source network planner. The integration allows ONOS to use Net2Plan, combined with our resource allocation framework, as an on-line network optimization tool, calculating and re-routing paths as new requests arrive. It also lets Net2Plan obtain an up-to-date topology from ONOS. Net2Plan can then use the topology and our algorithms to perform planning operations such as investigating hypothetical questions about consequences of network failures or additional network equipment. The interface also lets the paths computed by the algorithms running on Net2Plan to be transferred to ONOS and implemented in the running network. While we currently only support IP/Optical networks, additional layers could easily be incorporated. As an interesting side-effect, code used for network simulation can be instrumented and applied to the real network.

Keywords
network control, network planning, path computation element, software-defined networking
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:ri:diva-32495 (URN)10.1109/ICTON.2017.8025040 (DOI)2-s2.0-85031032931 (Scopus ID)9781538608586 (ISBN)
Conference
19th International Conference on Transparent Optical Networks, ICTON 2017, 2 July 2017 through 6 July 2017. Girona Spain
Available from: 2017-11-09 Created: 2017-11-09 Last updated: 2019-06-18Bibliographically approved
John, W., Moradi, F., Pechenot, B. & Sköldström, P. (2017). Meeting the observability challenges for VNFs in 5G systems. In: Proceedings of the IM 2017 - 2017 IFIP/IEEE International Symposium on Integrated Network and Service Management: . Paper presented at 15th IFIP/IEEE International Symposium on Integrated Network and Service Management, IM 2017, 8 May 2017 through 12 May 2017.Lisbon Portugal (pp. 1127-1130).
Open this publication in new window or tab >>Meeting the observability challenges for VNFs in 5G systems
2017 (English)In: Proceedings of the IM 2017 - 2017 IFIP/IEEE International Symposium on Integrated Network and Service Management, 2017, p. 1127-1130Conference paper, Published paper (Refereed)
Abstract [en]

5G mobile communication systems will need to accommodate a variety of use-cases, resulting in a diverse set of requirements. To meet these requirements, 5G systems take advantage of modern virtualization possibilities offered by Network Function Virtualization (NFV), enabling deployment agility and dynamicity of virtualized network functions. With the transformation of telecom towards virtualized environments, advanced observability possibilities gain increasing importance as one of the essential prerequisites, especially for successful DevOps operations. However, deployment agility also puts specific requirements on monitoring solutions in order to adapt automatically and continuously to frequent changes in service deployments. In this short-paper, we establish and discuss essential properties of observability systems for virtual network functions in a 5G context. We take these properties as guiding design principles for our software-defined monitoring framework and outline how to evolve our existing components towards a flexible, scalable, and programmable observability solution for microservice-based NFV with features for increased manageability.

Keywords
5G mobile communication systems, Mobile telecommunication systems, Observability, Radio broadcasting, Transfer functions, Virtual reality, Virtualization, Design Principles, G-system, Monitoring frameworks, Network functions, Service deployment, Telecom, Virtual networks, Virtualized environment, Network function virtualization
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:ri:diva-32502 (URN)10.23919/INM.2017.7987445 (DOI)2-s2.0-85029455903 (Scopus ID)9783901882890 (ISBN)
Conference
15th IFIP/IEEE International Symposium on Integrated Network and Service Management, IM 2017, 8 May 2017 through 12 May 2017.Lisbon Portugal
Available from: 2017-11-09 Created: 2017-11-09 Last updated: 2019-06-18Bibliographically approved
Van Rossem, S., Cai, X., Cerrato, I., Danielsson, P., Németh, F., Pechenot, B., . . . John, W. (2017). NFV service dynamicity with a DevOps approach: Insights from a use-case realization. In: Proceedings of the IM 2017 - 2017 IFIP/IEEE International Symposium on Integrated Network and Service Management: . Paper presented at 15th IFIP/IEEE International Symposium on Integrated Network and Service Management, IM 2017, 8 May 2017 through 12 May 2017 (pp. 674-679).
Open this publication in new window or tab >>NFV service dynamicity with a DevOps approach: Insights from a use-case realization
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2017 (English)In: Proceedings of the IM 2017 - 2017 IFIP/IEEE International Symposium on Integrated Network and Service Management, 2017, p. 674-679Conference paper, Published paper (Refereed)
Abstract [en]

This experience paper describes the process of leveraging the NFV orchestration platform built in the EU FP7 project UNIFY to deploy a dynamic network service exemplified by an elastic router. Elasticity is realized by scaling dataplane resources as a function of traffic load. To achieve this, the service includes a custom scaling logic and monitoring capabilities. An automated monitoring framework not only triggers elastic scaling, but also a troubleshooting process which detects and analyzes anomalies, pro-actively aiding both dev and ops personnel. Such a DevOps-inspired approach enables a shorter update cycle to the running service. We highlight multiple learnings yielded throughout the prototype realization, focussing on the functional areas of service decomposition and scaling; programmable monitoring; and automated troubleshooting. Such practical insights will contribute to solving challenges such as agile deployment and efficient resource usage in future NFV platforms.

Keywords
Agile deployments, Automated monitoring, Dynamic network, Functional areas, Monitoring capabilities, Resource usage, Service decompositions, Traffic loads, Network function virtualization
National Category
Natural Sciences
Identifiers
urn:nbn:se:ri:diva-35345 (URN)10.23919/INM.2017.7987357 (DOI)2-s2.0-85029434688 (Scopus ID)9783901882890 (ISBN)
Conference
15th IFIP/IEEE International Symposium on Integrated Network and Service Management, IM 2017, 8 May 2017 through 12 May 2017
Note

Funding details: 619609

Available from: 2018-10-23 Created: 2018-10-23 Last updated: 2019-06-18Bibliographically approved
John, W., Marchetto, G., Németh, F., Sköldström, P., Steinert, R., Meirosu, C., . . . Pentikousis, K. (2017). Service provider DevOps. IEEE Communications Magazine, 55(1), 204-211, Article ID 7823363.
Open this publication in new window or tab >>Service provider DevOps
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2017 (English)In: IEEE Communications Magazine, ISSN 0163-6804, E-ISSN 1558-1896, Vol. 55, no 1, p. 204-211, article id 7823363Article in journal (Refereed) Published
Abstract [en]

Although there is consensus that software defined networking and network functions virtualization overhaul service provisioning and deployment, the community still lacks a definite answer on how carrier-grade operations praxis needs to evolve. This article presents what lies beyond the first evolutionary steps in network management, identifies the challenges in service verification, observability, and troubleshooting, and explains how to address them using our Service Provider DevOps (SP-DevOps) framework. We compendiously cover the entire process from design goals to tool realization and employ an elastic version of an industry-standard use case to show how on-the-fly verification, software-defined monitoring, and automated troubleshooting of services reduce the cost of fault management actions. We assess SP-DevOps with respect to key attributes of software-defined telecommunication infrastructures both qualitatively and quantitatively, and demonstrate that SP-DevOps paves the way toward carrier-grade operations and management in the network virtualization era.

Keywords
Verification, Virtual reality, In-network management, Industry standards, Network functions, Network virtualization, On-the fly verification, Overhaul services, Service verification, Telecommunication infrastructures, Internet service providers
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:ri:diva-29385 (URN)10.1109/MCOM.2017.1500803CM (DOI)2-s2.0-85010006524 (Scopus ID)
Available from: 2017-05-08 Created: 2017-05-08 Last updated: 2019-06-18Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0003-2464-8904

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