--- _id: '3345' abstract: - lang: eng text: "Dynamically steering flows through virtualized net- work function instances is a key enabler for elastic, on-demand deployments of virtualized network functions. This becomes par- ticular challenging when stateful functions are involved, necessi- tating state management. The problem with existing solutions is that they typically embrace state migration and flow rerouting jointly, imposing a huge set of requirements on the on-boarded VNFs, e.g., solution-specific state management interfaces.\r\nIn this paper, we introduce the seamless handover proto- col (SHarP). It provides an easy-to-use, loss-less, and order- preserving flow rerouting mechanism that is not fixed to a single state management approach. This allows VNF vendors to implement or use the state management solution of their choice. SHarP supports these solutions with additional information when flows are migrated. Further, we show how SHarP significantly reduces the buffer usage at a central (SDN) controller, which is a typical bottleneck in existing solutions. Our experiments show that SHarP uses a constant amount of controller buffer, irrespective of the time taken to migrate the VNF state." author: - first_name: Manuel full_name: Peuster, Manuel id: '13271' last_name: Peuster - first_name: Hannes full_name: Küttner, Hannes last_name: Küttner - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: 'Peuster M, Küttner H, Karl H. Let the state follow its flows: An SDN-based flow handover protocol to support state migration. In: 4th IEEE International Conference on Network Softwarization (NetSoft 2018). Montreal. doi:10.1109/NETSOFT.2018.8460007' apa: 'Peuster, M., Küttner, H., & Karl, H. (n.d.). Let the state follow its flows: An SDN-based flow handover protocol to support state migration. In 4th IEEE International Conference on Network Softwarization (NetSoft 2018). Montreal. https://doi.org/10.1109/NETSOFT.2018.8460007' bibtex: '@inproceedings{Peuster_Küttner_Karl, place={Montreal}, title={ Let the state follow its flows: An SDN-based flow handover protocol to support state migration}, DOI={10.1109/NETSOFT.2018.8460007}, booktitle={4th IEEE International Conference on Network Softwarization (NetSoft 2018)}, author={Peuster, Manuel and Küttner, Hannes and Karl, Holger} }' chicago: 'Peuster, Manuel, Hannes Küttner, and Holger Karl. “ Let the State Follow Its Flows: An SDN-Based Flow Handover Protocol to Support State Migration.” In 4th IEEE International Conference on Network Softwarization (NetSoft 2018). Montreal, n.d. https://doi.org/10.1109/NETSOFT.2018.8460007.' ieee: 'M. Peuster, H. Küttner, and H. Karl, “ Let the state follow its flows: An SDN-based flow handover protocol to support state migration,” in 4th IEEE International Conference on Network Softwarization (NetSoft 2018), Montreal.' mla: 'Peuster, Manuel, et al. “ Let the State Follow Its Flows: An SDN-Based Flow Handover Protocol to Support State Migration.” 4th IEEE International Conference on Network Softwarization (NetSoft 2018), doi:10.1109/NETSOFT.2018.8460007.' short: 'M. Peuster, H. Küttner, H. Karl, in: 4th IEEE International Conference on Network Softwarization (NetSoft 2018), Montreal, n.d.' conference: end_date: 2018-06-29 location: Montreal name: 4th IEEE International Conference on Network Softwarization (NetSoft 2018) start_date: 2018-06-25 date_created: 2018-06-25T12:21:49Z date_updated: 2022-01-06T06:59:11Z ddc: - '000' department: - _id: '75' doi: 10.1109/NETSOFT.2018.8460007 file: - access_level: open_access content_type: application/pdf creator: peuster date_created: 2018-07-05T11:11:37Z date_updated: 2018-07-05T11:12:29Z file_id: '3428' file_name: main_ris.pdf file_size: 901561 relation: main_file file_date_updated: 2018-07-05T11:12:29Z has_accepted_license: '1' language: - iso: eng main_file_link: - url: https://ieeexplore.ieee.org/document/8460007/ oa: '1' place: Montreal project: - _id: '28' grant_number: '761493' name: 5G Development and validation platform for global industry-specific network services and Apps - _id: '1' name: SFB 901 - _id: '4' name: SFB 901 - Project Area C - _id: '16' name: SFB 901 - Subproject C4 publication: 4th IEEE International Conference on Network Softwarization (NetSoft 2018) publication_status: accepted status: public title: ' Let the state follow its flows: An SDN-based flow handover protocol to support state migration' type: conference urn: '33458' user_id: '13271' year: '2018' ... --- _id: '3346' abstract: - lang: eng text: "Developing a virtualized network service does not only involve the\r\n implementation and configuration of the network functions it is\r\n composed of but also its integration and test with management\r\n solutions that will control the service in its production\r\n environment. These integration tasks require testbeds that offer the\r\n needed network function virtualization infrastructure~(NFVI), like OpenStack, introducing a\r\n lot of management and maintenance overheads. Such testbed setups\r\n become even more complicated when the multi\r\n point-of-presence~(PoP) case, with multiple infrastructure\r\n installations, is considered.\r\n\r\n \ In this demo, we showcase an emulation platform that executes\r\n containerized network services in user-defined multi-PoP\r\n topologies. The platform does not only allow network service developers to\r\n locally test their services but also to connect real-world\r\n management and orchestration solutions to the emulated PoPs. During our\r\n interactive demonstration we focus on the integration between\r\n the emulated infrastructure and state-of-the-art orchestration\r\n \ solutions like SONATA or OSM." author: - first_name: Manuel full_name: Peuster, Manuel id: '13271' last_name: Peuster - first_name: 'Johannes ' full_name: 'Kampmeyer, Johannes ' last_name: Kampmeyer - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: 'Peuster M, Kampmeyer J, Karl H. Containernet 2.0: A Rapid Prototyping Platform for Hybrid Service Function Chains. In: 4th IEEE International Conference on Network Softwarization (NetSoft 2018). Montreal. doi:10.1109/NETSOFT.2018.8459905' apa: 'Peuster, M., Kampmeyer, J., & Karl, H. (n.d.). Containernet 2.0: A Rapid Prototyping Platform for Hybrid Service Function Chains. In 4th IEEE International Conference on Network Softwarization (NetSoft 2018). Montreal. https://doi.org/10.1109/NETSOFT.2018.8459905' bibtex: '@inproceedings{Peuster_Kampmeyer_Karl, place={Montreal}, title={Containernet 2.0: A Rapid Prototyping Platform for Hybrid Service Function Chains}, DOI={10.1109/NETSOFT.2018.8459905}, booktitle={4th IEEE International Conference on Network Softwarization (NetSoft 2018)}, author={Peuster, Manuel and Kampmeyer, Johannes and Karl, Holger} }' chicago: 'Peuster, Manuel, Johannes Kampmeyer, and Holger Karl. “Containernet 2.0: A Rapid Prototyping Platform for Hybrid Service Function Chains.” In 4th IEEE International Conference on Network Softwarization (NetSoft 2018). Montreal, n.d. https://doi.org/10.1109/NETSOFT.2018.8459905.' ieee: 'M. Peuster, J. Kampmeyer, and H. Karl, “Containernet 2.0: A Rapid Prototyping Platform for Hybrid Service Function Chains,” in 4th IEEE International Conference on Network Softwarization (NetSoft 2018), Montreal.' mla: 'Peuster, Manuel, et al. “Containernet 2.0: A Rapid Prototyping Platform for Hybrid Service Function Chains.” 4th IEEE International Conference on Network Softwarization (NetSoft 2018), doi:10.1109/NETSOFT.2018.8459905.' short: 'M. Peuster, J. Kampmeyer, H. Karl, in: 4th IEEE International Conference on Network Softwarization (NetSoft 2018), Montreal, n.d.' conference: end_date: 2018-06-29 location: Montreal name: 4th IEEE International Conference on Network Softwarization (NetSoft 2018) start_date: 2018-06-25 date_created: 2018-06-25T12:24:19Z date_updated: 2022-01-06T06:59:11Z ddc: - '000' department: - _id: '75' doi: 10.1109/NETSOFT.2018.8459905 file: - access_level: open_access content_type: application/pdf creator: peuster date_created: 2018-07-05T11:12:55Z date_updated: 2018-07-05T11:12:55Z file_id: '3429' file_name: main_ris.pdf file_size: 449513 relation: main_file file_date_updated: 2018-07-05T11:12:55Z has_accepted_license: '1' language: - iso: eng main_file_link: - url: https://ieeexplore.ieee.org/document/8459905/ oa: '1' place: Montreal project: - _id: '28' grant_number: '761493' name: 5G Development and validation platform for global industry-specific network services and Apps - _id: '1' name: SFB 901 - _id: '4' name: SFB 901 - Project Area C - _id: '16' name: SFB 901 - Subproject C4 publication: 4th IEEE International Conference on Network Softwarization (NetSoft 2018) publication_status: accepted status: public title: 'Containernet 2.0: A Rapid Prototyping Platform for Hybrid Service Function Chains' type: conference urn: '33467' user_id: '13271' year: '2018' ... --- _id: '3347' abstract: - lang: eng text: "Management and orchestration~(MANO) systems are the key components of future large-scale NFV environments. They will manage resources of hundreds or even thousands of NFV infrastructure installations, so called points of presence~(PoP). Such scenarios need to be automatically tested during the development phase of a MANO system. This task becomes very challenging because large-scale NFV testbeds are hard to maintain, too expensive, or simply not available.