---
_id: '3287'
abstract:
- lang: eng
  text: "For optimal placement and orchestration of network services, it is crucial\r\nthat
    their structure and semantics are specified clearly and comprehensively\r\nand
    are available to an orchestrator. Existing specification approaches are\r\neither
    ambiguous or miss important aspects regarding the behavior of virtual\r\nnetwork
    functions (VNFs) forming a service. We propose to formally and\r\nunambiguously
    specify the behavior of these functions and services using\r\nQueuing Petri Nets
    (QPNs). QPNs are an established method that allows to\r\nexpress queuing, synchronization,
    stochastically distributed processing delays,\r\nand changing traffic volume and
    characteristics at each VNF. With QPNs,\r\nmultiple VNFs can be connected to complete
    network services in any structure,\r\neven specifying bidirectional network services
    containing loops.\r\n  We discuss how management and orchestration systems can
    benefit from our\r\nclear and comprehensive specification approach, leading to
    better placement of\r\nVNFs and improved Quality of Service. Another benefit of
    formally specifying\r\nnetwork services with QPNs are diverse analysis options,
    which allow valuable\r\ninsights such as the distribution of end-to-end delay.
    We propose a tool-based\r\nworkflow that supports the specification of network
    services and the automatic\r\ngeneration of corresponding simulation code to enable
    an in-depth analysis of\r\ntheir behavior and performance."
author:
- first_name: Stefan Balthasar
  full_name: Schneider, Stefan Balthasar
  id: '35343'
  last_name: Schneider
  orcid: 0000-0001-8210-4011
- first_name: Arnab
  full_name: Sharma, Arnab
  id: '67200'
  last_name: Sharma
- first_name: Holger
  full_name: Karl, Holger
  id: '126'
  last_name: Karl
- first_name: Heike
  full_name: Wehrheim, Heike
  id: '573'
  last_name: Wehrheim
citation:
  ama: 'Schneider SB, Sharma A, Karl H, Wehrheim H. Specifying and Analyzing Virtual
    Network Services Using Queuing Petri Nets. In: <i>2019 IFIP/IEEE International
    Symposium on Integrated Network Management (IM)</i>. Washington, DC, USA: IFIP;
    2019:116--124.'
  apa: 'Schneider, S. B., Sharma, A., Karl, H., &#38; Wehrheim, H. (2019). Specifying
    and Analyzing Virtual Network Services Using Queuing Petri Nets. In <i>2019 IFIP/IEEE
    International Symposium on Integrated Network Management (IM)</i> (pp. 116--124).
    Washington, DC, USA: IFIP.'
  bibtex: '@inproceedings{Schneider_Sharma_Karl_Wehrheim_2019, place={Washington,
    DC, USA}, title={Specifying and Analyzing Virtual Network Services Using Queuing
    Petri Nets}, booktitle={2019 IFIP/IEEE International Symposium on Integrated Network
    Management (IM)}, publisher={IFIP}, author={Schneider, Stefan Balthasar and Sharma,
    Arnab and Karl, Holger and Wehrheim, Heike}, year={2019}, pages={116--124} }'
  chicago: 'Schneider, Stefan Balthasar, Arnab Sharma, Holger Karl, and Heike Wehrheim.
    “Specifying and Analyzing Virtual Network Services Using Queuing Petri Nets.”
    In <i>2019 IFIP/IEEE International Symposium on Integrated Network Management
    (IM)</i>, 116--124. Washington, DC, USA: IFIP, 2019.'
  ieee: S. B. Schneider, A. Sharma, H. Karl, and H. Wehrheim, “Specifying and Analyzing
    Virtual Network Services Using Queuing Petri Nets,” in <i>2019 IFIP/IEEE International
    Symposium on Integrated Network Management (IM)</i>, Washington, DC, USA, 2019,
    pp. 116--124.
  mla: Schneider, Stefan Balthasar, et al. “Specifying and Analyzing Virtual Network
    Services Using Queuing Petri Nets.” <i>2019 IFIP/IEEE International Symposium
    on Integrated Network Management (IM)</i>, IFIP, 2019, pp. 116--124.
