---
_id: '8240'
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. SPRING: Scaling, Placement, and Routing of Heterogeneous
    Services with Flexible Structures. In: <i>5th IEEE International Conference on
    Network Softwarization (NetSoft) 2019</i>.'
  apa: 'Dräxler, S., &#38; Karl, H. (n.d.). SPRING: Scaling, Placement, and Routing
    of Heterogeneous Services with Flexible Structures. In <i>5th IEEE International
    Conference on Network Softwarization (NetSoft) 2019</i>. Paris.'
  bibtex: '@inproceedings{Dräxler_Karl, title={SPRING: Scaling, Placement, and Routing
    of Heterogeneous Services with Flexible Structures}, booktitle={5th IEEE International
    Conference on Network Softwarization (NetSoft) 2019}, author={Dräxler, Sevil and
    Karl, Holger} }'
  chicago: 'Dräxler, Sevil, and Holger Karl. “SPRING: Scaling, Placement, and Routing
    of Heterogeneous Services with Flexible Structures.” In <i>5th IEEE International
    Conference on Network Softwarization (NetSoft) 2019</i>, n.d.'
  ieee: 'S. Dräxler and H. Karl, “SPRING: Scaling, Placement, and Routing of Heterogeneous
    Services with Flexible Structures,” in <i>5th IEEE International Conference on
    Network Softwarization (NetSoft) 2019</i>, Paris.'
  mla: 'Dräxler, Sevil, and Holger Karl. “SPRING: Scaling, Placement, and Routing
    of Heterogeneous Services with Flexible Structures.” <i>5th IEEE International
    Conference on Network Softwarization (NetSoft) 2019</i>.'
  short: 'S. Dräxler, H. Karl, in: 5th IEEE International Conference on Network Softwarization
    (NetSoft) 2019, n.d.'
conference:
  end_date: 2019-06-28
  location: Paris
  name: 5th IEEE International Conference on Network Softwarization (NetSoft) 2019
  start_date: 2019-06-24
date_created: 2019-03-04T09:23:54Z
date_updated: 2022-01-06T07:03:52Z
department:
- _id: '75'
language:
- iso: eng
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: 5th IEEE International Conference on Network Softwarization (NetSoft)
  2019
publication_status: accepted
status: public
title: 'SPRING: Scaling, Placement, and Routing of Heterogeneous Services with Flexible
  Structures'
type: conference
user_id: '31764'
year: '2019'
...
---
_id: '13124'
author:
- first_name: Sevil
  full_name: Dräxler, Sevil
  id: '31764'
  last_name: Dräxler
citation:
  ama: Dräxler S. <i>Scaling, Placement, and Routing for Pliable Virtualized Composed
    Services</i>. Universität Paderborn; 2019.
  apa: Dräxler, S. (2019). <i>Scaling, placement, and routing for pliable virtualized
    composed services</i>. Universität Paderborn.
  bibtex: '@book{Dräxler_2019, title={Scaling, placement, and routing for pliable
    virtualized composed services}, publisher={Universität Paderborn}, author={Dräxler,
    Sevil}, year={2019} }'
  chicago: Dräxler, Sevil. <i>Scaling, Placement, and Routing for Pliable Virtualized
    Composed Services</i>. Universität Paderborn, 2019.
  ieee: S. Dräxler, <i>Scaling, placement, and routing for pliable virtualized composed
    services</i>. Universität Paderborn, 2019.
  mla: Dräxler, Sevil. <i>Scaling, Placement, and Routing for Pliable Virtualized
    Composed Services</i>. Universität Paderborn, 2019.
  short: S. Dräxler, Scaling, Placement, and Routing for Pliable Virtualized Composed
    Services, Universität Paderborn, 2019.
date_created: 2019-09-03T12:16:32Z
date_updated: 2022-01-06T06:51:28Z
department:
- _id: '75'
language:
- iso: eng
project:
- _id: '1'
  name: SFB 901
- _id: '4'
  name: SFB 901 - Project Area C
- _id: '16'
  name: SFB 901 - Subproject C4
publisher: Universität Paderborn
status: public
supervisor:
- first_name: Holger
  full_name: Karl, Holger
  id: '126'
  last_name: Karl
title: Scaling, placement, and routing for pliable virtualized composed services
type: dissertation
user_id: '477'
year: '2019'
...
---
_id: '2480'
abstract:
- lang: eng
  text: Understanding the behavior of the components of service function chains (SFCs)
    in different load situations is important for efficient and automatic management
    and orches- tration of services. For this purpose and for practical research in
    network function virtualization in general, there is a great need for benchmarks
    and experimental data. In this paper, we describe our experiments for characterizing
    the relationship between resource demands of virtual network functions (VNFs)
    and the expected performance of the SFC, considering the individual performance
    of the VNFs as well as the interdependencies among VNFs within the SFC. We have
    designed our experiments focusing on video streaming, an important application
    in this context. We present examples of models for predicting the interdependence
    between resource demands and performance characteristics of SFCs using support
    vector regression and polynomial regression models. We also show practical evidence
    from our experiments that VNFs need to be benchmarked in their final chain setup,
    rather than individually, to capture important interdependencies that affect their
    performance. The data gathered from our experiments is publicly available.
author:
- first_name: Sevil
  full_name: Dräxler, Sevil
  id: '31764'
  last_name: Dräxler
- first_name: Manuel
  full_name: Peuster, Manuel
  id: '13271'
  last_name: Peuster
- first_name: Marvin
  full_name: Illian, Marvin
  last_name: Illian
- first_name: Holger
  full_name: Karl, Holger
  id: '126'
  last_name: Karl
citation:
  ama: 'Dräxler S, Peuster M, Illian M, Karl H. Generating Resource and Performance
    Models for Service Function Chains: The Video Streaming Case. In: <i>4th IEEE
    International Conference on Network Softwarization (NetSoft 2018)</i>. IEEE; 2018:318--322.
    doi:<a href="https://doi.org/10.1109/NETSOFT.2018.8460029">10.1109/NETSOFT.2018.8460029</a>'
  apa: 'Dräxler, S., Peuster, M., Illian, M., &#38; Karl, H. (2018). Generating Resource
    and Performance Models for Service Function Chains: The Video Streaming Case.
    In <i>4th IEEE International Conference on Network Softwarization (NetSoft 2018)</i>
    (pp. 318--322). Montreal: IEEE. <a href="https://doi.org/10.1109/NETSOFT.2018.8460029">https://doi.org/10.1109/NETSOFT.2018.8460029</a>'
  bibtex: '@inproceedings{Dräxler_Peuster_Illian_Karl_2018, title={Generating Resource
    and Performance Models for Service Function Chains: The Video Streaming Case},
    DOI={<a href="https://doi.org/10.1109/NETSOFT.2018.8460029">10.1109/NETSOFT.2018.8460029</a>},
    booktitle={4th IEEE International Conference on Network Softwarization (NetSoft
    2018)}, publisher={IEEE}, author={Dräxler, Sevil and Peuster, Manuel and Illian,
    Marvin and Karl, Holger}, year={2018}, pages={318--322} }'
  chicago: 'Dräxler, Sevil, Manuel Peuster, Marvin Illian, and Holger Karl. “Generating
    Resource and Performance Models for Service Function Chains: The Video Streaming
    Case.” In <i>4th IEEE International Conference on Network Softwarization (NetSoft
    2018)</i>, 318--322. IEEE, 2018. <a href="https://doi.org/10.1109/NETSOFT.2018.8460029">https://doi.org/10.1109/NETSOFT.2018.8460029</a>.'