\r\n\r\nIn this paper, we present a multi-PoP NFV infrastructure emulation platform that enables automated, large-scale testing of MANO stacks. We show that our platform can easily emulate hundreds of PoPs on a single physical machine and reduces the setup time of a test PoP by a factor of 232x compared to a DevStack-based test PoP installation. Further, we present a case study in which we test ETSI's Open Source MANO~(OSM) against our proposed system to gain insights about OSM's behaviour in large-scale NFV deployments." author: - first_name: Manuel full_name: Peuster, Manuel id: '13271' last_name: Peuster - first_name: Michael full_name: Marchetti, Michael last_name: Marchetti - first_name: Gerado full_name: Garcia de Blas, Gerado last_name: Garcia de Blas - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: 'Peuster M, Marchetti M, Garcia de Blas G, Karl H. Emulation-based Smoke Testing of NFV Orchestrators in Large Multi-PoP Environments. In: European Conference on Networks and Communications (EuCNC). Ljubljana. doi:10.1109/EuCNC.2018.8442701' apa: Peuster, M., Marchetti, M., Garcia de Blas, G., & Karl, H. (n.d.). Emulation-based Smoke Testing of NFV Orchestrators in Large Multi-PoP Environments. In European Conference on Networks and Communications (EuCNC). Ljubljana. https://doi.org/10.1109/EuCNC.2018.8442701 bibtex: '@inproceedings{Peuster_Marchetti_Garcia de Blas_Karl, place={Ljubljana}, title={Emulation-based Smoke Testing of NFV Orchestrators in Large Multi-PoP Environments}, DOI={10.1109/EuCNC.2018.8442701}, booktitle={European Conference on Networks and Communications (EuCNC)}, author={Peuster, Manuel and Marchetti, Michael and Garcia de Blas, Gerado and Karl, Holger} }' chicago: Peuster, Manuel, Michael Marchetti, Gerado Garcia de Blas, and Holger Karl. “Emulation-Based Smoke Testing of NFV Orchestrators in Large Multi-PoP Environments.” In European Conference on Networks and Communications (EuCNC). Ljubljana, n.d. https://doi.org/10.1109/EuCNC.2018.8442701. ieee: M. Peuster, M. Marchetti, G. Garcia de Blas, and H. Karl, “Emulation-based Smoke Testing of NFV Orchestrators in Large Multi-PoP Environments,” in European Conference on Networks and Communications (EuCNC), Ljubljana. mla: Peuster, Manuel, et al. “Emulation-Based Smoke Testing of NFV Orchestrators in Large Multi-PoP Environments.” European Conference on Networks and Communications (EuCNC), doi:10.1109/EuCNC.2018.8442701. short: 'M. Peuster, M. Marchetti, G. Garcia de Blas, H. Karl, in: European Conference on Networks and Communications (EuCNC), Ljubljana, n.d.' conference: location: Ljubljana name: European Conference on Networks and Communications (EuCNC) date_created: 2018-06-25T12:27:59Z date_updated: 2022-01-06T06:59:12Z ddc: - '000' department: - _id: '75' doi: 10.1109/EuCNC.2018.8442701 file: - access_level: open_access content_type: application/pdf creator: peuster date_created: 2018-07-05T11:13:29Z date_updated: 2018-07-05T11:13:29Z file_id: '3430' file_name: main_ris.pdf file_size: 713495 relation: main_file file_date_updated: 2018-07-05T11:13:29Z has_accepted_license: '1' language: - iso: eng main_file_link: - url: https://ieeexplore.ieee.org/document/8442701/ oa: '1' place: Ljubljana project: - _id: '28' grant_number: '761493' name: 5G Development and validation platform for global industry-specific network services and Apps - _id: '1' name: SFB 901 - _id: '4' name: SFB 901 - Project Area C - _id: '16' name: SFB 901 - Subproject C4 publication: European Conference on Networks and Communications (EuCNC) publication_status: accepted status: public title: Emulation-based Smoke Testing of NFV Orchestrators in Large Multi-PoP Environments type: conference urn: '33477' user_id: '13271' year: '2018' ... --- _id: '3152' abstract: - lang: eng text: To adapt to continuously changing workloads in networks, components of the running network services may need to be replicated (scaling the network service) and allocated to physical resources (placement) dynamically, also necessitating dynamic re-routing of flows between service components. In this paper, we propose JASPER, a fully automated approach to jointly optimizing scaling, placement, and routing for complex network services, consisting of multiple (virtualized) components. JASPER handles multiple network services that share the same substrate network; services can be dynamically added or removed and dynamic workload changes are handled. Our approach lets service designers specify their services on a high level of abstraction using service templates. JASPER automatically makes scaling, placement and routing decisions, enabling quick reaction to changes. We formalize the problem, analyze its complexity, and develop two algorithms to solve it. Extensive empirical results show the applicability and effectiveness of the proposed approach. article_type: original author: - first_name: Sevil full_name: Dräxler, Sevil id: '31764' last_name: Dräxler - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl - first_name: Zoltan Adam full_name: Mann, Zoltan Adam last_name: Mann citation: ama: 'Dräxler S, Karl H, Mann ZA. JASPER: Joint Optimization of Scaling, Placement, and Routing of Virtual Network Services. IEEE Transactions on Network and Service Management. 2018. doi:10.1109/TNSM.2018.2846572' apa: 'Dräxler, S., Karl, H., & Mann, Z. A. (2018). JASPER: Joint Optimization of Scaling, Placement, and Routing of Virtual Network Services. IEEE Transactions on Network and Service Management. https://doi.org/10.1109/TNSM.2018.2846572' bibtex: '@article{Dräxler_Karl_Mann_2018, title={JASPER: Joint Optimization of Scaling, Placement, and Routing of Virtual Network Services}, DOI={10.1109/TNSM.2018.2846572}, journal={IEEE Transactions on Network and Service Management}, publisher={IEEE}, author={Dräxler, Sevil and Karl, Holger and Mann, Zoltan Adam}, year={2018} }' chicago: 'Dräxler, Sevil, Holger Karl, and Zoltan Adam Mann. “JASPER: Joint Optimization of Scaling, Placement, and Routing of Virtual Network Services.” IEEE Transactions on Network and Service Management, 2018. https://doi.org/10.1109/TNSM.2018.2846572.' ieee: 'S. Dräxler, H. Karl, and Z. A. Mann, “JASPER: Joint Optimization of Scaling, Placement, and Routing of Virtual Network Services,” IEEE Transactions on Network and Service Management, 2018.' mla: 'Dräxler, Sevil, et al. “JASPER: Joint Optimization of Scaling, Placement, and Routing of Virtual Network Services.” IEEE Transactions on Network and Service Management, IEEE, 2018, doi:10.1109/TNSM.2018.2846572.' short: S. Dräxler, H. Karl, Z.A. Mann, IEEE Transactions on Network and Service Management (2018). date_created: 2018-06-11T06:55:05Z date_updated: 2022-01-06T06:59:00Z ddc: - '000' department: - _id: '75' doi: 10.1109/TNSM.2018.2846572 file: - access_level: closed content_type: application/pdf creator: ups date_created: 2018-11-02T15:25:49Z date_updated: 2018-11-02T15:25:49Z file_id: '5302' file_name: 08382313.pdf file_size: 1767054 relation: main_file success: 1 - access_level: open_access content_type: application/pdf creator: sevilmeh date_created: 2019-01-21T16:12:36Z date_updated: 2019-01-21T16:12:36Z file_id: '6950' file_name: TNSM2846572_RIS.pdf file_size: 2878350 relation: main_file file_date_updated: 2019-01-21T16:12:36Z has_accepted_license: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1711.10839 oa: '1' project: - _id: '23' grant_number: '762057' name: 5G Programmable Infrastructure Converging disaggregated neTwork and compUte Resources - _id: '1' name: SFB 901 - _id: '4' name: SFB 901 - Project Area C - _id: '16' name: SFB 901 - Subproject C4 publication: IEEE Transactions on Network and Service Management publisher: IEEE status: public title: 'JASPER: Joint Optimization of Scaling, Placement, and Routing of Virtual Network Services' type: journal_article urn: '31522' user_id: '31764' year: '2018' ... --- _id: '6016' author: - first_name: Manuel full_name: Peuster, Manuel id: '13271' last_name: Peuster - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: 'Peuster M, Karl H. Understand your chains and keep your deadlines: Introducing time-constrained profiling for NFV. In: IEEE/IFIP 14th International Conference on Network and Service Management (CNSM). Rome: IEEE/IFIP.' apa: 'Peuster, M., & Karl, H. (n.d.). Understand your chains and keep your deadlines: Introducing time-constrained profiling for NFV. In IEEE/IFIP 14th International Conference on Network and Service Management (CNSM). Rome: IEEE/IFIP.' bibtex: '@inproceedings{Peuster_Karl, place={Rome}, title={Understand your chains and keep your deadlines: Introducing time-constrained profiling for NFV}, booktitle={IEEE/IFIP 14th International Conference on Network and Service Management (CNSM)}, publisher={IEEE/IFIP}, author={Peuster, Manuel and Karl, Holger} }' chicago: 'Peuster, Manuel, and Holger Karl. “Understand Your Chains and Keep Your Deadlines: Introducing Time-Constrained Profiling for NFV.” In IEEE/IFIP 14th International Conference on Network and Service Management (CNSM). Rome: IEEE/IFIP, n.d.' ieee: 'M. Peuster