  short: 'S.B. Schneider, A. Sharma, H. Karl, H. Wehrheim, in: 2019 IFIP/IEEE International
    Symposium on Integrated Network Management (IM), IFIP, Washington, DC, USA, 2019,
    pp. 116--124.'
conference:
  end_date: 2019-04-12
  location: Washington, DC, USA
  name: 2019 IFIP/IEEE International Symposium on Integrated Network Management (IM)
  start_date: 2019-04-08
date_created: 2018-06-18T15:23:18Z
date_updated: 2022-01-06T06:59:09Z
ddc:
- '040'
department:
- _id: '77'
- _id: '75'
file:
- access_level: open_access
  content_type: application/pdf
  creator: stschn
  date_created: 2019-01-07T12:38:35Z
  date_updated: 2019-01-07T12:38:35Z
  file_id: '6504'
  file_name: ris_preprint.pdf
  file_size: 497528
  relation: main_file
file_date_updated: 2019-01-07T12:38:35Z
has_accepted_license: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://dl.ifip.org/db/conf/im/im2019/188490.pdf
oa: '1'
page: 116--124
place: Washington, DC, USA
project:
- _id: '3'
  name: SFB 901 - Project Area B
- _id: '11'
  name: SFB 901 - Subproject B3
- _id: '1'
  name: SFB 901
- _id: '4'
  name: SFB 901 - Project Area C
- _id: '16'
  name: SFB 901 - Subproject C4
- _id: '28'
  grant_number: '761493'
  name: 5G Development and validation platform for global industry-specific network
    services and Apps
- _id: '25'
  call_identifier: 5G PPP Phase 1
  grant_number: '671517'
  name: 'SONATA NFV: Agile Service Development and Orchestration in 5G Virtualized
    Networks'
publication: 2019 IFIP/IEEE International Symposium on Integrated Network Management
  (IM)
publisher: IFIP
status: public
title: Specifying and Analyzing Virtual Network Services Using Queuing Petri Nets
type: conference
user_id: '35343'
year: '2019'
...
---
_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: '981'
abstract:
- lang: eng
  text: "Benchmarking and profiling virtual network functions (VNFs) generates input\r\nknowledge
    for resource management decisions taken by \r\nmanagement and orchestration systems.
    \r\nSuch VNFs are usually not executed in isolation but are often deployed as
    part of a service function chain (SFC) that connects single functions into complex
    \r\nstructures. To manage such chains, isolated performance\r\nprofiles of single
    functions have to be combined to get insights into \r\nthe overall behavior of
    an SFC. This becomes particularly\r\nchallenging in highly agile DevOps environments
    in which profiling\r\nprocesses need to be fully automated and detailed insights
    about a chain's\r\ninternal structures are not always available. \r\n\r\nIn this
    paper, we introduce a\r\nfully automatable, flexible, and platform-agnostic profiling\r\nsystem
    that allows to profile entire SFCs at once. This obviates \r\nmanual modeling
    procedures to combine profiling results from single\r\nVNFs to reflect SFC performance.
    \r\nWe use a case study with different SFC configurations to show that it\r\nis
    hard to model the resulting SFC performance based on single-VNF measurements and
    that\r\nperformance interactions between real, non-trivial functions that are
    deployed in a\r\nchain exist.  "
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. Profile Your Chains, Not Functions. Automated Network Service
    Profiling in DevOps Environments. In: <i>IEEE Conference on Network Function Virtualisation
    and Software Defined Networks (NFV-SDN)</i>. Berlin; 2017. doi:<a href="https://doi.org/10.1109/NFV-SDN.2017.8169826">10.1109/NFV-SDN.2017.8169826</a>'
  apa: Peuster, M., &#38; Karl, H. (2017). Profile Your Chains, Not Functions. Automated
    Network Service Profiling in DevOps Environments. In <i>IEEE Conference on Network
    Function Virtualisation and Software Defined Networks (NFV-SDN)</i>. Berlin. <a
    href="https://doi.org/10.1109/NFV-SDN.2017.8169826">https://doi.org/10.1109/NFV-SDN.2017.8169826</a>
  bibtex: '@inproceedings{Peuster_Karl_2017, place={Berlin}, title={Profile Your Chains,
    Not Functions. Automated Network Service Profiling in DevOps Environments}, DOI={<a
    href="https://doi.org/10.1109/NFV-SDN.2017.8169826">10.1109/NFV-SDN.2017.8169826</a>},
    booktitle={IEEE Conference on Network Function Virtualisation and Software Defined
    Networks (NFV-SDN)}, author={Peuster, Manuel and Karl, Holger}, year={2017} }'
  chicago: Peuster, Manuel, and Holger Karl. “Profile Your Chains, Not Functions.