  ieee: 'S. Dräxler, M. Peuster, M. Illian, and H. Karl, “Generating Resource and
    Performance Models for Service Function Chains: The Video Streaming Case,” in
    <i>4th IEEE International Conference on Network Softwarization (NetSoft 2018)</i>,
    Montreal, 2018, pp. 318--322.'
  mla: 'Dräxler, Sevil, et al. “Generating Resource and Performance Models for Service
    Function Chains: The Video Streaming Case.” <i>4th IEEE International Conference
    on Network Softwarization (NetSoft 2018)</i>, IEEE, 2018, pp. 318--322, doi:<a
    href="https://doi.org/10.1109/NETSOFT.2018.8460029">10.1109/NETSOFT.2018.8460029</a>.'
  short: 'S. Dräxler, M. Peuster, M. Illian, H. Karl, in: 4th IEEE International Conference
    on Network Softwarization (NetSoft 2018), IEEE, 2018, pp. 318--322.'
conference:
  end_date: 2018-07-29
  location: Montreal
  name: 4th IEEE International Conference on Network Softwarization (NetSoft 2018)
  start_date: 2018-07-25
date_created: 2018-04-24T12:11:36Z
date_updated: 2022-01-06T06:56:37Z
ddc:
- '004'
department:
- _id: '75'
doi: 10.1109/NETSOFT.2018.8460029
file:
- access_level: closed
  content_type: application/pdf
  creator: ups
  date_created: 2018-12-12T15:18:12Z
  date_updated: 2018-12-12T15:18:12Z
  file_id: '6195'
  file_name: 08460029.pdf
  file_size: 2211450
  relation: main_file
  success: 1
- access_level: open_access
  content_type: application/pdf
  creator: sevilmeh
  date_created: 2019-01-24T10:17:00Z
  date_updated: 2019-01-24T10:17:00Z
  file_id: '6968'
  file_name: NetSoft18_RIS.pdf
  file_size: 3445650
  relation: main_file
file_date_updated: 2019-01-24T10:17:00Z
has_accepted_license: '1'
language:
- iso: eng
oa: '1'
page: 318--322
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: 4th IEEE International Conference on Network Softwarization (NetSoft
  2018)
publisher: IEEE
status: public
title: 'Generating Resource and Performance Models for Service Function Chains: The
  Video Streaming Case'
type: conference
user_id: '31764'
year: '2018'
...
---
_id: '2481'
abstract:
- lang: eng
  text: Network function virtualization requires scaling and placement, deciding the
    number and the location of function instances. Current approaches are limited
    in flexibility and practical applicability. Specifically, we study dynamic, single-step,
    joint scaling and placement of network services with bidirectional flows traversing
    Physical or Virtual Network Functions (VNFs) and returning to their sources. We
    develop models to support stateful components and legacy network functions with
    fixed locations in these network services as well as the possibility of reusing
    VNFs across network services. We formalize the problem of jointly scaling and
    placing such network services as a mixed- integer linear program (MILP). We show
    that this problem is NP-complete and also present a heuristic algorithm to find
    good solutions in short time. In an extensive evaluation with realistic scenarios,
    we investigate the capabilities of the two approaches.
author:
- first_name: Sevil
  full_name: Dräxler, Sevil
  id: '31764'
  last_name: Dräxler
- first_name: Stefan Balthasar
  full_name: Schneider, Stefan Balthasar
  id: '35343'
  last_name: Schneider
  orcid: 0000-0001-8210-4011
- first_name: Holger
  full_name: Karl, Holger
  id: '126'
  last_name: Karl
citation:
  ama: 'Dräxler S, Schneider SB, Karl H.  Scaling and Placing Bidirectional Services
    with Stateful Virtual and Physical Network Functions. In: <i>4th IEEE International
    Conference on Network Softwarization (NetSoft 2018)</i>. IEEE; 2018:123--131.'
  apa: 'Dräxler, S., Schneider, S. B., &#38; Karl, H. (2018).  Scaling and Placing
    Bidirectional Services with Stateful Virtual and Physical Network Functions. In
    <i>4th IEEE International Conference on Network Softwarization (NetSoft 2018)</i>
    (pp. 123--131). Montreal: IEEE.'
  bibtex: '@inproceedings{Dräxler_Schneider_Karl_2018, title={ Scaling and Placing
    Bidirectional Services with Stateful Virtual and Physical Network Functions},
    booktitle={4th IEEE International Conference on Network Softwarization (NetSoft
    2018)}, publisher={IEEE}, author={Dräxler, Sevil and Schneider, Stefan Balthasar
    and Karl, Holger}, year={2018}, pages={123--131} }'
  chicago: Dräxler, Sevil, Stefan Balthasar Schneider, and Holger Karl. “ Scaling
    and Placing Bidirectional Services with Stateful Virtual and Physical Network
    Functions.” In <i>4th IEEE International Conference on Network Softwarization
    (NetSoft 2018)</i>, 123--131. IEEE, 2018.
  ieee: S. Dräxler, S. B. Schneider, and H. Karl, “ Scaling and Placing Bidirectional
    Services with Stateful Virtual and Physical Network Functions,” in <i>4th IEEE
    International Conference on Network Softwarization (NetSoft 2018)</i>, Montreal,
    2018, pp. 123--131.
  mla: Dräxler, Sevil, et al. “ Scaling and Placing Bidirectional Services with Stateful
    Virtual and Physical Network Functions.” <i>4th IEEE International Conference
    on Network Softwarization (NetSoft 2018)</i>, IEEE, 2018, pp. 123--131.
  short: 'S. Dräxler, S.B. Schneider, H. Karl, in: 4th IEEE International Conference
    on Network Softwarization (NetSoft 2018), IEEE, 2018, pp. 123--131.'
conference:
  location: Montreal
  name: 4th IEEE International Conference on Network Softwarization (NetSoft 2018)
date_created: 2018-04-24T12:14:00Z
date_updated: 2022-01-06T06:56:38Z
ddc:
- '040'
department:
- _id: '75'
file:
- access_level: open_access
  content_type: application/pdf
  creator: sevilmeh
  date_created: 2018-06-25T07:40:57Z
  date_updated: 2018-06-25T07:40:57Z
  file_id: '3319'
  file_name: RIS.pdf
  file_size: 1471937
  relation: main_file
file_date_updated: 2018-06-25T07:40:57Z
has_accepted_license: '1'
language:
- iso: eng
oa: '1'
page: 123--131
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: published
publisher: IEEE
status: public
title: ' Scaling and Placing Bidirectional Services with Stateful Virtual and Physical
  Network Functions'
type: conference
urn: '24814'
user_id: '477'
year: '2018'
...
