From IPv4 to eternity - the High Energy Physics transition to IPv6

The much-heralded exhaustion of the IPv4 networking address space has finally started, but there is still a well-known lack of communities and institutes using IPv6. Why is this? Many of the individual components of distributed applications have already been reported to be IPv6-ready, but to ensure a smooth transition by a particular user community a full-systems analysis is required. This is a far more complicated endeavour. The High Energy Physics (HEP) IPv6 Working Group has been investigating the many issues feeding into the transition to the use of IPv6 on the Worldwide Large Hadron Collider Grid. The activities include the analysis and testing of the readiness for IPv6 and performance of the many different components essential for HEP computing and planning for the impact on operations and security. The lessons we have learned along the way are not specific to HEP and will be useful to other application communities.



  • Marek Elias and Tomas Kouba (FZU, CZ)
  • Thomas Finnern and Kars Ohrenberg (DESY, DE)
  • Lars Fischer (NORDUnet, DK)
  • Bruno Hoeft (KIT, DE)
  • David Kelsey (STFC, UK)
  • Simon Leinen (SWITCH, CH)
  • Edoardo Martelli and Andreas Pfeiffer (CERN, CH)
  • Mark Mitchell (Glasgow, UK)
  • Francesco Prelz (INFN, IT)
  • Mario Reale (GARR, IT)
  • Sandor Rozsa and Ramiro Voicu (Caltech, USA)
  • Ronald van der Pol (SARA, NL)
  • Mattias Wadenstein (Umea, SE)
  • Tony Wildish (Princeton, USA)

Part of session

Networking for apps

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