and H. Karl, “Understand your chains and keep your deadlines: Introducing time-constrained profiling for NFV,” in IEEE/IFIP 14th International Conference on Network and Service Management (CNSM), Rome.' mla: 'Peuster, Manuel, and Holger Karl. “Understand Your Chains and Keep Your Deadlines: Introducing Time-Constrained Profiling for NFV.” IEEE/IFIP 14th International Conference on Network and Service Management (CNSM), IEEE/IFIP.' short: 'M. Peuster, H. Karl, in: IEEE/IFIP 14th International Conference on Network and Service Management (CNSM), IEEE/IFIP, Rome, n.d.' conference: end_date: 2018-11-09 location: Rome name: IEEE/IFIP 14th International Conference on Network and Service Management (CNSM) start_date: 2018-11-05 date_created: 2018-12-06T12:06:14Z date_updated: 2022-01-06T07:02:50Z ddc: - '000' department: - _id: '75' file: - access_level: open_access content_type: application/pdf creator: peuster date_created: 2018-12-06T12:05:37Z date_updated: 2018-12-06T12:05:37Z file_id: '6017' file_name: main_copy_for_ris.pdf file_size: 961004 relation: main_file file_date_updated: 2018-12-06T12:05:37Z has_accepted_license: '1' language: - iso: eng main_file_link: - url: https://ieeexplore.ieee.org/abstract/document/8584974 oa: '1' place: Rome project: - _id: '28' grant_number: '761493' name: 5G Development and validation platform for global industry-specific network services and Apps - _id: '1' name: SFB 901 - _id: '4' name: SFB 901 - Project Area C - _id: '15' name: SFB 901 - Subproject C3 publication: IEEE/IFIP 14th International Conference on Network and Service Management (CNSM) publication_status: accepted publisher: IEEE/IFIP status: public title: 'Understand your chains and keep your deadlines: Introducing time-constrained profiling for NFV' type: conference user_id: '13271' year: '2018' ... --- _id: '6483' author: - first_name: Manuel full_name: Peuster, Manuel id: '13271' last_name: Peuster - first_name: Stefan Balthasar full_name: Schneider, Stefan Balthasar id: '35343' last_name: Schneider orcid: 0000-0001-8210-4011 - first_name: Frederic full_name: Christ, Frederic last_name: Christ - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: 'Peuster M, Schneider SB, Christ F, Karl H. A Prototyping Platform to Validate and Verify Network Service Header-based Service Chains. In: IEEE Conference on Network Function Virtualisation and Software Defined Networks (NFV-SDN) 5GNetApp. Verona: IEEE; 2018.' apa: 'Peuster, M., Schneider, S. B., Christ, F., & Karl, H. (2018). A Prototyping Platform to Validate and Verify Network Service Header-based Service Chains. In IEEE Conference on Network Function Virtualisation and Software Defined Networks (NFV-SDN) 5GNetApp. Verona: IEEE.' bibtex: '@inproceedings{Peuster_Schneider_Christ_Karl_2018, place={Verona}, title={A Prototyping Platform to Validate and Verify Network Service Header-based Service Chains}, booktitle={IEEE Conference on Network Function Virtualisation and Software Defined Networks (NFV-SDN) 5GNetApp}, publisher={IEEE}, author={Peuster, Manuel and Schneider, Stefan Balthasar and Christ, Frederic and Karl, Holger}, year={2018} }' chicago: 'Peuster, Manuel, Stefan Balthasar Schneider, Frederic Christ, and Holger Karl. “A Prototyping Platform to Validate and Verify Network Service Header-Based Service Chains.” In IEEE Conference on Network Function Virtualisation and Software Defined Networks (NFV-SDN) 5GNetApp. Verona: IEEE, 2018.' ieee: M. Peuster, S. B. Schneider, F. Christ, and H. Karl, “A Prototyping Platform to Validate and Verify Network Service Header-based Service Chains,” in IEEE Conference on Network Function Virtualisation and Software Defined Networks (NFV-SDN) 5GNetApp, Verona, 2018. mla: Peuster, Manuel, et al. “A Prototyping Platform to Validate and Verify Network Service Header-Based Service Chains.” IEEE Conference on Network Function Virtualisation and Software Defined Networks (NFV-SDN) 5GNetApp, IEEE, 2018. short: 'M. Peuster, S.B. Schneider, F. Christ, H. Karl, in: IEEE Conference on Network Function Virtualisation and Software Defined Networks (NFV-SDN) 5GNetApp, IEEE, Verona, 2018.' conference: end_date: 2018-11-29 location: Verona name: IEEE Conference on Network Function Virtualisation and Software Defined Networks (NFV-SDN) 5GNetApp start_date: 2018-11-27 date_created: 2019-01-04T07:47:19Z date_updated: 2022-01-06T07:03:07Z ddc: - '000' department: - _id: '75' file: - access_level: open_access content_type: application/pdf creator: peuster date_created: 2019-01-04T07:46:21Z date_updated: 2019-01-04T07:46:21Z file_id: '6484' file_name: main_for_ris.pdf file_size: 541469 relation: main_file file_date_updated: 2019-01-04T07:46:21Z has_accepted_license: '1' language: - iso: eng oa: '1' place: Verona project: - _id: '28' grant_number: '761493' name: 5G Development and validation platform for global industry-specific network services and Apps - _id: '1' name: SFB 901 - _id: '4' name: SFB 901 - Project Area C - _id: '16' name: SFB 901 - Subproject C4 publication: IEEE Conference on Network Function Virtualisation and Software Defined Networks (NFV-SDN) 5GNetApp publisher: IEEE status: public title: A Prototyping Platform to Validate and Verify Network Service Header-based Service Chains type: conference user_id: '35343' year: '2018' ... --- _id: '6485' author: - first_name: Raphael Vicente full_name: Rosa, Raphael Vicente last_name: Rosa - first_name: Christian Esteve full_name: Rothenberg, Christian Esteve last_name: Rothenberg - first_name: Manuel full_name: Peuster, Manuel id: '13271' last_name: Peuster - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: Rosa RV, Rothenberg CE, Peuster M, Karl H. Methodology for VNF Benchmarking Automation. IETF apa: Rosa, R. V., Rothenberg, C. E., Peuster, M., & Karl, H. (n.d.). Methodology for VNF Benchmarking Automation. IETF. bibtex: '@book{Rosa_Rothenberg_Peuster_Karl, title={Methodology for VNF Benchmarking Automation}, publisher={IETF}, author={Rosa, Raphael Vicente and Rothenberg, Christian Esteve and Peuster, Manuel and Karl, Holger} }' chicago: Rosa, Raphael Vicente, Christian Esteve Rothenberg, Manuel Peuster, and Holger Karl. Methodology for VNF Benchmarking Automation. IETF, n.d. ieee: R. V. Rosa, C. E. Rothenberg, M. Peuster, and H. Karl, Methodology for VNF Benchmarking Automation. IETF. mla: Rosa, Raphael Vicente, et al. Methodology for VNF Benchmarking Automation. IETF. short: R.V. Rosa, C.E. Rothenberg, M. Peuster, H. Karl, Methodology for VNF Benchmarking Automation, IETF, n.d. date_created: 2019-01-04T07:53:50Z date_updated: 2022-01-06T07:03:07Z department: - _id: '75' language: - iso: eng main_file_link: - open_access: '1' url: https://datatracker.ietf.org/doc/draft-rosa-bmwg-vnfbench/ oa: '1' project: - _id: '28' grant_number: '761493' name: 5G Development and validation platform for global industry-specific network services and Apps publication_status: draft publisher: IETF report_number: draft-rosa-bmwg-vnfbench status: public title: Methodology for VNF Benchmarking Automation type: report user_id: '13271' year: '2018' ... --- _id: '6970' abstract: - lang: eng text: "Dynamic allocation of resources is a key feature in network function virtualization (NFV), enabling flexible adjustment of slices and contained network services to ever-changing service demands. \r\nConsidering resource allocation across the entire network, many authors have proposed approaches to optimize the placement and chaining of virtual network function (VNF) instances and the allocation of resources to these VNF instances. In doing so, various optimization objectives are conceivable, e.g., minimizing certain required resources or the end-to-end delay of the placed services.\r\n\r\nIn this paper, we investigate the relationship between four typical optimization objectives when coordinating the placement and resource allocation of chained VNF instances. We observe an interesting trade-off between minimizing the overhead of starting/stopping VNF instances and all other objectives when adapting to changed service demands." author: - first_name: Stefan Balthasar full_name: Schneider, Stefan Balthasar id: '35343' last_name: Schneider orcid: 0000-0001-8210-4011 - first_name: Sevil full_name: Dräxler, Sevil id: '31764' last_name: Dräxler - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: 'Schneider SB, Dräxler S, Karl H. Trade-offs in Dynamic Resource Allocation in Network Function Virtualization. In: IEEE Global Communications Conference (GLOBECOM 2018). IEEE; 2018.' apa: 'Schneider, S. B., Dräxler, S., & Karl, H. (2018). Trade-offs in Dynamic Resource Allocation in Network Function Virtualization. In IEEE Global Communications Conference (GLOBECOM 2018). Abu Dhabi, UAE: IEEE.' bibtex: '@inproceedings{Schneider_Dräxler_Karl_2018, title={Trade-offs in Dynamic Resource Allocation in Network Function Virtualization}, booktitle={IEEE Global Communications Conference (GLOBECOM 2018)}, publisher={IEEE}, author={Schneider, Stefan Balthasar and Dräxler, Sevil and Karl, Holger}, year={2018} }' chicago: Schneider, Stefan Balthasar, Sevil Dräxler, and Holger Karl. “Trade-Offs in Dynamic Resource Allocation in Network Function Virtualization.” In IEEE Global Communications Conference (GLOBECOM 2018). IEEE, 2018. ieee: S. B. Schneider, S. Dräxler, and H. Karl, “Trade-offs in Dynamic Resource Allocation in Network Function Virtualization,” in IEEE Global Communications Conference (GLOBECOM 2018), Abu Dhabi, UAE, 2018. mla: Schneider, Stefan Balthasar, et al. “Trade-Offs in Dynamic Resource Allocation in Network Function Virtualization.” IEEE Global Communications Conference (GLOBECOM 2018), IEEE, 2018. short: 'S.B. Schneider, S. Dräxler, H. Karl, in: IEEE Global Communications Conference (GLOBECOM 2018), IEEE, 2018.' conference: location: Abu Dhabi, UAE name: IEEE Global Communications Conference (GLOBECOM 2018) date_created: 2019-01-24T13:53:22Z date_updated: 2022-01-06T07:03:24Z ddc: - '040' department: - _id: '75' file: - access_level: open_access content_type: application/pdf creator: stschn date_created: 2019-01-24T13:53:16Z date_updated: 2019-01-24T13:53:16Z file_id: '6971' file_name: preprint_ris.pdf file_size: 422196 relation: main_file file_date_updated: 2019-01-24T13:53:16Z has_accepted_license: '1' language: - iso: eng oa: '1' project: - _id: '28' grant_number: '761493' name: 5G Development and validation platform for global industry-specific network services and Apps - _id: '1' name: SFB 901 - _id: '4' name: SFB 901 - Project Area C - _id: '16' name: SFB 901 - Subproject C4 publication: IEEE Global Communications Conference (GLOBECOM 2018) publisher: IEEE status: public title: Trade-offs in Dynamic Resource Allocation in Network Function Virtualization type: conference user_id: '35343' year: '2018' ... --- _id: '6972' abstract: - lang: eng text: "In recent years, a variety of different approaches\r\nhave been proposed to tackle the problem of scaling and placing\r\nnetwork services, consisting of interconnected virtual network\r\nfunctions (VNFs). This paper presents a placement abstraction\r\nlayer (PAL) that provides a clear and simple northbound interface\r\nfor using such algorithms while hiding their internal\r\nfunctionality and implementation. Through its southbound interface,\r\nPAL can connect to different back ends that evaluate\r\nthe calculated placements, e.g., using simulations, emulations, or\r\ntestbed approaches. As an example for such evaluation back ends,\r\nwe introduce a novel placement emulation framework (PEF)\r\nthat allows executing calculated placements using real, containerbased\r\nVNFs on real-world network topologies. In a case study,\r\nwe show how PAL and PEF facilitate reusing and evaluating\r\nplacement algorithms as well as validating their underlying\r\nmodels and performance claims." author: - first_name: Stefan Balthasar full_name: Schneider, Stefan Balthasar id: '35343' last_name: Schneider orcid: 0000-0001-8210-4011 - first_name: Manuel full_name: Peuster, Manuel id: '13271' last_name: Peuster - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: 'Schneider SB, Peuster M, Karl H. A Generic Emulation Framework for Reusing and Evaluating VNF Placement Algorithms. In: IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN 2018). IEEE; 2018. doi:10.1109/NFV-SDN.2018.8725795' apa: 'Schneider, S. B., Peuster, M., & Karl, H. (2018). A Generic Emulation Framework for Reusing and Evaluating VNF Placement Algorithms. In IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN 2018). Verona, Italy: IEEE. https://doi.org/10.1109/NFV-SDN.2018.8725795' bibtex: '@inproceedings{Schneider_Peuster_Karl_2018, title={A Generic Emulation Framework for Reusing and Evaluating VNF Placement Algorithms}, DOI={10.1109/NFV-SDN.2018.8725795}, booktitle={IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN 2018)}, publisher={IEEE}, author={Schneider, Stefan Balthasar and Peuster, Manuel and Karl, Holger}, year={2018} }' chicago: Schneider, Stefan Balthasar, Manuel Peuster, and Holger Karl. “A Generic Emulation Framework for Reusing and Evaluating VNF Placement Algorithms.” In IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN 2018). IEEE, 2018. https://doi.org/10.1109/NFV-SDN.2018.8725795. ieee: S. B. Schneider, M. Peuster, and H. Karl, “A Generic Emulation Framework for Reusing and Evaluating VNF Placement Algorithms,” in IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN 2018), Verona, Italy, 2018. mla: Schneider, Stefan Balthasar, et al. “A Generic Emulation Framework for Reusing and Evaluating VNF Placement Algorithms.” IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN 2018), IEEE, 2018, doi:10.1109/NFV-SDN.2018.8725795. short: 'S.B. Schneider, M. Peuster, H. Karl, in: IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN 2018), IEEE, 2018.' conference: location: Verona, Italy name: IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN 2018) date_created: 2019-01-24T14:10:17Z date_updated: 2022-01-06T07:03:24Z ddc: - '040' department: - _id: '75' doi: 10.1109/NFV-SDN.2018.8725795 file: - access_level: open_access content_type: application/pdf creator: stschn date_created: 2019-01-24T14:10:08Z date_updated: 2019-01-24T14:25:23Z file_id: '6973' file_name: preprint_ris.pdf file_size: 468396 relation: main_file file_date_updated: 2019-01-24T14:25:23Z has_accepted_license: '1' language: - iso: eng main_file_link: - url: https://ieeexplore.ieee.org/abstract/document/8725795 oa: '1' project: - _id: '28' grant_number: '761493' name: 5G Development and validation platform for global industry-specific network services and Apps - _id: '1' name: SFB 901 - _id: '4' name: SFB 901 - Project Area C - _id: '16' name: SFB 901 - Subproject C4 publication: IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN 2018) publisher: IEEE status: public title: A Generic Emulation Framework for Reusing and Evaluating VNF Placement Algorithms type: conference user_id: '35343' year: '2018' ... --- _id: '6974' abstract: - lang: eng text: "A key challenge of network function virtualization\r\n(NFV) is the complexity of developing and deploying new\r\nnetwork services. Currently, development requires many manual\r\nsteps that are time-consuming and error-prone (e.g., for creating\r\nservice descriptors). Furthermore, existing management and\r\norchestration (MANO) platforms only offer limited support of\r\nstandardized descriptor models or package formats, limiting the\r\nre-usability of network services.\r\n\r\nTo this end, we introduce a fully integrated, open-source\r\nNFV service development kit (SDK) with multi-MANO platform\r\nsupport. Our SDK simplifies many NFV service development\r\nsteps by offering initial generation of descriptors, advanced\r\nproject management, as well as fully automated packaging and\r\nsubmission for on-boarding. To achieve multi-platform support,\r\nwe present a package format that extends ETSI’s VNF package\r\nformat. In this demonstration, we present the end-to-end workflow\r\nto develop an NFV service that is then packaged for multiple\r\nplatforms, i.e., 5GTANGO and OSM." author: - first_name: Stefan Balthasar full_name: Schneider, Stefan Balthasar id: '35343' last_name: Schneider orcid: 0000-0001-8210-4011 - first_name: Manuel full_name: Peuster, Manuel id: '13271' last_name: Peuster - first_name: Wouter full_name: Tavernier, Wouter last_name: Tavernier - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: 'Schneider SB, Peuster M, Tavernier W, Karl H. A Fully Integrated Multi-Platform NFV SDK. In: IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN 2018). IEEE; 2018. doi:10.1109/NFV-SDN.2018.8725794' apa: 'Schneider, S. B., Peuster, M., Tavernier, W., & Karl, H. (2018). A Fully Integrated Multi-Platform NFV SDK. In IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN 2018). Verona, Italy: IEEE. https://doi.org/10.1109/NFV-SDN.2018.8725794' bibtex: '@inproceedings{Schneider_Peuster_Tavernier_Karl_2018, title={A Fully Integrated Multi-Platform NFV SDK}, DOI={10.1109/NFV-SDN.2018.8725794}, booktitle={IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN 2018)}, publisher={IEEE}, author={Schneider, Stefan Balthasar and Peuster, Manuel and Tavernier, Wouter and Karl, Holger}, year={2018} }' chicago: Schneider, Stefan Balthasar, Manuel Peuster, Wouter Tavernier, and Holger Karl. “A Fully Integrated Multi-Platform NFV SDK.” In IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN 2018). IEEE, 2018. https://doi.org/10.1109/NFV-SDN.2018.8725794. ieee: S. B. Schneider, M. Peuster, W. Tavernier, and H. Karl, “A Fully Integrated Multi-Platform NFV SDK,” in IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN 2018), Verona, Italy, 2018. mla: Schneider, Stefan Balthasar, et al. “A Fully Integrated Multi-Platform NFV SDK.” IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN 2018), IEEE, 2018, doi:10.1109/NFV-SDN.2018.8725794. short: 'S.B. Schneider, M. Peuster, W. Tavernier, H. Karl, in: IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN 2018), IEEE, 2018.' conference: location: Verona, Italy name: IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN 2018) date_created: 2019-01-24T14:17:58Z date_updated: 2022-01-06T07:03:25Z ddc: - '040' department: - _id: '75' doi: 10.1109/NFV-SDN.2018.8725794 file: - access_level: open_access content_type: application/pdf creator: stschn date_created: 2019-01-24T14:17:29Z date_updated: 2019-01-24T14:26:23Z file_id: '6975' file_name: Pre-print.pdf file_size: 