---
_id: '2482'
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: Hadi
  full_name: Razzaghi Kouchaksaraei, Hadi
  id: '60845'
  last_name: Razzaghi Kouchaksaraei
- first_name: Azahar
  full_name: Machwe, Azahar
  last_name: Machwe
- first_name: Crispin
  full_name: Dent-Young, Crispin
  last_name: Dent-Young
- first_name: Kostas
  full_name: Katsalis, Kostas
  last_name: Katsalis
- first_name: Konstantinos
  full_name: Samdanis, Konstantinos
  last_name: Samdanis
citation:
  ama: 'Dräxler S, Karl H, Razzaghi Kouchaksaraei H, et al. 5G OS: Control and Orchestration
    of Services on Multi-Domain Heterogeneous 5G Infrastructures. In: <i>27th European
    Conference on Networks and Communications (EUCNC 2018)</i>.'
  apa: 'Dräxler, S., Karl, H., Razzaghi Kouchaksaraei, H., Machwe, A., Dent-Young,
    C., Katsalis, K., &#38; Samdanis, K. (n.d.). 5G OS: Control and Orchestration
    of Services on Multi-Domain Heterogeneous 5G Infrastructures. In <i>27th European
    Conference on Networks and Communications (EUCNC 2018)</i>. Ljubljana.'
  bibtex: '@inproceedings{Dräxler_Karl_Razzaghi Kouchaksaraei_Machwe_Dent-Young_Katsalis_Samdanis,
    title={5G OS: Control and Orchestration of Services on Multi-Domain Heterogeneous
    5G Infrastructures}, booktitle={27th European Conference on Networks and Communications
    (EUCNC 2018)}, author={Dräxler, Sevil and Karl, Holger and Razzaghi Kouchaksaraei,
    Hadi and Machwe, Azahar and Dent-Young, Crispin and Katsalis, Kostas and Samdanis,
    Konstantinos} }'
  chicago: 'Dräxler, Sevil, Holger Karl, Hadi Razzaghi Kouchaksaraei, Azahar Machwe,
    Crispin Dent-Young, Kostas Katsalis, and Konstantinos Samdanis. “5G OS: Control
    and Orchestration of Services on Multi-Domain Heterogeneous 5G Infrastructures.”
    In <i>27th European Conference on Networks and Communications (EUCNC 2018)</i>,
    n.d.'
  ieee: 'S. Dräxler <i>et al.</i>, “5G OS: Control and Orchestration of Services on
    Multi-Domain Heterogeneous 5G Infrastructures,” in <i>27th European Conference
    on Networks and Communications (EUCNC 2018)</i>, Ljubljana.'
  mla: 'Dräxler, Sevil, et al. “5G OS: Control and Orchestration of Services on Multi-Domain
    Heterogeneous 5G Infrastructures.” <i>27th European Conference on Networks and
    Communications (EUCNC 2018)</i>.'
  short: 'S. Dräxler, H. Karl, H. Razzaghi Kouchaksaraei, A. Machwe, C. Dent-Young,
    K. Katsalis, K. Samdanis, in: 27th European Conference on Networks and Communications
    (EUCNC 2018), n.d.'
conference:
  end_date: 2018-07-21
  location: Ljubljana
  name: 27th European Conference on Networks and Communications (EUCNC 2018)
  start_date: 2018-07-18
date_created: 2018-04-24T12:17:15Z
date_updated: 2022-01-06T06:56:38Z
ddc:
- '000'
file:
- access_level: open_access
  content_type: application/pdf
  creator: sevilmeh
  date_created: 2019-01-24T10:29:12Z
  date_updated: 2019-01-24T10:29:12Z
  file_id: '6969'
  file_name: eucnc18_RIS.pdf
  file_size: 215571
  relation: main_file
file_date_updated: 2019-01-24T10:29:12Z
has_accepted_license: '1'
language:
- iso: eng
oa: '1'
project:
- _id: '23'
  grant_number: '762057'
  name: 5G Programmable Infrastructure Converging disaggregated neTwork and compUte
    Resources
publication: 27th European Conference on Networks and Communications (EUCNC 2018)
publication_status: accepted
status: public
title: '5G OS: Control and Orchestration of Services on Multi-Domain Heterogeneous
  5G Infrastructures'
type: conference
user_id: '31764'
year: '2018'
...
---
_id: '2483'
abstract:
- lang: eng
  text: Understanding the behavior of distributed cloud service components in different
    load situations is important for efficient and automatic management and orchestration
    of these services. For this purpose and for practical research in distributed
    cloud computing in general, there is need for benchmarks and experimental data.
    In this paper, we describe our experiments for characterizing the relationship
    between resource demands of application components and the expected performance
    of applica- tions. We present initial results for predicting the interdependence
    between resource demands and performance characteristics using support vector
    regression and polynomial regression models. The data gathered from our experiments
    is publicly available.
author:
- first_name: Sevil
  full_name: Dräxler, Sevil
  id: '31764'
  last_name: Dräxler
- first_name: Manuel
  full_name: Peuster, Manuel
  id: '13271'
  last_name: Peuster
- first_name: Marvin
  full_name: Illian, Marvin
  last_name: Illian
- first_name: Holger
  full_name: Karl, Holger
  id: '126'
  last_name: Karl
citation:
  ama: Dräxler S, Peuster M, Illian M, Karl H. <i>Towards Predicting Resource Demands
    and Performance of Distributed Cloud Services</i>. Wien, Darmstadt; 2018.
  apa: Dräxler, S., Peuster, M., Illian, M., &#38; Karl, H. (2018). <i>Towards Predicting
    Resource Demands and Performance of Distributed Cloud Services</i>. Wien, Darmstadt.
  bibtex: '@book{Dräxler_Peuster_Illian_Karl_2018, place={Wien, Darmstadt}, series={KuVS-Fachgespräch
    Fog Computing 2018}, title={Towards Predicting Resource Demands and Performance
    of Distributed Cloud Services}, author={Dräxler, Sevil and Peuster, Manuel and
    Illian, Marvin and Karl, Holger}, year={2018}, collection={KuVS-Fachgespräch Fog
    Computing 2018} }'
  chicago: Dräxler, Sevil, Manuel Peuster, Marvin Illian, and Holger Karl. <i>Towards
    Predicting Resource Demands and Performance of Distributed Cloud Services</i>.
    KuVS-Fachgespräch Fog Computing 2018. Wien, Darmstadt, 2018.
  ieee: S. Dräxler, M. Peuster, M. Illian, and H. Karl, <i>Towards Predicting Resource
    Demands and Performance of Distributed Cloud Services</i>. Wien, Darmstadt, 2018.
  mla: Dräxler, Sevil, et al. <i>Towards Predicting Resource Demands and Performance
    of Distributed Cloud Services</i>. 2018.
  short: S. Dräxler, M. Peuster, M. Illian, H. Karl, Towards Predicting Resource Demands
    and Performance of Distributed Cloud Services, Wien, Darmstadt, 2018.
date_created: 2018-04-24T12:22:40Z
date_updated: 2022-01-06T06:56:38Z
ddc:
- '000'
department:
- _id: '75'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://www.infosys.tuwien.ac.at/docs/proceedings.pdf#page=14
oa: '1'
place: Wien, Darmstadt
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_status: published
related_material:
  link:
  - relation: confirmation
    url: http://repositum.tuwien.ac.at/obvutwoa/content/titleinfo/2514843
series_title: KuVS-Fachgespräch Fog Computing 2018
status: public
title: Towards Predicting Resource Demands and Performance of Distributed Cloud Services
type: report
user_id: '31764'
year: '2018'
...
