Towards a NetFlow Implementation for OpenFlow Software-Defined Networks

@article{SurezVarela2017TowardsAN,
  title={Towards a NetFlow Implementation for OpenFlow Software-Defined Networks},
  author={Jos{\'e} Su{\'a}rez-Varela and Pere Barlet-Ros},
  journal={2017 29th International Teletraffic Congress (ITC 29)},
  year={2017},
  volume={1},
  pages={187-195}
}
Obtaining flow-level measurements, similar to those provided by Netflow/IPFIX, with OpenFlow is challenging as it requires the installation of an entry per flow in the flow tables. This approach does not scale well with the number of concurrent flows in the traffic as the number of entries in the flow tables is limited and small. Flow monitoring rules may also interfere with forwarding or other rules already present in the switches, which are often defined at different granularities than the… CONTINUE READING

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