475022 relation: main_file file_date_updated: 2019-01-24T14:26:23Z has_accepted_license: '1' language: - iso: eng main_file_link: - url: https://ieeexplore.ieee.org/abstract/document/8725794 oa: '1' project: - _id: '28' grant_number: '761493' name: 5G Development and validation platform for global industry-specific network services and Apps - _id: '1' name: SFB 901 - _id: '4' name: SFB 901 - Project Area C - _id: '16' name: SFB 901 - Subproject C4 publication: IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN 2018) publisher: IEEE status: public title: A Fully Integrated Multi-Platform NFV SDK type: conference user_id: '35343' year: '2018' ... --- _id: '1208' author: - first_name: Arne full_name: Schwabe, Arne last_name: Schwabe citation: ama: Schwabe A. Data-Centre Traffic Optimisation Using Software-Defined Networks. Universität Paderborn; 2018. doi:10.17619/UNIPB/1-287 apa: Schwabe, A. (2018). Data-Centre Traffic Optimisation using Software-Defined Networks. Universität Paderborn. https://doi.org/10.17619/UNIPB/1-287 bibtex: '@book{Schwabe_2018, title={Data-Centre Traffic Optimisation using Software-Defined Networks}, DOI={10.17619/UNIPB/1-287}, publisher={Universität Paderborn}, author={Schwabe, Arne}, year={2018} }' chicago: Schwabe, Arne. Data-Centre Traffic Optimisation Using Software-Defined Networks. Universität Paderborn, 2018. https://doi.org/10.17619/UNIPB/1-287. ieee: A. Schwabe, Data-Centre Traffic Optimisation using Software-Defined Networks. Universität Paderborn, 2018. mla: Schwabe, Arne. Data-Centre Traffic Optimisation Using Software-Defined Networks. Universität Paderborn, 2018, doi:10.17619/UNIPB/1-287. short: A. Schwabe, Data-Centre Traffic Optimisation Using Software-Defined Networks, Universität Paderborn, 2018. date_created: 2018-03-13T10:22:51Z date_updated: 2022-01-06T06:51:17Z department: - _id: '75' doi: 10.17619/UNIPB/1-287 language: - iso: eng project: - _id: '1' name: SFB 901 - _id: '6' name: SFB 901 - Subproject A2 - _id: '4' name: SFB 901 - Project Area C - _id: '16' name: SFB 901 - Subproject C4 - _id: '2' name: SFB 901 - Project Area A publisher: Universität Paderborn status: public supervisor: - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl title: Data-Centre Traffic Optimisation using Software-Defined Networks type: dissertation user_id: '477' year: '2018' ... --- _id: '6859' abstract: - lang: eng text: "Signal processing in WASNs is based on a software framework for hosting the algorithms as well as on a set of wireless connected devices representing the hardware. Each of the nodes contributes memory, processing power, communication bandwidth and some sensor information for the tasks to be solved on the network. \r\nIn this paper we present our MARVELO framework for distributed signal processing. It is intended for transforming existing centralized implementations into distributed versions. To this end, the software only needs a block-oriented implementation, which MARVELO picks-up and distributes on the network. Additionally, our sensor node hardware and the audio interfaces responsible for multi-channel recordings are presented." author: - first_name: Haitham full_name: Afifi, Haitham id: '65718' last_name: Afifi - first_name: Joerg full_name: Schmalenstroeer, Joerg id: '460' last_name: Schmalenstroeer - first_name: Joerg full_name: Ullmann, Joerg id: '16256' last_name: Ullmann - first_name: Reinhold full_name: Haeb-Umbach, Reinhold id: '242' last_name: Haeb-Umbach - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: 'Afifi H, Schmalenstroeer J, Ullmann J, Haeb-Umbach R, Karl H. MARVELO - A Framework for Signal Processing in Wireless Acoustic Sensor Networks. In: Speech Communication; 13th ITG-Symposium. ; 2018:1-5.' apa: Afifi, H., Schmalenstroeer, J., Ullmann, J., Haeb-Umbach, R., & Karl, H. (2018). MARVELO - A Framework for Signal Processing in Wireless Acoustic Sensor Networks. Speech Communication; 13th ITG-Symposium, 1–5. bibtex: '@inproceedings{Afifi_Schmalenstroeer_Ullmann_Haeb-Umbach_Karl_2018, title={MARVELO - A Framework for Signal Processing in Wireless Acoustic Sensor Networks}, booktitle={Speech Communication; 13th ITG-Symposium}, author={Afifi, Haitham and Schmalenstroeer, Joerg and Ullmann, Joerg and Haeb-Umbach, Reinhold and Karl, Holger}, year={2018}, pages={1–5} }' chicago: Afifi, Haitham, Joerg Schmalenstroeer, Joerg Ullmann, Reinhold Haeb-Umbach, and Holger Karl. “MARVELO - A Framework for Signal Processing in Wireless Acoustic Sensor Networks.” In Speech Communication; 13th ITG-Symposium, 1–5, 2018. ieee: H. Afifi, J. Schmalenstroeer, J. Ullmann, R. Haeb-Umbach, and H. Karl, “MARVELO - A Framework for Signal Processing in Wireless Acoustic Sensor Networks,” in Speech Communication; 13th ITG-Symposium, 2018, pp. 1–5. mla: Afifi, Haitham, et al. “MARVELO - A Framework for Signal Processing in Wireless Acoustic Sensor Networks.” Speech Communication; 13th ITG-Symposium, 2018, pp. 1–5. short: 'H. Afifi, J. Schmalenstroeer, J. Ullmann, R. Haeb-Umbach, H. Karl, in: Speech Communication; 13th ITG-Symposium, 2018, pp. 1–5.' date_created: 2019-01-17T15:47:35Z date_updated: 2023-10-26T08:15:32Z department: - _id: '75' - _id: '54' language: - iso: eng page: 1-5 project: - _id: '27' name: 'Akustische Sensornetzwerke - Teilprojekt ' - _id: '27' name: Akustische Sensornetzwerke - Teilprojekt "Verteilte akustische Signalverarbeitung über funkbasierte Sensornetzwerke publication: Speech Communication; 13th ITG-Symposium quality_controlled: '1' status: public title: MARVELO - A Framework for Signal Processing in Wireless Acoustic Sensor Networks type: conference user_id: '460' year: '2018' ... --- _id: '3291' abstract: - lang: eng text: The microservice architecture uses independently running microservices as build- ing blocks for applications. These microservices are clearly bounded for each other and expose their functionality through, for instance, RESTful application inter- faces. Particularly the clear boundaries between microservices enable the reuse of microservice throughout different projects. Because of the increasing use of microservices, the composition of multiple microservices in service composition becomes a more important task. A challenging area in developing service compo- sitions is that it involves two distinct layers with few junctions. On the one hand, describes a service composition a business process, which involves multiple com- ponents. On the other hand, involves the implementation of a service composition topics like service discovery and message exchange protocols since the microser- vices involved in a service composition are located within a network environment. In this Bachelor’s Thesis, I describe a descriptions language to abstractly describe the business logic of a service composition. Furthermore, I describe a genera- tion process, which compiles this abstract description to a working microservice realizing the specified service composition. In addition to that, I provide an im- plementation of the generation process, as a proof of concept, and test it within a Kubernetes-based cluster environment. author: - first_name: Andreas full_name: Schürmann, Andreas last_name: Schürmann citation: ama: Schürmann A. Microservice-Based Execution Environment for Service Compositions. Universität Paderborn; 2017. apa: Schürmann, A. (2017). Microservice-based Execution Environment for Service Compositions. Universität Paderborn. bibtex: '@book{Schürmann_2017, title={Microservice-based Execution Environment for Service Compositions}, publisher={Universität Paderborn}, author={Schürmann, Andreas}, year={2017} }' chicago: Schürmann, Andreas. Microservice-Based Execution Environment for Service Compositions. Universität Paderborn, 2017. ieee: A. Schürmann, Microservice-based Execution Environment for Service Compositions. Universität Paderborn, 2017. mla: Schürmann, Andreas. Microservice-Based Execution Environment for Service Compositions. Universität Paderborn, 2017. short: A. Schürmann, Microservice-Based Execution Environment for Service Compositions, Universität Paderborn, 2017. date_created: 2018-06-21T11:09:30Z date_updated: 2022-01-06T06:59:09Z department: - _id: '75' language: - iso: eng project: - _id: '16' name: SFB 901 - Subproject C4 - _id: '1' name: SFB 901 - _id: '4' name: SFB 901 - Project Area C publisher: Universität Paderborn status: public supervisor: - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl title: Microservice-based Execution Environment for Service Compositions type: bachelorsthesis user_id: '477' year: '2017' ... --- _id: '2741' author: - first_name: Shehzad full_name: Ali Ashraf, Shehzad last_name: Ali Ashraf - first_name: Y.-P. Eric full_name: Wang, Y.-P. Eric last_name: Wang - first_name: 'Sameh ' full_name: 'Eldessoki, Sameh ' last_name: Eldessoki - first_name: Bernd full_name: Holfeld, Bernd last_name: Holfeld - first_name: 'Donald ' full_name: 'Parruca, Donald ' last_name: Parruca - first_name: Martin full_name: Serror, Martin last_name: Serror - first_name: James full_name: Gross, James last_name: Gross citation: ama: 'Ali Ashraf S, Wang Y-PE, Eldessoki S, et al. From Radio Design to System Evaluations for Ultra-Reliable and Low-Latency Communication . In: Dresden: Proceedings of 23th European Wireless Conference 2017, 17- 19.05.2017; 2017.' apa: 'Ali Ashraf, S., Wang, Y.