---
_id: '2666'
abstract:
- lang: eng
  text: Supporting the vast variety of network services’ management and orchestration
    requirements is one of the main challenges that Network Function Virtualization
    (NFV) is dealing with. While general management requirements such as Virtual Network
    Function (VNF) resource requirements can be specified by the service developers
    using service descriptors, specific management operations like VNF-specific configuration
    cannot be performed by these descriptors. On the other hand, it is inefficient
    and also very challenging for Management and Orchestration (MANO) frameworks to
    provide all specific-management operations for every individual network service
    and their constituent VNFs. To mitigate this issue, we propose the use of service-specific
    programs called Specific Managers (SMs) that can customize management and orchestration
    of network services and also extend the capability of MANO frameworks to support
    per-service management and orchestration. The results of our evaluation show that
    the higher flexibility and programmability enabled by SMs improve the performance
    of the service performance and also utilises the service provider resources more
    efficiently.
author:
- first_name: Hadi
  full_name: Razzaghi Kouchaksaraei, Hadi
  id: '60845'
  last_name: Razzaghi Kouchaksaraei
- first_name: Sevil
  full_name: Dräxler, Sevil
  id: '31764'
  last_name: Dräxler
- 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: 'Razzaghi Kouchaksaraei H, Dräxler S, Peuster M, Karl H. Programmable and Flexible
    Management and Orchestration of Virtualized Network Functions. In: <i>2018 European
    Conference on Networks and Communications (EuCNC)</i>. Ljubljana, Slovenia: IEEE.'
  apa: 'Razzaghi Kouchaksaraei, H., Dräxler, S., Peuster, M., &#38; Karl, H. (n.d.).
    Programmable and Flexible Management and Orchestration of Virtualized Network
    Functions. In <i>2018 European Conference on Networks and Communications (EuCNC)</i>.
    Ljubljana, Slovenia: IEEE.'
  bibtex: '@inproceedings{Razzaghi Kouchaksaraei_Dräxler_Peuster_Karl, place={Ljubljana,
    Slovenia}, title={Programmable and Flexible Management and Orchestration of Virtualized
    Network Functions}, booktitle={2018 European Conference on Networks and Communications
    (EuCNC)}, publisher={IEEE}, author={Razzaghi Kouchaksaraei, Hadi and Dräxler,
    Sevil and Peuster, Manuel and Karl, Holger} }'
  chicago: 'Razzaghi Kouchaksaraei, Hadi, Sevil Dräxler, Manuel Peuster, and Holger
    Karl. “Programmable and Flexible Management and Orchestration of Virtualized Network
    Functions.” In <i>2018 European Conference on Networks and Communications (EuCNC)</i>.
    Ljubljana, Slovenia: IEEE, n.d.'
  ieee: H. Razzaghi Kouchaksaraei, S. Dräxler, M. Peuster, and H. Karl, “Programmable
    and Flexible Management and Orchestration of Virtualized Network Functions,” in
    <i>2018 European Conference on Networks and Communications (EuCNC)</i>, Ljubljana,
    Slovenia.
  mla: Razzaghi Kouchaksaraei, Hadi, et al. “Programmable and Flexible Management
    and Orchestration of Virtualized Network Functions.” <i>2018 European Conference
    on Networks and Communications (EuCNC)</i>, IEEE.
  short: 'H. Razzaghi Kouchaksaraei, S. Dräxler, M. Peuster, H. Karl, in: 2018 European
    Conference on Networks and Communications (EuCNC), IEEE, Ljubljana, Slovenia,
    n.d.'
conference:
  end_date: 2018-06-21
  location: Ljubljana, Slovenia
  name: European Conference on Networks and Communications (EUCNC)
  start_date: 2018-06-18
date_created: 2018-05-07T12:30:54Z
date_updated: 2022-01-06T06:57:25Z
ddc:
- '004'
department:
- _id: '34'
file:
- access_level: open_access
  content_type: application/pdf
  creator: hadik3r
  date_created: 2018-06-25T13:52:03Z
  date_updated: 2018-06-25T13:58:12Z
  file_id: '3357'
  file_name: specific_management.pdf
  file_size: 183859
  relation: main_file
file_date_updated: 2018-06-25T13:58:12Z
has_accepted_license: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
place: Ljubljana, Slovenia
project:
- _id: '23'
  grant_number: '762057'
  name: 5G Programmable Infrastructure Converging disaggregated neTwork and compUte
    Resources
publication: 2018 European Conference on Networks and Communications (EuCNC)
publication_status: accepted
publisher: IEEE
status: public
title: Programmable and Flexible Management and Orchestration of Virtualized Network
  Functions
type: conference
urn: '26669'
user_id: '60845'
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. <i>IEEE Transactions on Network and Service
    Management</i>. 2018. doi:<a href="https://doi.org/10.1109/TNSM.2018.2846572">10.1109/TNSM.2018.2846572</a>'
  apa: 'Dräxler, S., Karl, H., &#38; Mann, Z. A. (2018). JASPER: Joint Optimization
    of Scaling, Placement, and Routing of Virtual Network Services. <i>IEEE Transactions
    on Network and Service Management</i>. <a href="https://doi.org/10.1109/TNSM.2018.2846572">https://doi.org/10.1109/TNSM.2018.2846572</a>'
  bibtex: '@article{Dräxler_Karl_Mann_2018, title={JASPER: Joint Optimization of Scaling,
    Placement, and Routing of Virtual Network Services}, DOI={<a href="https://doi.org/10.1109/TNSM.2018.2846572">10.1109/TNSM.2018.2846572</a>},
    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.” <i>IEEE Transactions
    on Network and Service Management</i>, 2018. <a href="https://doi.org/10.1109/TNSM.2018.2846572">https://doi.org/10.1109/TNSM.2018.2846572</a>.'
  ieee: 'S. Dräxler, H. Karl, and Z. A. Mann, “JASPER: Joint Optimization of Scaling,
    Placement, and Routing of Virtual Network Services,” <i>IEEE Transactions on Network
    and Service Management</i>, 2018.'
  mla: 'Dräxler, Sevil, et al. “JASPER: Joint Optimization of Scaling, Placement,
    and Routing of Virtual Network Services.” <i>IEEE Transactions on Network and
    Service Management</i>, IEEE, 2018, doi:<a href="https://doi.org/10.1109/TNSM.2018.2846572">10.1109/TNSM.2018.2846572</a>.'
  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: '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: <i>IEEE Global Communications Conference
    (GLOBECOM 2018)</i>. IEEE; 2018.'
  apa: 'Schneider, S. B., Dräxler, S., &#38; Karl, H. (2018). Trade-offs in Dynamic
    Resource Allocation in Network Function Virtualization. In <i>IEEE Global Communications
    Conference (GLOBECOM 2018)</i>. 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 <i>IEEE
    Global Communications Conference (GLOBECOM 2018)</i>. IEEE, 2018.
  ieee: S. B. Schneider, S. Dräxler, and H. Karl, “Trade-offs in Dynamic Resource
    Allocation in Network Function Virtualization,” in <i>IEEE Global Communications
    Conference (GLOBECOM 2018)</i>, Abu Dhabi, UAE, 2018.
  mla: Schneider, Stefan Balthasar, et al. “Trade-Offs in Dynamic Resource Allocation
    in Network Function Virtualization.” <i>IEEE Global Communications Conference
    (GLOBECOM 2018)</i>, 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: '30858'
author:
- first_name: Sevil
  full_name: Dräxler, Sevil
  id: '31764'
  last_name: Dräxler
- first_name: Manuel
  full_name: Peuster, Manuel
  id: '13271'
  last_name: Peuster
- first_name: Marvin
  full_name: Illian, Marvin
  id: '44169'
  last_name: Illian
  orcid: 0009-0007-2992-8346
- first_name: Holger
  full_name: Karl, Holger
  id: '126'
  last_name: Karl
citation:
  ama: 'Dräxler S, Peuster M, Illian M, Karl H. Generating Resource and Performance
    Models for Service Function Chains: The Video Streaming Case. In: <i>2018 4th
    IEEE Conference on Network Softwarization and Workshops (NetSoft)</i>. IEEE; 2018.
    doi:<a href="https://doi.org/10.1109/netsoft.2018.8460029">10.1109/netsoft.2018.8460029</a>'
  apa: 'Dräxler, S., Peuster, M., Illian, M., &#38; Karl, H. (2018). Generating Resource
    and Performance Models for Service Function Chains: The Video Streaming Case.