    Automated Network Service Profiling in DevOps Environments.” In <i>IEEE Conference
    on Network Function Virtualisation and Software Defined Networks (NFV-SDN)</i>.
    Berlin, 2017. <a href="https://doi.org/10.1109/NFV-SDN.2017.8169826">https://doi.org/10.1109/NFV-SDN.2017.8169826</a>.
  ieee: M. Peuster and H. Karl, “Profile Your Chains, Not Functions. Automated Network
    Service Profiling in DevOps Environments,” in <i>IEEE Conference on Network Function
    Virtualisation and Software Defined Networks (NFV-SDN)</i>, Berlin, 2017.
  mla: Peuster, Manuel, and Holger Karl. “Profile Your Chains, Not Functions. Automated
    Network Service Profiling in DevOps Environments.” <i>IEEE Conference on Network
    Function Virtualisation and Software Defined Networks (NFV-SDN)</i>, 2017, doi:<a
    href="https://doi.org/10.1109/NFV-SDN.2017.8169826">10.1109/NFV-SDN.2017.8169826</a>.
  short: 'M. Peuster, H. Karl, in: IEEE Conference on Network Function Virtualisation
    and Software Defined Networks (NFV-SDN), Berlin, 2017.'
conference:
  location: Berlin
  name: IEEE Conference on Network Function Virtualisation and Software Defined Networks
    (NFV-SDN)
date_created: 2017-11-27T10:22:29Z
date_updated: 2022-01-06T07:04:22Z
ddc:
- '004'
department:
- _id: '75'
doi: 10.1109/NFV-SDN.2017.8169826
file:
- access_level: open_access
  content_type: application/pdf
  creator: peuster
  date_created: 2018-07-05T11:14:00Z
  date_updated: 2018-07-05T11:14:00Z
  file_id: '3431'
  file_name: main_ris.pdf
  file_size: 2642306
  relation: main_file
file_date_updated: 2018-07-05T11:14:00Z
has_accepted_license: '1'
language:
- iso: eng
oa: '1'
place: Berlin
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: IEEE Conference on Network Function Virtualisation and Software Defined
  Networks (NFV-SDN)
publication_status: published
status: public
title: Profile Your Chains, Not Functions. Automated Network Service Profiling in
  DevOps Environments
type: conference
urn: '9810'
user_id: '13271'
year: '2017'
...
---
_id: '730'
abstract:
- lang: eng
  text: "Allocating resources to virtualized network functions and services to meet
    service level agreements is a challenging task for NFV management and orchestration
    systems. This becomes even more challenging when agile development methodologies,
    like DevOps, are applied. In such scenarios, management and orchestration systems
    are continuously facing new versions of functions and services which makes it
    hard to decide how much resources have to be allocated to them to provide the
    expected service performance. \r\nOne solution for this problem is to support
    resource allocation decisions with performance behavior information obtained by
    profiling techniques applied to such network functions and services.\r\n\r\nIn
    this position paper, we analyze and discuss the components needed to generate
    such performance behavior information within the NFV DevOps workflow. We also
    outline research questions that identify open issues and missing pieces for a
    fully integrated NFV profiling solution. Further, we introduce a novel profiling
    mechanism that is able to profile virtualized network functions and entire network
    service chains under different resource constraints before they are deployed on
    production infrastructure."
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: Towards Performance Profile-Based
    Network Service Management. In: <i>Fifth European Workshop on Software-Defined
    Networks, EWSDN 2016, Den Haag, The Netherlands, October 10-11, 2016</i>. ; 2016:7--12.
    doi:<a href="https://doi.org/10.1109/EWSDN.2016.9">10.1109/EWSDN.2016.9</a>'
  apa: 'Peuster, M., &#38; Karl, H. (2016). Understand Your Chains: Towards Performance
    Profile-Based Network Service Management. In <i>Fifth European Workshop on Software-Defined
    Networks, EWSDN 2016, Den Haag, The Netherlands, October 10-11, 2016</i> (pp.