-P. E., Eldessoki, S., Holfeld, B., Parruca, D., Serror, M., & Gross, J. (2017). From Radio Design to System Evaluations for Ultra-Reliable and Low-Latency Communication . Dresden: Proceedings of 23th European Wireless Conference 2017, 17- 19.05.2017.' bibtex: '@inproceedings{Ali Ashraf_Wang_Eldessoki_Holfeld_Parruca_Serror_Gross_2017, place={Dresden}, title={From Radio Design to System Evaluations for Ultra-Reliable and Low-Latency Communication }, publisher={Proceedings of 23th European Wireless Conference 2017, 17- 19.05.2017}, author={Ali Ashraf, Shehzad and Wang, Y.-P. Eric and Eldessoki, Sameh and Holfeld, Bernd and Parruca, Donald and Serror, Martin and Gross, James}, year={2017} }' chicago: 'Ali Ashraf, Shehzad, Y.-P. Eric Wang, Sameh Eldessoki, Bernd Holfeld, Donald Parruca, Martin Serror, and James Gross. “From Radio Design to System Evaluations for Ultra-Reliable and Low-Latency Communication .” Dresden: Proceedings of 23th European Wireless Conference 2017, 17- 19.05.2017, 2017.' ieee: S. Ali Ashraf et al., “From Radio Design to System Evaluations for Ultra-Reliable and Low-Latency Communication ,” 2017. mla: Ali Ashraf, Shehzad, et al. From Radio Design to System Evaluations for Ultra-Reliable and Low-Latency Communication . Proceedings of 23th European Wireless Conference 2017, 17- 19.05.2017, 2017. short: 'S. Ali Ashraf, Y.-P.E. Wang, S. Eldessoki, B. Holfeld, D. Parruca, M. Serror, J. Gross, in: Proceedings of 23th European Wireless Conference 2017, 17- 19.05.2017, Dresden, 2017.' date_created: 2018-05-14T10:46:57Z date_updated: 2022-01-06T06:57:39Z department: - _id: '75' main_file_link: - url: https://ieeexplore.ieee.org/document/8011336/ place: Dresden project: - _id: '29' name: 'Verbundprojekt: Koordinierte Industriekommunikation - Latenzarme und verlässliche Industriekommunikation - Teilvorhaben: Verteilte Koordination' publisher: Proceedings of 23th European Wireless Conference 2017, 17- 19.05.2017 status: public title: 'From Radio Design to System Evaluations for Ultra-Reliable and Low-Latency Communication ' type: conference user_id: '15572' year: '2017' ... --- _id: '58' abstract: - lang: eng text: Network function virtualization and software-defined networking allow services consisting of virtual network functions to be designed and implemented with great flexibility by facilitating automatic deployments, migrations, and reconfigurations for services and their components. For extended flexibility, we go beyond seeing services as a fixed chain of functions. We define the service structure in a flexible way that enables changing the order of functions in case the functionality of the service is not influenced by this, and propose a YANG data model for expressing this flexibility. Flexible structures allow the network orchestration system to choose the optimal composition of service components that for example gives the best results for placement of services in the network. When number of flexible services and number of components in each service increase, combinatorial explosion limits the practical use of this flexibility. In this paper, we describe a selection heuristic that gives a Pareto set of the possible compositions of a service as well as possible combinations of different services, with respect to different optimization objectives. Moreover, we present a heuristic algorithm for placement of a combination of services, which aims at placing service components along shortest paths that have enough capacity for accommodating the services. By applying these solutions, we show that allowing flexibility in the service structure is feasible. author: - first_name: Sevil full_name: Dräxler, Sevil id: '31764' last_name: Dräxler - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: Dräxler S, Karl H. Specification, Composition, and Placement of Network Services with Flexible Structures. International Journal of Network Management. 2017;(2):1--16. doi:10.1002/nem.1963 apa: Dräxler, S., & Karl, H. (2017). Specification, Composition, and Placement of Network Services with Flexible Structures. International Journal of Network Management, (2), 1--16. https://doi.org/10.1002/nem.1963 bibtex: '@article{Dräxler_Karl_2017, title={Specification, Composition, and Placement of Network Services with Flexible Structures}, DOI={10.1002/nem.1963}, number={2}, journal={International Journal of Network Management}, publisher={Wiley Online Library}, author={Dräxler, Sevil and Karl, Holger}, year={2017}, pages={1--16} }' chicago: 'Dräxler, Sevil, and Holger Karl. “Specification, Composition, and Placement of Network Services with Flexible Structures.” International Journal of Network Management, no. 2 (2017): 1--16. https://doi.org/10.1002/nem.1963.' ieee: S. Dräxler and H. Karl, “Specification, Composition, and Placement of Network Services with Flexible Structures,” International Journal of Network Management, no. 2, pp. 1--16, 2017. mla: Dräxler, Sevil, and Holger Karl. “Specification, Composition, and Placement of Network Services with Flexible Structures.” International Journal of Network Management, no. 2, Wiley Online Library, 2017, pp. 1--16, doi:10.1002/nem.1963. short: S. Dräxler, H. Karl, International Journal of Network Management (2017) 1--16. date_created: 2017-10-17T12:41:02Z date_updated: 2022-01-06T07:02:42Z ddc: - '040' department: - _id: '75' doi: 10.1002/nem.1963 file: - access_level: open_access content_type: application/pdf creator: florida date_created: 2018-03-21T13:18:13Z date_updated: 2018-06-13T09:15:42Z file_id: '1579' file_name: 58-preprint-ijnm.pdf file_size: 2765738 relation: hidden - access_level: open_access content_type: application/pdf creator: sevilmeh date_created: 2018-06-13T09:22:37Z date_updated: 2018-06-13T09:22:37Z file_id: '3197' file_name: 58-accepted-ijnm.pdf file_size: 2766920 relation: main_file file_date_updated: 2018-06-13T09:22:37Z has_accepted_license: '1' issue: '2' oa: '1' page: 1--16 project: - _id: '1' name: SFB 901 - _id: '16' name: SFB 901 - Subprojekt C4 - _id: '4' name: SFB 901 - Project Area C - _id: '25' call_identifier: 5G PPP Phase 1 grant_number: '671517' name: 'SONATA NFV: Agile Service Development and Orchestration in 5G Virtualized Networks' publication: International Journal of Network Management publisher: Wiley Online Library status: public title: Specification, Composition, and Placement of Network Services with Flexible Structures type: journal_article urn: '582' user_id: '477' year: '2017' ... --- _id: '64' abstract: - lang: eng text: 'A current trend in networking and cloud computing is to provide compute resources at widely distributed sites; this is exemplified by developments such as Network Function Virtualisation. This paves the way for wide-area service deployments with improved service quality: e.g. user-perceived response times can be reduced by offering services at nearby sites. But always assigning users to the nearest site can be a bad decision if this site is already highly utilised. This paper formalises two related decisions of allocating compute resources at different sites and assigning users to them with the goal of minimising the response times while the total number of resources to be allocated is limited – a non-linear capacitated Facility Location Problem with integrated queuing systems. To efficiently handle its non-linearity, we introduce five linear problem linearisations and adapt the currently best heuristic for a similar scenario to our scenario. All six approaches are compared in experiments for solution quality and solving time. Surprisingly, our best optimisation formulation outperforms the heuristic in both time and quality. Additionally, we evaluate the influence of distributions of available compute resources in the network on the response time: The time was halved for some configurations. The presented formulation techniques for our problem linearisations are applicable to a broader optimisation domain.' author: - first_name: Matthias full_name: Keller, Matthias last_name: Keller - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: 'Keller M, Karl H. Response-Time-Optimised Service Deployment: MILP Formulations of Piece-wise Linear Functions Approximating Non-linear Bivariate Mixed-integer Functions. IEEE Transactions on Network and Service Management. 