    <i>2018 4th IEEE Conference on Network Softwarization and Workshops (NetSoft)</i>.
    <a href="https://doi.org/10.1109/netsoft.2018.8460029">https://doi.org/10.1109/netsoft.2018.8460029</a>'
  bibtex: '@inproceedings{Dräxler_Peuster_Illian_Karl_2018, title={Generating Resource
    and Performance Models for Service Function Chains: The Video Streaming Case},
    DOI={<a href="https://doi.org/10.1109/netsoft.2018.8460029">10.1109/netsoft.2018.8460029</a>},
    booktitle={2018 4th IEEE Conference on Network Softwarization and Workshops (NetSoft)},
    publisher={IEEE}, author={Dräxler, Sevil and Peuster, Manuel and Illian, Marvin
    and Karl, Holger}, year={2018} }'
  chicago: 'Dräxler, Sevil, Manuel Peuster, Marvin Illian, and Holger Karl. “Generating
    Resource and Performance Models for Service Function Chains: The Video Streaming
    Case.” In <i>2018 4th IEEE Conference on Network Softwarization and Workshops
    (NetSoft)</i>. IEEE, 2018. <a href="https://doi.org/10.1109/netsoft.2018.8460029">https://doi.org/10.1109/netsoft.2018.8460029</a>.'
  ieee: 'S. Dräxler, M. Peuster, M. Illian, and H. Karl, “Generating Resource and
    Performance Models for Service Function Chains: The Video Streaming Case,” 2018,
    doi: <a href="https://doi.org/10.1109/netsoft.2018.8460029">10.1109/netsoft.2018.8460029</a>.'
  mla: 'Dräxler, Sevil, et al. “Generating Resource and Performance Models for Service
    Function Chains: The Video Streaming Case.” <i>2018 4th IEEE Conference on Network
    Softwarization and Workshops (NetSoft)</i>, IEEE, 2018, doi:<a href="https://doi.org/10.1109/netsoft.2018.8460029">10.1109/netsoft.2018.8460029</a>.'
  short: 'S. Dräxler, M. Peuster, M. Illian, H. Karl, in: 2018 4th IEEE Conference
    on Network Softwarization and Workshops (NetSoft), IEEE, 2018.'
date_created: 2022-04-08T06:12:20Z
date_updated: 2025-09-12T11:17:05Z
doi: 10.1109/netsoft.2018.8460029
language:
- iso: eng
publication: 2018 4th IEEE Conference on Network Softwarization and Workshops (NetSoft)
publication_status: published
publisher: IEEE
status: public
title: 'Generating Resource and Performance Models for Service Function Chains: The
  Video Streaming Case'
type: conference
user_id: '44169'
year: '2018'
...
---
_id: '61268'
citation:
  ama: Dräxler S, Peuster M, Illian M, Karl H, eds. <i>Towards Predicting Resource
    Demands and Performance of Distributed Cloud Services</i>.; 2018.
  apa: Dräxler, S., Peuster, M., Illian, M., &#38; Karl, H. (Eds.). (2018). <i>Towards
    Predicting Resource Demands and Performance of Distributed Cloud Services</i>.
  bibtex: '@book{Dräxler_Peuster_Illian_Karl_2018, title={Towards Predicting Resource
    Demands and Performance of Distributed Cloud Services}, year={2018} }'
  chicago: Dräxler, Sevil, Manuel Peuster, Marvin Illian, and Holger Karl, eds. <i>Towards
    Predicting Resource Demands and Performance of Distributed Cloud Services</i>,
    2018.
  ieee: S. Dräxler, M. Peuster, M. Illian, and H. Karl, Eds., <i>Towards Predicting
    Resource Demands and Performance of Distributed Cloud Services</i>. 2018.
  mla: Dräxler, Sevil, et al., editors. <i>Towards Predicting Resource Demands and
    Performance of Distributed Cloud Services</i>. 2018.
  short: S. Dräxler, M. Peuster, M. Illian, H. Karl, eds., Towards Predicting Resource
    Demands and Performance of Distributed Cloud Services, 2018.
conference:
  end_date: 2018-03-08
  location: Darmstadt, Germany
  name: KuVS-Fachgespräch Fog Computing 2018
  start_date: 2018-03-08
date_created: 2025-09-12T11:46:28Z
date_updated: 2025-09-12T11:46:33Z
editor:
- first_name: Sevil
  full_name: Dräxler, Sevil
  id: '31764'
  last_name: Dräxler
- first_name: Manuel
  full_name: Peuster, Manuel
  id: '13271'
  last_name: Peuster
- first_name: Marvin
  full_name: Illian, Marvin
  id: '44169'
  last_name: Illian
  orcid: 0009-0007-2992-8346
- first_name: Holger
  full_name: Karl, Holger
  id: '126'
  last_name: Karl
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://dsg.tuwien.ac.at/docs/proceedings.pdf#page=14
oa: '1'
status: public
title: Towards Predicting Resource Demands and Performance of Distributed Cloud Services
type: conference_editor
user_id: '44169'
year: '2018'
...
---
_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. <i>International Journal of Network Management</i>.
    2017;(2):1--16. doi:<a href="https://doi.org/10.1002/nem.1963">10.1002/nem.1963</a>
  apa: Dräxler, S., &#38; Karl, H. (2017). Specification, Composition, and Placement
    of Network Services with Flexible Structures. <i>International Journal of Network
    Management</i>, (2), 1--16. <a href="https://doi.org/10.1002/nem.1963">https://doi.org/10.1002/nem.1963</a>
  bibtex: '@article{Dräxler_Karl_2017, title={Specification, Composition, and Placement
    of Network Services with Flexible Structures}, DOI={<a href="https://doi.org/10.1002/nem.1963">10.1002/nem.1963</a>},
    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.” <i>International Journal of Network
    Management</i>, no. 2 (2017): 1--16. <a href="https://doi.org/10.1002/nem.1963">https://doi.org/10.1002/nem.1963</a>.'
  ieee: S. Dräxler and H. Karl, “Specification, Composition, and Placement of Network
    Services with Flexible Structures,” <i>International Journal of Network Management</i>,
    no. 2, pp. 1--16, 2017.
  mla: Dräxler, Sevil, and Holger Karl. “Specification, Composition, and Placement
    of Network Services with Flexible Structures.” <i>International Journal of Network
    Management</i>, no. 2, Wiley Online Library, 2017, pp. 1--16, doi:<a href="https://doi.org/10.1002/nem.1963">10.1002/nem.1963</a>.