    7--12). Den Haag. <a href="https://doi.org/10.1109/EWSDN.2016.9">https://doi.org/10.1109/EWSDN.2016.9</a>'
  bibtex: '@inproceedings{Peuster_Karl_2016, title={Understand Your Chains: Towards
    Performance Profile-Based Network Service Management}, DOI={<a href="https://doi.org/10.1109/EWSDN.2016.9">10.1109/EWSDN.2016.9</a>},
    booktitle={Fifth European Workshop on Software-Defined Networks, EWSDN 2016, Den
    Haag, The Netherlands, October 10-11, 2016}, author={Peuster, Manuel and Karl,
    Holger}, year={2016}, pages={7--12} }'
  chicago: 'Peuster, Manuel, and Holger Karl. “Understand Your Chains: Towards Performance
    Profile-Based Network Service Management.” In <i>Fifth European Workshop on Software-Defined
    Networks, EWSDN 2016, Den Haag, The Netherlands, October 10-11, 2016</i>, 7--12,
    2016. <a href="https://doi.org/10.1109/EWSDN.2016.9">https://doi.org/10.1109/EWSDN.2016.9</a>.'
  ieee: 'M. Peuster and H. Karl, “Understand Your Chains: Towards Performance Profile-Based
    Network Service Management,” in <i>Fifth European Workshop on Software-Defined
    Networks, EWSDN 2016, Den Haag, The Netherlands, October 10-11, 2016</i>, Den
    Haag, 2016, pp. 7--12.'
  mla: 'Peuster, Manuel, and Holger Karl. “Understand Your Chains: Towards Performance
    Profile-Based Network Service Management.” <i>Fifth European Workshop on Software-Defined
    Networks, EWSDN 2016, Den Haag, The Netherlands, October 10-11, 2016</i>, 2016,
    pp. 7--12, doi:<a href="https://doi.org/10.1109/EWSDN.2016.9">10.1109/EWSDN.2016.9</a>.'
  short: 'M. Peuster, H. Karl, in: Fifth European Workshop on Software-Defined Networks,
    EWSDN 2016, Den Haag, The Netherlands, October 10-11, 2016, 2016, pp. 7--12.'
conference:
  location: Den Haag
  name: Fifth European Workshop on Software-Defined Networks (EWSDN
date_created: 2017-11-27T10:22:25Z
date_updated: 2022-01-06T07:03:33Z
ddc:
- '000'
department:
- _id: '75'
doi: 10.1109/EWSDN.2016.9
file:
- access_level: open_access
  content_type: application/pdf
  creator: peuster
  date_created: 2018-06-25T13:10:10Z
  date_updated: 2018-06-25T13:16:56Z
  file_id: '3353'
  file_name: main_ris.pdf
  file_size: 966702
  relation: main_file
file_date_updated: 2018-06-25T13:16:56Z
has_accepted_license: '1'
language:
- iso: eng
main_file_link:
- url: http://ieeexplore.ieee.org/document/7956044/
oa: '1'
page: 7--12
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: Fifth European Workshop on Software-Defined Networks, EWSDN 2016, Den
  Haag, The Netherlands, October 10-11, 2016
publication_status: published
status: public
title: 'Understand Your Chains: Towards Performance Profile-Based Network Service
  Management'
type: conference
urn: '7309'
user_id: '13271'
year: '2016'
...