2017;(1):121--135. doi:10.1109/TNSM.2016.2611590' apa: 'Keller, M., & Karl, H. (2017). Response-Time-Optimised Service Deployment: MILP Formulations of Piece-wise Linear Functions Approximating Non-linear Bivariate Mixed-integer Functions. IEEE Transactions on Network and Service Management, (1), 121--135. https://doi.org/10.1109/TNSM.2016.2611590' bibtex: '@article{Keller_Karl_2017, title={Response-Time-Optimised Service Deployment: MILP Formulations of Piece-wise Linear Functions Approximating Non-linear Bivariate Mixed-integer Functions}, DOI={10.1109/TNSM.2016.2611590}, number={1}, journal={IEEE Transactions on Network and Service Management}, publisher={IEEE}, author={Keller, Matthias and Karl, Holger}, year={2017}, pages={121--135} }' chicago: 'Keller, Matthias, and Holger Karl. “Response-Time-Optimised Service Deployment: MILP Formulations of Piece-Wise Linear Functions Approximating Non-Linear Bivariate Mixed-Integer Functions.” IEEE Transactions on Network and Service Management, no. 1 (2017): 121--135. https://doi.org/10.1109/TNSM.2016.2611590.' ieee: 'M. Keller and H. Karl, “Response-Time-Optimised Service Deployment: MILP Formulations of Piece-wise Linear Functions Approximating Non-linear Bivariate Mixed-integer Functions,” IEEE Transactions on Network and Service Management, no. 1, pp. 121--135, 2017.' mla: 'Keller, Matthias, and Holger Karl. “Response-Time-Optimised Service Deployment: MILP Formulations of Piece-Wise Linear Functions Approximating Non-Linear Bivariate Mixed-Integer Functions.” IEEE Transactions on Network and Service Management, no. 1, IEEE, 2017, pp. 121--135, doi:10.1109/TNSM.2016.2611590.' short: M. Keller, H. Karl, IEEE Transactions on Network and Service Management (2017) 121--135. date_created: 2017-10-17T12:41:03Z date_updated: 2022-01-06T07:03:03Z ddc: - '040' department: - _id: '75' doi: 10.1109/TNSM.2016.2611590 file: - access_level: closed content_type: application/pdf creator: florida date_created: 2018-03-21T13:15:53Z date_updated: 2018-03-21T13:15:53Z file_id: '1576' file_name: 64-07572217.pdf file_size: 1505773 relation: main_file success: 1 file_date_updated: 2018-03-21T13:15:53Z has_accepted_license: '1' issue: '1' page: 121--135 project: - _id: '1' name: SFB 901 - _id: '16' name: SFB 901 - Subprojekt C4 - _id: '4' name: SFB 901 - Project Area C publication: IEEE Transactions on Network and Service Management publisher: IEEE status: public title: 'Response-Time-Optimised Service Deployment: MILP Formulations of Piece-wise Linear Functions Approximating Non-linear Bivariate Mixed-integer Functions' type: journal_article user_id: '477' year: '2017' ... --- _id: '708' author: - first_name: Arne full_name: Schwabe, Arne last_name: Schwabe - first_name: Elisa full_name: Rojas, Elisa last_name: Rojas - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: 'Schwabe A, Rojas E, Karl H. Minimizing downtimes: Using dynamic reconfiguration and state management in SDN. In: 2017 {IEEE} Conference on Network Softwarization, NetSoft 2017, Bologna, Italy, July 3-7, 2017. ; 2017:1--5. doi:10.1109/NETSOFT.2017.8004209' apa: 'Schwabe, A., Rojas, E., & Karl, H. (2017). Minimizing downtimes: Using dynamic reconfiguration and state management in SDN. In 2017 {IEEE} Conference on Network Softwarization, NetSoft 2017, Bologna, Italy, July 3-7, 2017 (pp. 1--5). Bologna. https://doi.org/10.1109/NETSOFT.2017.8004209' bibtex: '@inproceedings{Schwabe_Rojas_Karl_2017, title={Minimizing downtimes: Using dynamic reconfiguration and state management in SDN}, DOI={10.1109/NETSOFT.2017.8004209}, booktitle={2017 {IEEE} Conference on Network Softwarization, NetSoft 2017, Bologna, Italy, July 3-7, 2017}, author={Schwabe, Arne and Rojas, Elisa and Karl, Holger}, year={2017}, pages={1--5} }' chicago: 'Schwabe, Arne, Elisa Rojas, and Holger Karl. “Minimizing Downtimes: Using Dynamic Reconfiguration and State Management in SDN.” In 2017 {IEEE} Conference on Network Softwarization, NetSoft 2017, Bologna, Italy, July 3-7, 2017, 1--5, 2017. https://doi.org/10.1109/NETSOFT.2017.8004209.' ieee: 'A. Schwabe, E. Rojas, and H. Karl, “Minimizing downtimes: Using dynamic reconfiguration and state management in SDN,” in 2017 {IEEE} Conference on Network Softwarization, NetSoft 2017, Bologna, Italy, July 3-7, 2017, Bologna, 2017, pp. 1--5.' mla: 'Schwabe, Arne, et al. “Minimizing Downtimes: Using Dynamic Reconfiguration and State Management in SDN.” 2017 {IEEE} Conference on Network Softwarization, NetSoft 2017, Bologna, Italy, July 3-7, 2017, 2017, pp. 1--5, doi:10.1109/NETSOFT.2017.8004209.' short: 'A. Schwabe, E. Rojas, H. Karl, in: 2017 {IEEE} Conference on Network Softwarization, NetSoft 2017, Bologna, Italy, July 3-7, 2017, 2017, pp. 1--5.' conference: location: Bologna date_created: 2017-11-20T08:29:25Z date_updated: 2022-01-06T07:03:27Z department: - _id: '75' doi: 10.1109/NETSOFT.2017.8004209 page: 1--5 publication: 2017 {IEEE} Conference on Network Softwarization, NetSoft 2017, Bologna, Italy, July 3-7, 2017 quality_controlled: '1' status: public title: 'Minimizing downtimes: Using dynamic reconfiguration and state management in SDN' type: conference user_id: '15572' year: '2017' ... --- _id: '717' abstract: - lang: eng text: In conventional large-scale networks, creation and management of network services are costly and complex tasks that often consume a lot of resources, including time and manpower. Network softwarization and network function virtualization have been introduced to tackle these problems, aiming at decreasing costs and complexity of implementing new services, maintaining the implemented services, and managing available resources in service provisioning platforms and underlying infrastructures. To experience the full potential of these approaches, innovative development support tools and service provisioning environments are needed. To answer these needs, we introduce the architecture of the open-source SONATA system, a service programming, orchestration, and management framework. We present a development toolchain for virtualized network services, fully integrated with a service platform and orchestration system. We introduce the modular and flexible architecture of our system and discuss its main components and features, such as function- and service-specific managers that allow fine-grained service management, slicing support to facilitate multi-tenancy, recursiveness for improved scalability, and full-featured DevOps support. author: - first_name: Sevil full_name: Dräxler, Sevil id: '31764' last_name: Dräxler - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl - first_name: Manuel full_name: Peuster, Manuel id: '13271' last_name: Peuster - first_name: Hadi full_name: Razzaghi Kouchaksaraei, Hadi id: '60845' last_name: Razzaghi Kouchaksaraei - first_name: Michael full_name: Bredel, Michael last_name: Bredel - first_name: Johannes full_name: Lessmann, Johannes last_name: Lessmann - first_name: Thomas full_name: Soenen, Thomas last_name: Soenen - first_name: Wouter full_name: Tavernier, Wouter last_name: Tavernier - first_name: Sharon full_name: Mendel-Brin, Sharon last_name: Mendel-Brin - first_name: George full_name: Xilouris, George last_name: Xilouris citation: ama: 'Dräxler S, Karl H, Peuster M, et al. SONATA: Service programming and orchestration for virtualized software networks. In: 2017 IEEE International Conference on Communications Workshops (ICC Workshops). IEEE; 2017. doi:10.1109/iccw.2017.7962785' apa: 'Dräxler, S., Karl, H., Peuster, M., Razzaghi Kouchaksaraei, H., Bredel, M., Lessmann, J., … Xilouris, G. (2017). SONATA: Service programming and orchestration for virtualized software networks. In 2017 IEEE International Conference on Communications Workshops (ICC Workshops). Paris, France: IEEE. https://doi.org/10.1109/iccw.2017.7962785' bibtex: '@inproceedings{Dräxler_Karl_Peuster_Razzaghi Kouchaksaraei_Bredel_Lessmann_Soenen_Tavernier_Mendel-Brin_Xilouris_2017, title={SONATA: Service programming and orchestration for virtualized software networks}, DOI={10.1109/iccw.2017.7962785}, booktitle={2017 IEEE International Conference on Communications Workshops (ICC Workshops)}, publisher={IEEE}, author={Dräxler, Sevil and Karl, Holger and Peuster, Manuel and Razzaghi Kouchaksaraei, Hadi and Bredel, Michael and Lessmann, Johannes and Soenen, Thomas and Tavernier, Wouter and Mendel-Brin, Sharon and Xilouris, George}, year={2017} }' chicago: 'Dräxler, Sevil, Holger Karl, Manuel Peuster, Hadi Razzaghi Kouchaksaraei, Michael Bredel, Johannes Lessmann, Thomas Soenen, Wouter Tavernier, Sharon Mendel-Brin, and George Xilouris. “SONATA: Service Programming and Orchestration for Virtualized Software Networks.” In 2017 IEEE International Conference on Communications Workshops (ICC Workshops). IEEE, 2017. https://doi.org/10.1109/iccw.2017.7962785.' ieee: 'S. Dräxler et al., “SONATA: Service programming and orchestration for virtualized software networks,” in 2017 IEEE International Conference on Communications Workshops (ICC Workshops), Paris, France, 2017.' mla: 'Dräxler, Sevil, et al. “SONATA: Service Programming and Orchestration for Virtualized Software Networks.” 