  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: '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: <i>2017 IEEE International Conference on
    Communications Workshops (ICC Workshops)</i>. IEEE; 2017. doi:<a href="https://doi.org/10.1109/iccw.2017.7962785">10.1109/iccw.2017.7962785</a>'
  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 <i>2017 IEEE International Conference on
    Communications Workshops (ICC Workshops)</i>. Paris, France: IEEE. <a href="https://doi.org/10.1109/iccw.2017.7962785">https://doi.org/10.1109/iccw.2017.7962785</a>'
  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={<a href="https://doi.org/10.1109/iccw.2017.7962785">10.1109/iccw.2017.7962785</a>},
    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 <i>2017 IEEE International Conference on Communications
    Workshops (ICC Workshops)</i>. IEEE, 2017. <a href="https://doi.org/10.1109/iccw.2017.7962785">https://doi.org/10.1109/iccw.2017.7962785</a>.'
  ieee: 'S. Dräxler <i>et al.</i>, “SONATA: Service programming and orchestration
    for virtualized software networks,” in <i>2017 IEEE International Conference on
    Communications Workshops (ICC Workshops)</i>, Paris, France, 2017.'
  mla: 'Dräxler, Sevil, et al. “SONATA: Service Programming and Orchestration for
    Virtualized Software Networks.” <i>2017 IEEE International Conference on Communications
    Workshops (ICC Workshops)</i>, IEEE, 2017, doi:<a href="https://doi.org/10.1109/iccw.2017.7962785">10.1109/iccw.2017.7962785</a>.'
  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: <i>IEEE Conference on Network Softwarization, NetSoft 2017, Bologna, Italy,
    July 3-7, 2017</i>. ; 2017:1--3. doi:<a href="https://doi.org/10.1109/NETSOFT.2017.8004250">10.1109/NETSOFT.2017.8004250</a>'
  apa: Peuster, M., Dräxler, S., Razzaghi Kouchaksaraei, H., van Rossem, S., Tavernier,
    W., &#38; Karl, H. (2017). A flexible multi-pop infrastructure emulator for carrier-grade
    MANO systems. In <i>IEEE Conference on Network Softwarization, NetSoft 2017, Bologna,
    Italy, July 3-7, 2017</i> (pp. 1--3). Bologna. <a href="https://doi.org/10.1109/NETSOFT.2017.8004250">https://doi.org/10.1109/NETSOFT.2017.8004250</a>
  bibtex: '@inproceedings{Peuster_Dräxler_Razzaghi Kouchaksaraei_van Rossem_Tavernier_Karl_2017,
    title={A flexible multi-pop infrastructure emulator for carrier-grade MANO systems},
    DOI={<a href="https://doi.org/10.1109/NETSOFT.2017.8004250">10.1109/NETSOFT.2017.8004250</a>},
    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 <i>IEEE Conference on Network Softwarization,
    NetSoft 2017, Bologna, Italy, July 3-7, 2017</i>, 1--3, 2017. <a href="https://doi.org/10.1109/NETSOFT.2017.8004250">https://doi.org/10.1109/NETSOFT.2017.8004250</a>.
  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 <i>IEEE Conference on Network Softwarization, NetSoft 2017, Bologna,
    Italy, July 3-7, 2017</i>, Bologna, 2017, pp. 1--3.
  mla: Peuster, Manuel, et al. “A Flexible Multi-Pop Infrastructure Emulator for Carrier-Grade
    MANO Systems.” <i>IEEE Conference on Network Softwarization, NetSoft 2017, Bologna,
    Italy, July 3-7, 2017</i>, 2017, pp. 1--3, doi:<a href="https://doi.org/10.1109/NETSOFT.2017.8004250">10.1109/NETSOFT.2017.8004250</a>.
  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: <i>Proceedings of the 17th IEEE/ACM International
    Symposium on Cluster, Cloud and Grid Computing (CCGrid 2017)</i>. ; 2017. doi:<a
    href="https://doi.org/10.1109/CCGRID.2017.25">10.1109/CCGRID.2017.25</a>'
  apa: Dräxler, S., Karl, H., &#38; Mann, Z. A. (2017). Joint Optimization of Scaling
    and Placement of Virtual Network Services. In <i>Proceedings of the 17th IEEE/ACM
    International Symposium on Cluster, Cloud and Grid Computing (CCGrid 2017)</i>.
    <a href="https://doi.org/10.1109/CCGRID.2017.25">https://doi.org/10.1109/CCGRID.2017.25</a>
  bibtex: '@inproceedings{Dräxler_Karl_Mann_2017, title={Joint Optimization of Scaling
    and Placement of Virtual Network Services}, DOI={<a href="https://doi.org/10.1109/CCGRID.2017.25">10.1109/CCGRID.2017.25</a>},
    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 <i>Proceedings of the
    17th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGrid
    2017)</i>, 2017. <a href="https://doi.org/10.1109/CCGRID.2017.25">https://doi.org/10.1109/CCGRID.2017.25</a>.
  ieee: S. Dräxler, H. Karl, and Z. A. Mann, “Joint Optimization of Scaling and Placement
    of Virtual Network Services,” in <i>Proceedings of the 17th IEEE/ACM International
    Symposium on Cluster, Cloud and Grid Computing (CCGrid 2017)</i>, 2017.
  mla: Dräxler, Sevil, et al. “Joint Optimization of Scaling and Placement of Virtual
    Network Services.” <i>Proceedings of the 17th IEEE/ACM International Symposium
    on Cluster, Cloud and Grid Computing (CCGrid 2017)</i>, 2017, doi:<a href="https://doi.org/10.1109/CCGRID.2017.25">10.1109/CCGRID.2017.25</a>.
  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'
...
---
_id: '714'
abstract:
- lang: eng
  text: The Service Programming and Orchestration for Virtualised Software Networks
    (SONATA) project targets both the flexible programmability of software networks
    and the optimisation of their deployments by means of integrating Development
    and Operations in order to accelerate industry adoption of software networks and
    reduce time-to-market for networked services. SONATA supports network function
    chaining and orchestration, making service platforms modular and easier to customise
    to the needs of different service providers, and introduces a specialised Development
    and Operations model for supporting developers.
article_type: original
author:
- first_name: Holger
  full_name: Karl, Holger
  id: '126'
  last_name: Karl
- first_name: Sevil
  full_name: Dräxler, Sevil
  id: '31764'
  last_name: Dräxler
- first_name: Manuel
  full_name: Peuster, Manuel
  last_name: Peuster
- first_name: Alex
  full_name: Galis, Alex
  last_name: Galis
- first_name: Michael
  full_name: Bredel, Michael
  last_name: Bredel
- first_name: Aurora
  full_name: Ramos, Aurora
  last_name: Ramos
- first_name: Josep
  full_name: Martrat, Josep
  last_name: Martrat
- first_name: Muhammad Shuaib
  full_name: Siddiqui, Muhammad Shuaib
  last_name: Siddiqui
- first_name: Steven
  full_name: van Rossem, Steven
  last_name: van Rossem
- first_name: Wouter
  full_name: Tavernier, Wouter
  last_name: Tavernier
- first_name: George
  full_name: Xilouris, George
  last_name: Xilouris
citation:
  ama: 'Karl H, Dräxler S, Peuster M, et al. DevOps for network function virtualisation:
    an architectural approach. <i>Transactions on Emerging Telecommunications Technologies</i>.