---
_id: '738'
abstract:
- lang: eng
  text: "Virtualized network services consisting of multiple individual network functions
    are already today deployed across multiple sites, so called multi-PoP (points
    of presence) environments. This allows to improve service performance by optimizing
    its placement in the network. But prototyping and testing of these complex distributed
    software systems becomes extremely challenging. The reason is that not only the
    network service as such has to be tested but also its integration with management
    and orchestration systems. Existing solutions, like simulators, basic network
    emulators, or local cloud testbeds, do not support all aspects of these tasks.\r\n\r\nTo
    this end, we introduce MeDICINE, a novel NFV prototyping platform that is able
    to execute production-ready network functions, provided as software containers,
    in an emulated multi-PoP environment. These network functions can be controlled
    by any third-party management and orchestration system that connects to our platform
    through standard interfaces. Based on this, a developer can use our platform to
    prototype and test complex network services in a realistic environment running
    on his laptop.\r\n"
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
- first_name: Steven
  full_name: van Rossem, Steven
  last_name: van Rossem
citation:
  ama: 'Peuster M, Karl H, van Rossem S. MeDICINE: Rapid Prototyping of Production-Ready
    Network Services in Multi-PoP Environments. In: <i>IEEE Conference on Network
    Function Virtualization and Software Defined Networks (NFV-SDN)</i>. ; 2016. doi:<a
    href="https://doi.org/10.1109/NFV-SDN.2016.7919490">10.1109/NFV-SDN.2016.7919490</a>'
  apa: 'Peuster, M., Karl, H., &#38; van Rossem, S. (2016). MeDICINE: Rapid Prototyping
    of Production-Ready Network Services in Multi-PoP Environments. In <i>IEEE Conference
    on Network Function Virtualization and Software Defined Networks (NFV-SDN)</i>.
    Palo Alto. <a href="https://doi.org/10.1109/NFV-SDN.2016.7919490">https://doi.org/10.1109/NFV-SDN.2016.7919490</a>'
  bibtex: '@inproceedings{Peuster_Karl_van Rossem_2016, title={MeDICINE: Rapid Prototyping
    of Production-Ready Network Services in Multi-PoP Environments}, DOI={<a href="https://doi.org/10.1109/NFV-SDN.2016.7919490">10.1109/NFV-SDN.2016.7919490</a>},
    booktitle={IEEE Conference on Network Function Virtualization and Software Defined
    Networks (NFV-SDN)}, author={Peuster, Manuel and Karl, Holger and van Rossem,
    Steven}, year={2016} }'
  chicago: 'Peuster, Manuel, Holger Karl, and Steven van Rossem. “MeDICINE: Rapid
    Prototyping of Production-Ready Network Services in Multi-PoP Environments.” In
    <i>IEEE Conference on Network Function Virtualization and Software Defined Networks
    (NFV-SDN)</i>, 2016. <a href="https://doi.org/10.1109/NFV-SDN.2016.7919490">https://doi.org/10.1109/NFV-SDN.2016.7919490</a>.'
  ieee: 'M. Peuster, H. Karl, and S. van Rossem, “MeDICINE: Rapid Prototyping of Production-Ready
    Network Services in Multi-PoP Environments,” in <i>IEEE Conference on Network
    Function Virtualization and Software Defined Networks (NFV-SDN)</i>, Palo Alto,
    2016.'
  mla: 'Peuster, Manuel, et al. “MeDICINE: Rapid Prototyping of Production-Ready Network
    Services in Multi-PoP Environments.” <i>IEEE Conference on Network Function Virtualization
    and Software Defined Networks (NFV-SDN)</i>, 2016, doi:<a href="https://doi.org/10.1109/NFV-SDN.2016.7919490">10.1109/NFV-SDN.2016.7919490</a>.'
  short: 'M. Peuster, H. Karl, S. van Rossem, in: IEEE Conference on Network Function
    Virtualization and Software Defined Networks (NFV-SDN), 2016.'
conference:
  location: Palo Alto
  name: IEEE Conference on Network Function Virtualization and Software Defined Networks
    (NFV-SDN)
date_created: 2017-11-27T10:22:25Z
date_updated: 2022-01-06T07:03:36Z
ddc:
- '000'
department:
- _id: '75'
doi: 10.1109/NFV-SDN.2016.7919490
file:
- access_level: open_access
  content_type: application/pdf
  creator: peuster
  date_created: 2018-06-25T13:06:47Z
  date_updated: 2018-06-25T13:17:34Z
  file_id: '3349'
  file_name: main_ris.pdf
  file_size: 848438
  relation: main_file
file_date_updated: 2018-06-25T13:17:34Z
has_accepted_license: '1'
language:
- iso: eng
main_file_link:
- url: https://arxiv.org/pdf/1606.05995.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: IEEE Conference on Network Function Virtualization and Software Defined
  Networks (NFV-SDN)
publication_status: published
status: public
title: 'MeDICINE: Rapid Prototyping of Production-Ready Network Services in Multi-PoP
  Environments'
type: conference
urn: '7384'
user_id: '13271'
year: '2016'
...