2017 IEEE International Conference on Communications Workshops (ICC Workshops), IEEE, 2017, doi:10.1109/iccw.2017.7962785.' short: 'S. Dräxler, H. Karl, M. Peuster, H. Razzaghi Kouchaksaraei, M. Bredel, J. Lessmann, T. Soenen, W. Tavernier, S. Mendel-Brin, G. Xilouris, in: 2017 IEEE International Conference on Communications Workshops (ICC Workshops), IEEE, 2017.' conference: end_date: 2017-05-25 location: Paris, France name: 2017 IEEE International Conference on Communications Workshops (ICC Workshops) start_date: 2017-05-21 date_created: 2017-11-22T09:42:59Z date_updated: 2022-01-06T07:03:28Z ddc: - '000' department: - _id: '75' doi: 10.1109/iccw.2017.7962785 file: - access_level: closed content_type: application/pdf creator: ups date_created: 2018-11-02T14:22:10Z date_updated: 2018-11-02T14:22:10Z file_id: '5270' file_name: 07962785.pdf file_size: 821211 relation: main_file success: 1 file_date_updated: 2018-11-02T14:22:10Z has_accepted_license: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/pdf/1605.05850.pdf oa: '1' project: - _id: '25' call_identifier: 5G PPP Phase 1 grant_number: '671517' name: 'SONATA NFV: Agile Service Development and Orchestration in 5G Virtualized Networks' - _id: '1' name: SFB 901 - _id: '4' name: SFB 901 - Project Area C - _id: '16' name: SFB 901 - Subproject C4 publication: 2017 IEEE International Conference on Communications Workshops (ICC Workshops) publication_identifier: isbn: - '9781509015252' publication_status: published publisher: IEEE status: public title: 'SONATA: Service programming and orchestration for virtualized software networks' type: conference user_id: '31764' year: '2017' ... --- _id: '723' abstract: - lang: eng text: "Developing a virtualized network service does not only involve the\r\n implementation and configuration of the network functions it is\r\n composed of but also its integration and test with management\r\n solutions that will control the service in its production\r\n environment. These integration tasks require testbeds that offer the\r\n needed network function virtualization infrastructure~(NFVI), like OpenStack, introducing a\r\n lot of management and maintenance overheads. Such testbed setups\r\n become even more complicated when the multi\r\n point-of-presence~(PoP) case, with multiple infrastructure\r\n installations, is considered.\r\n\r\n \ In this demo, we showcase an emulation platform that executes\r\n containerized network services in user-defined multi-PoP\r\n topologies. The platform does not only allow network service developers to\r\n locally test their services but also to connect real-world\r\n management and orchestration solutions to the emulated PoPs. During our\r\n interactive demonstration we focus on the integration between\r\n the emulated infrastructure and state-of-the-art orchestration\r\n \ solutions like SONATA or OSM." author: - first_name: Manuel full_name: Peuster, Manuel id: '13271' last_name: Peuster - first_name: Sevil full_name: Dräxler, Sevil id: '31764' last_name: Dräxler - first_name: Hadi full_name: Razzaghi Kouchaksaraei, Hadi id: '60845' last_name: Razzaghi Kouchaksaraei - first_name: Steven full_name: van Rossem, Steven last_name: van Rossem - first_name: Wouter full_name: Tavernier, Wouter last_name: Tavernier - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl citation: ama: 'Peuster M, Dräxler S, Razzaghi Kouchaksaraei H, van Rossem S, Tavernier W, Karl H. A flexible multi-pop infrastructure emulator for carrier-grade MANO systems. In: IEEE Conference on Network Softwarization, NetSoft 2017, Bologna, Italy, July 3-7, 2017. ; 2017:1--3. doi:10.1109/NETSOFT.2017.8004250' apa: Peuster, M., Dräxler, S., Razzaghi Kouchaksaraei, H., van Rossem, S., Tavernier, W., & Karl, H. (2017). A flexible multi-pop infrastructure emulator for carrier-grade MANO systems. In IEEE Conference on Network Softwarization, NetSoft 2017, Bologna, Italy, July 3-7, 2017 (pp. 1--3). Bologna. https://doi.org/10.1109/NETSOFT.2017.8004250 bibtex: '@inproceedings{Peuster_Dräxler_Razzaghi Kouchaksaraei_van Rossem_Tavernier_Karl_2017, title={A flexible multi-pop infrastructure emulator for carrier-grade MANO systems}, DOI={10.1109/NETSOFT.2017.8004250}, booktitle={IEEE Conference on Network Softwarization, NetSoft 2017, Bologna, Italy, July 3-7, 2017}, author={Peuster, Manuel and Dräxler, Sevil and Razzaghi Kouchaksaraei, Hadi and van Rossem, Steven and Tavernier, Wouter and Karl, Holger}, year={2017}, pages={1--3} }' chicago: Peuster, Manuel, Sevil Dräxler, Hadi Razzaghi Kouchaksaraei, Steven van Rossem, Wouter Tavernier, and Holger Karl. “A Flexible Multi-Pop Infrastructure Emulator for Carrier-Grade MANO Systems.” In IEEE Conference on Network Softwarization, NetSoft 2017, Bologna, Italy, July 3-7, 2017, 1--3, 2017. https://doi.org/10.1109/NETSOFT.2017.8004250. ieee: M. Peuster, S. Dräxler, H. Razzaghi Kouchaksaraei, S. van Rossem, W. Tavernier, and H. Karl, “A flexible multi-pop infrastructure emulator for carrier-grade MANO systems,” in IEEE Conference on Network Softwarization, NetSoft 2017, Bologna, Italy, July 3-7, 2017, Bologna, 2017, pp. 1--3. mla: Peuster, Manuel, et al. “A Flexible Multi-Pop Infrastructure Emulator for Carrier-Grade MANO Systems.” IEEE Conference on Network Softwarization, NetSoft 2017, Bologna, Italy, July 3-7, 2017, 2017, pp. 1--3, doi:10.1109/NETSOFT.2017.8004250. short: 'M. Peuster, S. Dräxler, H. Razzaghi Kouchaksaraei, S. van Rossem, W. Tavernier, H. Karl, in: IEEE Conference on Network Softwarization, NetSoft 2017, Bologna, Italy, July 3-7, 2017, 2017, pp. 1--3.' conference: location: Bologna name: IEEE Conference on Network Softwarization date_created: 2017-11-27T10:22:25Z date_updated: 2022-01-06T07:03:30Z ddc: - '000' department: - _id: '75' doi: 10.1109/NETSOFT.2017.8004250 file: - access_level: open_access content_type: application/pdf creator: peuster date_created: 2018-07-05T11:14:37Z date_updated: 2018-07-05T11:14:37Z file_id: '3432' file_name: main_ris.pdf file_size: 963155 relation: main_file file_date_updated: 2018-07-05T11:14:37Z has_accepted_license: '1' language: - iso: eng oa: '1' page: 1--3 project: - _id: '25' call_identifier: 5G PPP Phase 1 grant_number: '671517' name: 'SONATA NFV: Agile Service Development and Orchestration in 5G Virtualized Networks' publication: IEEE Conference on Network Softwarization, NetSoft 2017, Bologna, Italy, July 3-7, 2017 publication_status: published status: public title: A flexible multi-pop infrastructure emulator for carrier-grade MANO systems type: conference urn: '7236' user_id: '13271' year: '2017' ... --- _id: '87' abstract: - lang: eng text: Management of complex network services requires flexible and efficient service provisioning as well as optimized handling of continuous changes in the workload of the service.To adapt to changes in the demand, service components need to be replicated (scaling) and allocated to physical resources (placement) dynamically. In this paper, we propose a fullyautomated approach to the joint optimization problem of scaling and placement, enabling quick reaction to changes. We formalize the problem, analyze its complexity, and develop two algorithms to solve it. Extensive empirical results show the applicability andeffectiveness of the proposed approach. author: - first_name: Sevil full_name: Dräxler, Sevil id: '31764' last_name: Dräxler - first_name: Holger full_name: Karl, Holger id: '126' last_name: Karl - first_name: Zoltan Adam full_name: Mann, Zoltan Adam last_name: Mann citation: ama: 'Dräxler S, Karl H, Mann ZA. Joint Optimization of Scaling and Placement of Virtual Network Services. In: Proceedings of the 17th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid 2017). ; 2017. doi:10.1109/CCGRID.2017.25' apa: Dräxler, S., Karl, H., & Mann, Z. A. (2017). Joint Optimization of Scaling and Placement of Virtual Network Services. In Proceedings of the 17th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid 2017). https://doi.org/10.1109/CCGRID.2017.25 bibtex: '@inproceedings{Dräxler_Karl_Mann_2017, title={Joint Optimization of Scaling and Placement of Virtual Network Services}, DOI={10.1109/CCGRID.2017.25}, booktitle={Proceedings of the 17th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid 2017)}, author={Dräxler, Sevil and Karl, Holger and Mann, Zoltan Adam}, year={2017} }' chicago: Dräxler, Sevil, Holger Karl, and Zoltan Adam Mann. “Joint Optimization of Scaling and Placement of Virtual Network Services.” In Proceedings of the 17th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid 2017), 2017. https://doi.org/10.1109/CCGRID.2017.25. ieee: S. Dräxler, H. Karl, and Z. A. Mann, “Joint Optimization of Scaling and Placement of Virtual Network Services,” in Proceedings of the 17th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid 2017), 2017. mla: Dräxler, Sevil, et al. “Joint Optimization of Scaling and Placement of Virtual Network Services.” Proceedings of the 17th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid 2017), 2017, doi:10.1109/CCGRID.2017.25. short: 'S. Dräxler, H. Karl, Z.A. Mann, in: Proceedings of the 17th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid 2017), 2017.' date_created: 2017-10-17T12:41:08Z date_updated: 2022-01-06T07:03:59Z ddc: - '040' department: - _id: '75' doi: 10.1109/CCGRID.2017.25 file: - access_level: open_access content_type: application/pdf creator: sevilmeh date_created: 2018-06-25T08:07:43Z date_updated: 2018-06-25T08:07:43Z file_id: '3324' file_name: RIS.pdf file_size: 2229109 relation: main_file file_date_updated: 2018-06-25T08:07:43Z has_accepted_license: '1' oa: '1' project: - _id: '1' name: SFB 901 - _id: '16' name: SFB 901 - Subprojekt C4 - _id: '4' name: SFB 901 - Project Area C - _id: '25' call_identifier: 5G PPP Phase 1 grant_number: '671517' name: 'SONATA NFV: Agile Service Development and Orchestration in 5G Virtualized Networks' publication: Proceedings of the 17th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid 2017) status: public title: Joint Optimization of Scaling and Placement of Virtual Network Services type: conference urn: '873' user_id: '31764' year: '2017' ...