    2016;27(9):1206-1215. doi:<a href="https://doi.org/10.1002/ett.3084">10.1002/ett.3084</a>'
  apa: 'Karl, H., Dräxler, S., Peuster, M., Galis, A., Bredel, M., Ramos, A., … Xilouris,
    G. (2016). DevOps for network function virtualisation: an architectural approach.
    <i>Transactions on Emerging Telecommunications Technologies</i>, <i>27</i>(9),
    1206–1215. <a href="https://doi.org/10.1002/ett.3084">https://doi.org/10.1002/ett.3084</a>'
  bibtex: '@article{Karl_Dräxler_Peuster_Galis_Bredel_Ramos_Martrat_Siddiqui_van Rossem_Tavernier_et
    al._2016, title={DevOps for network function virtualisation: an architectural
    approach}, volume={27}, DOI={<a href="https://doi.org/10.1002/ett.3084">10.1002/ett.3084</a>},
    number={9}, journal={Transactions on Emerging Telecommunications Technologies},
    publisher={Wiley-Blackwell}, author={Karl, Holger and Dräxler, Sevil and Peuster,
    Manuel and Galis, Alex and Bredel, Michael and Ramos, Aurora and Martrat, Josep
    and Siddiqui, Muhammad Shuaib and van Rossem, Steven and Tavernier, Wouter and
    et al.}, year={2016}, pages={1206–1215} }'
  chicago: 'Karl, Holger, Sevil Dräxler, Manuel Peuster, Alex Galis, Michael Bredel,
    Aurora Ramos, Josep Martrat, et al. “DevOps for Network Function Virtualisation:
    An Architectural Approach.” <i>Transactions on Emerging Telecommunications Technologies</i>
    27, no. 9 (2016): 1206–15. <a href="https://doi.org/10.1002/ett.3084">https://doi.org/10.1002/ett.3084</a>.'
  ieee: 'H. Karl <i>et al.</i>, “DevOps for network function virtualisation: an architectural
    approach,” <i>Transactions on Emerging Telecommunications Technologies</i>, vol.
    27, no. 9, pp. 1206–1215, 2016.'
  mla: 'Karl, Holger, et al. “DevOps for Network Function Virtualisation: An Architectural
    Approach.” <i>Transactions on Emerging Telecommunications Technologies</i>, vol.
    27, no. 9, Wiley-Blackwell, 2016, pp. 1206–15, doi:<a href="https://doi.org/10.1002/ett.3084">10.1002/ett.3084</a>.'
  short: H. Karl, S. Dräxler, M. Peuster, A. Galis, M. Bredel, A. Ramos, J. Martrat,
    M.S. Siddiqui, S. van Rossem, W. Tavernier, G. Xilouris, Transactions on Emerging
    Telecommunications Technologies 27 (2016) 1206–1215.
date_created: 2017-11-22T09:32:54Z
date_updated: 2022-01-06T07:03:28Z
department:
- _id: '75'
doi: 10.1002/ett.3084
intvolume: '        27'
issue: '9'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: 'https://doi.org/10.1002/ett.3084 '
oa: '1'
page: 1206-1215
publication: Transactions on Emerging Telecommunications Technologies
publication_identifier:
  issn:
  - 2161-3915
publication_status: published
publisher: Wiley-Blackwell
status: public
title: 'DevOps for network function virtualisation: an architectural approach'
type: journal_article
user_id: '31764'
volume: 27
year: '2016'
...
---
_id: '166'
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 present a YANG model for describing
    the service structure in deployment requests in a flexible way that enables changing
    the order of functions in case the order of traversing them does not affect the
    functionality of the service. Upon receiving such requests, the network orchestration
    system can choose the optimal composition of service components that gives the
    best results for placement of services in the network. This introduces new complexities
    to the placement problem by greatly increasing the number of possible ways a service
    can be composed. In this paper, we describe a heuristic solution that selects
    a Pareto set of the possible compositions of a service as well as possible combinations
    of different services, with respect to different resource requirements of the
    services. Our evaluations show that the selected combinations consist of representative
    samples of possible structures and requirements and therefore, can result in optimal
    or close-to-optimal placement results.
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. Placement of Services with Flexible Structures Specified
    by a YANG Data Model. In: <i>Proceedings of the 2nd International IEEE Conference
    on Network Softwarization (NetSoft)</i>. ; 2016:184--192. doi:<a href="https://doi.org/10.1109/NETSOFT.2016.7502412">10.1109/NETSOFT.2016.7502412</a>'
  apa: Dräxler, S., &#38; Karl, H. (2016). Placement of Services with Flexible Structures
    Specified by a YANG Data Model. In <i>Proceedings of the 2nd International IEEE
    Conference on Network Softwarization (NetSoft)</i> (pp. 184--192). <a href="https://doi.org/10.1109/NETSOFT.2016.7502412">https://doi.org/10.1109/NETSOFT.2016.7502412</a>
  bibtex: '@inproceedings{Dräxler_Karl_2016, title={Placement of Services with Flexible
    Structures Specified by a YANG Data Model}, DOI={<a href="https://doi.org/10.1109/NETSOFT.2016.7502412">10.1109/NETSOFT.2016.7502412</a>},
    booktitle={Proceedings of the 2nd International IEEE Conference on Network Softwarization
    (NetSoft)}, author={Dräxler, Sevil and Karl, Holger}, year={2016}, pages={184--192}
    }'
  chicago: Dräxler, Sevil, and Holger Karl. “Placement of Services with Flexible Structures
    Specified by a YANG Data Model.” In <i>Proceedings of the 2nd International IEEE
    Conference on Network Softwarization (NetSoft)</i>, 184--192, 2016. <a href="https://doi.org/10.1109/NETSOFT.2016.7502412">https://doi.org/10.1109/NETSOFT.2016.7502412</a>.
  ieee: S. Dräxler and H. Karl, “Placement of Services with Flexible Structures Specified
    by a YANG Data Model,” in <i>Proceedings of the 2nd International IEEE Conference
    on Network Softwarization (NetSoft)</i>, 2016, pp. 184--192.
  mla: Dräxler, Sevil, and Holger Karl. “Placement of Services with Flexible Structures
    Specified by a YANG Data Model.” <i>Proceedings of the 2nd International IEEE
    Conference on Network Softwarization (NetSoft)</i>, 2016, pp. 184--192, doi:<a
    href="https://doi.org/10.1109/NETSOFT.2016.7502412">10.1109/NETSOFT.2016.7502412</a>.
  short: 'S. Dräxler, H. Karl, in: Proceedings of the 2nd International IEEE Conference
    on Network Softwarization (NetSoft), 2016, pp. 184--192.'
date_created: 2017-10-17T12:41:24Z
date_updated: 2022-01-06T06:52:53Z
ddc:
- '040'
department:
- _id: '75'
doi: 10.1109/NETSOFT.2016.7502412
file:
- access_level: open_access
  content_type: application/pdf
  creator: sevilmeh
  date_created: 2018-06-25T07:53:54Z
  date_updated: 2018-06-25T07:53:54Z
  file_id: '3322'
  file_name: RIS.pdf
  file_size: 1471937
  relation: main_file
file_date_updated: 2018-06-25T07:53:54Z
has_accepted_license: '1'
main_file_link:
- url: http://ieeexplore.ieee.org/search/searchresult.jsp?newsearch=true&queryText=10.1109%2FNETSOFT.2016.7502412
oa: '1'
page: 184--192
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 2nd International IEEE Conference on Network Softwarization
  (NetSoft)
status: public
title: Placement of Services with Flexible Structures Specified by a YANG Data Model
type: conference
urn: '1665'
user_id: '31764'
year: '2016'
...