---
_id: '985'
accept: '1'
author:
- first_name: S.
  full_name: v. Rossem, S.
  last_name: v. Rossem
- first_name: W.
  full_name: Tavernier, W.
  last_name: Tavernier
- first_name: Manuel
  full_name: Peuster, Manuel
  id: '13271'
  last_name: Peuster
- first_name: D.
  full_name: Colle, D.
  last_name: Colle
- first_name: M.
  full_name: Pickavet, M.
  last_name: Pickavet
- first_name: P.
  full_name: Demeester, P.
  last_name: Demeester
citation:
  ama: 'v. Rossem S, Tavernier W, Peuster M, Colle D, Pickavet M, Demeester P. Monitoring
    and debugging using an SDK for NFV-powered telecom applications. In: <i>Proc.
    IEEE Conference on Network Function Virtualization and Software Defined Network
    (NFV-SDN), Demo Track</i>. ; 2016.'
  apa: v. Rossem, S., Tavernier, W., Peuster, M., Colle, D., Pickavet, M., &#38; Demeester,
    P. (2016). Monitoring and debugging using an SDK for NFV-powered telecom applications.
    In <i>Proc. IEEE Conference on Network Function Virtualization and Software Defined
    Network (NFV-SDN), Demo Track</i>.
  bibtex: '@inproceedings{v. Rossem_Tavernier_Peuster_Colle_Pickavet_Demeester_2016,
    title={Monitoring and debugging using an SDK for NFV-powered telecom applications},
    booktitle={Proc. IEEE Conference on Network Function Virtualization and Software
    Defined Network (NFV-SDN), Demo Track}, author={v. Rossem, S. and Tavernier, W.
    and Peuster, Manuel and Colle, D. and Pickavet, M. and Demeester, P.}, year={2016}
    }'
  chicago: Rossem, S. v., W. Tavernier, Manuel Peuster, D. Colle, M. Pickavet, and
    P. Demeester. “Monitoring and Debugging Using an SDK for NFV-Powered Telecom Applications.”
    In <i>Proc. IEEE Conference on Network Function Virtualization and Software Defined
    Network (NFV-SDN), Demo Track</i>, 2016.
  ieee: S. v. Rossem, W. Tavernier, M. Peuster, D. Colle, M. Pickavet, and P. Demeester,
    “Monitoring and debugging using an SDK for NFV-powered telecom applications,”
    in <i>Proc. IEEE Conference on Network Function Virtualization and Software Defined
    Network (NFV-SDN), Demo Track</i>, 2016.
  mla: v. Rossem, S., et al. “Monitoring and Debugging Using an SDK for NFV-Powered
    Telecom Applications.” <i>Proc. IEEE Conference on Network Function Virtualization
    and Software Defined Network (NFV-SDN), Demo Track</i>, 2016.
  short: 'S. v. Rossem, W. Tavernier, M. Peuster, D. Colle, M. Pickavet, P. Demeester,
    in: Proc. IEEE Conference on Network Function Virtualization and Software Defined
    Network (NFV-SDN), Demo Track, 2016.'
date_created: 2017-11-27T10:22:29Z
date_updated: 2019-01-03T13:18:55Z
ddc:
- '004'
department:
- _id: '75'
file:
- access_level: closed
  content_type: application/pdf
  creator: tabu
  date_created: 2017-12-21T12:16:53Z
  date_updated: 2017-12-21T12:16:53Z
  file_id: '1084'
  file_name: 8521284.pdf
  file_size: 305293
  open_access: 1
  relation: main_file
  success: 1
file_date_updated: 2017-12-21T12:16:53Z
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: Proc. IEEE Conference on Network Function Virtualization and Software
  Defined Network (NFV-SDN), Demo Track
status: public
title: Monitoring and debugging using an SDK for NFV-powered telecom applications
type: conference
user_id: '126'
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
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title: Placement of Services with Flexible Structures Specified by a YANG Data Model
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