---
_id: '8795'
abstract:
- lang: eng
  text: "Softwarized networks are the key enabler for elastic, on-demand service deployments
    of virtualized network functions. They allow to dynamically steer traffic\r\nthrough
    the network when new network functions are instantiated, or old ones\r\nare terminated.
    These scenarios become in particular challenging when stateful functions are involved,
    necessitating state management solutions to migrate\r\nstate between the functions.
    The problem with existing solutions is that they typically embrace state migration
    and flow rerouting jointly, imposing a huge set\r\nof requirements on the on-boarded
    virtualized network functions (VNFs), eg,\r\nsolution-specific state management
    interfaces.\r\nTo change this, we introduce the seamless handover protocol (SHarP).
    An\r\neasy-to-use, loss-less, and order-preserving flow rerouting mechanism that
    is\r\nnot fixed to a single state management approach. Using SHarP, VNF vendors\r\nare
    empowered to implement or use the state management solution of their\r\nchoice.
    SHarP supports these solutions with additional information when flows\r\nare migrated.
    In this paper, we present SHarP's design, its open source prototype\r\nimplementation,
    and show how SHarP significantly reduces the buffer usage at\r\na central (SDN)
    controller, which is a typical bottleneck in state-of-the-art solutions. Our experiments
    show that SHarP uses a constant amount of controller\r\nbuffer, irrespective of
    the time taken to migrate the VNF state."
article_number: e2067
author:
- first_name: Manuel
  full_name: Peuster, Manuel
  id: '13271'
  last_name: Peuster
- first_name: Hannes
  full_name: Küttner, Hannes
  last_name: Küttner
- first_name: Holger
  full_name: Karl, Holger
  id: '126'
  last_name: Karl
citation:
  ama: Peuster M, Küttner H, Karl H. A flow handover protocol to support state migration
    in softwarized networks. <i>International Journal of Network Management</i>. 2019.
    doi:<a href="https://doi.org/10.1002/nem.2067">10.1002/nem.2067</a>
  apa: Peuster, M., Küttner, H., &#38; Karl, H. (2019). A flow handover protocol to
    support state migration in softwarized networks. <i>International Journal of Network
    Management</i>. <a href="https://doi.org/10.1002/nem.2067">https://doi.org/10.1002/nem.2067</a>
  bibtex: '@article{Peuster_Küttner_Karl_2019, title={A flow handover protocol to
    support state migration in softwarized networks}, DOI={<a href="https://doi.org/10.1002/nem.2067">10.1002/nem.2067</a>},
    number={e2067}, journal={International Journal of Network Management}, author={Peuster,
    Manuel and Küttner, Hannes and Karl, Holger}, year={2019} }'
  chicago: Peuster, Manuel, Hannes Küttner, and Holger Karl. “A Flow Handover Protocol
    to Support State Migration in Softwarized Networks.” <i>International Journal
    of Network Management</i>, 2019. <a href="https://doi.org/10.1002/nem.2067">https://doi.org/10.1002/nem.2067</a>.
  ieee: M. Peuster, H. Küttner, and H. Karl, “A flow handover protocol to support
    state migration in softwarized networks,” <i>International Journal of Network
    Management</i>, 2019.
  mla: Peuster, Manuel, et al. “A Flow Handover Protocol to Support State Migration
    in Softwarized Networks.” <i>International Journal of Network Management</i>,
    e2067, 2019, doi:<a href="https://doi.org/10.1002/nem.2067">10.1002/nem.2067</a>.
  short: M. Peuster, H. Küttner, H. Karl, International Journal of Network Management
    (2019).
date_created: 2019-04-01T17:47:36Z
date_updated: 2022-01-06T07:04:01Z
ddc:
- '000'
department:
- _id: '75'
doi: 10.1002/nem.2067
file:
- access_level: open_access
  content_type: application/pdf
  creator: peuster
  date_created: 2019-04-01T18:04:14Z
  date_updated: 2019-04-01T18:04:14Z
  file_id: '8796'
  file_name: main_for_ris.pdf
  file_size: 2571927
  relation: main_file
file_date_updated: 2019-04-01T18:04:14Z
has_accepted_license: '1'
language:
- iso: eng
main_file_link:
- url: https://onlinelibrary.wiley.com/doi/abs/10.1002/nem.2067
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: International Journal of Network Management
publication_identifier:
  issn:
  - 1055-7148
  - 1099-1190
publication_status: published
status: public
title: A flow handover protocol to support state migration in softwarized networks
type: journal_article
user_id: '13271'
year: '2019'
...