---
_id: '749'
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 of Complex Structures in Distributed Service
    Function Chaining Using a YANG Data Model. <i>CoRR</i>. 2015.
  apa: Dräxler, S., &#38; Karl, H. (2015). Specification of Complex Structures in
    Distributed Service Function Chaining Using a YANG Data Model. <i>CoRR</i>.
  bibtex: '@article{Dräxler_Karl_2015, title={Specification of Complex Structures
    in Distributed Service Function Chaining Using a YANG Data Model}, journal={CoRR},
    author={Dräxler, Sevil and Karl, Holger}, year={2015} }'
  chicago: Dräxler, Sevil, and Holger Karl. “Specification of Complex Structures in
    Distributed Service Function Chaining Using a YANG Data Model.” <i>CoRR</i>, 2015.
  ieee: S. Dräxler and H. Karl, “Specification of Complex Structures in Distributed
    Service Function Chaining Using a YANG Data Model,” <i>CoRR</i>. 2015.
  mla: Dräxler, Sevil, and Holger Karl. “Specification of Complex Structures in Distributed
    Service Function Chaining Using a YANG Data Model.” <i>CoRR</i>, 2015.
  short: S. Dräxler, H. Karl, CoRR (2015).
date_created: 2017-11-27T10:22:25Z
date_updated: 2022-01-06T07:03:39Z
department:
- _id: '75'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1503.02442
oa: '1'
publication: CoRR
status: public
title: Specification of Complex Structures in Distributed Service Function Chaining
  Using a YANG Data Model
type: preprint
user_id: '31764'
year: '2015'
...
---
_id: '360'
abstract:
- lang: eng
  text: 'Network appliances perform different functions on network flows and constitute
    an important part of an operator’s network. Normally, a set of chained network
    functions process network flows. Following the trend of virtualization of networks,
    virtualization of the network functions has also become a topic of interest. We
    define a model for formalizing the chaining of network functions using a context-free
    language. We process deployment requests and construct virtual network function
    graphs that can be mapped to the network. We describe the mapping as a Mixed Integer
    Quadratically Constrained Program (MIQCP) for finding the placement of the network
    functions and chaining them together considering the limited network resources
    and requirements of the functions. We have performed a Pareto set analysis to
    investigate the possible trade-offs between different optimization objectives. '
author:
- first_name: Sevil
  full_name: Dräxler, Sevil
  id: '31764'
  last_name: Dräxler
- first_name: Matthias
  full_name: Keller, Matthias
  last_name: Keller
- first_name: Holger
  full_name: Karl, Holger
  id: '126'
  last_name: Karl
citation:
  ama: 'Dräxler S, Keller M, Karl H. Specifying and Placing Chains of Virtual Network
    Functions. In: <i>Proceedings of the 3rd International Conference on Cloud Networking
    (CloudNet)</i>. ; 2014:7-13. doi:<a href="https://doi.org/10.1109/CloudNet.2014.6968961">10.1109/CloudNet.2014.6968961</a>'
  apa: Dräxler, S., Keller, M., &#38; Karl, H. (2014). Specifying and Placing Chains
    of Virtual Network Functions. In <i>Proceedings of the 3rd International Conference
    on Cloud Networking (CloudNet)</i> (pp. 7–13). <a href="https://doi.org/10.1109/CloudNet.2014.6968961">https://doi.org/10.1109/CloudNet.2014.6968961</a>
  bibtex: '@inproceedings{Dräxler_Keller_Karl_2014, title={Specifying and Placing
    Chains of Virtual Network Functions}, DOI={<a href="https://doi.org/10.1109/CloudNet.2014.6968961">10.1109/CloudNet.2014.6968961</a>},
    booktitle={Proceedings of the 3rd International Conference on Cloud Networking
    (CloudNet)}, author={Dräxler, Sevil and Keller, Matthias and Karl, Holger}, year={2014},
    pages={7–13} }'
  chicago: Dräxler, Sevil, Matthias Keller, and Holger Karl. “Specifying and Placing
    Chains of Virtual Network Functions.” In <i>Proceedings of the 3rd International
    Conference on Cloud Networking (CloudNet)</i>, 7–13, 2014. <a href="https://doi.org/10.1109/CloudNet.2014.6968961">https://doi.org/10.1109/CloudNet.2014.6968961</a>.
  ieee: S. Dräxler, M. Keller, and H. Karl, “Specifying and Placing Chains of Virtual
    Network Functions,” in <i>Proceedings of the 3rd International Conference on Cloud
    Networking (CloudNet)</i>, 2014, pp. 7–13.
  mla: Dräxler, Sevil, et al. “Specifying and Placing Chains of Virtual Network Functions.”
    <i>Proceedings of the 3rd International Conference on Cloud Networking (CloudNet)</i>,
    2014, pp. 7–13, doi:<a href="https://doi.org/10.1109/CloudNet.2014.6968961">10.1109/CloudNet.2014.6968961</a>.
  short: 'S. Dräxler, M. Keller, H. Karl, in: Proceedings of the 3rd International
    Conference on Cloud Networking (CloudNet), 2014, pp. 7–13.'
date_created: 2017-10-17T12:42:02Z
date_updated: 2022-01-06T06:59:27Z
ddc:
- '040'
department:
- _id: '75'
doi: 10.1109/CloudNet.2014.6968961
file:
- access_level: open_access
  content_type: application/pdf
  creator: florida
  date_created: 2018-03-20T07:21:01Z
  date_updated: 2018-06-25T08:08:44Z
  file_id: '1409'
  file_name: 360-Mehr1410_Specifying_preprint_01.pdf
  file_size: 422019
  relation: main_file
file_date_updated: 2018-06-25T08:08:44Z
has_accepted_license: '1'
oa: '1'
page: 7-13
project:
- _id: '1'
  name: SFB 901
- _id: '6'
  name: SFB 901 - Subprojekt A2
- _id: '2'
  name: SFB 901 - Project Area A
publication: Proceedings of the 3rd International Conference on Cloud Networking (CloudNet)
status: public
title: Specifying and Placing Chains of Virtual Network Functions
type: conference
urn: '3601'
user_id: '31764'
year: '2014'
...
---
_id: '461'
author:
- first_name: Sevil
  full_name: Dräxler, Sevil
  id: '31764'
  last_name: Dräxler
citation:
  ama: Dräxler S. <i>Adaptive Placement of Programmable Virtual Network Function Chains</i>.
    Universität Paderborn; 2014.
  apa: Dräxler, S. (2014). <i>Adaptive Placement of Programmable Virtual Network Function
    Chains</i>. Universität Paderborn.
  bibtex: '@book{Dräxler_2014, title={Adaptive Placement of Programmable Virtual Network
    Function Chains}, publisher={Universität Paderborn}, author={Dräxler, Sevil},
    year={2014} }'
  chicago: Dräxler, Sevil. <i>Adaptive Placement of Programmable Virtual Network Function
    Chains</i>. Universität Paderborn, 2014.
  ieee: S. Dräxler, <i>Adaptive Placement of Programmable Virtual Network Function
    Chains</i>. Universität Paderborn, 2014.
  mla: Dräxler, Sevil. <i>Adaptive Placement of Programmable Virtual Network Function
    Chains</i>. Universität Paderborn, 2014.
  short: S. Dräxler, Adaptive Placement of Programmable Virtual Network Function Chains,
    Universität Paderborn, 2014.
date_created: 2017-10-17T12:42:21Z
date_updated: 2022-01-06T07:01:14Z
department:
- _id: '75'
project:
- _id: '1'
  name: SFB 901
- _id: '6'
  name: SFB 901 - Subprojekt A2
- _id: '2'
  name: SFB 901 - Project Area A
publisher: Universität Paderborn
status: public
title: Adaptive Placement of Programmable Virtual Network Function Chains
type: bachelorsthesis
user_id: '477'
year: '2014'
...
