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Title: WLCG and IPv6 - The HEPiX IPv6 working group

The HEPiX ( IPv6 Working Group has been investigating the many issues which feed into the decision on the timetable for the use of IPv6 ( networking protocols in High Energy Physics (HEP) Computing, in particular in the Worldwide Large Hadron Collider (LHC) Computing Grid (WLCG). RIPE NCC, the European Regional Internet Registry (RIR), ran out ofIPv4 addresses in September 2012. The North and South America RIRs are expected to run out soon. In recent months it has become more clear that some WLCG sites, including CERN, are running short of IPv4 address space, now without the possibility of applying for more. This has increased the urgency for the switch-on of dual-stack IPv4/IPv6 on all outward facing WLCG services to allow for the eventual support of IPv6-only clients. The activities of the group include the analysis and testing of the readiness for IPv6 and the performance of many required components, including the applications, middleware, management and monitoring tools essential for HEP computing. Many WLCG Tier 1/2 sites are participants in the group's distributed IPv6 testbed and the major LHC experiment collaborations are engaged in the testing. We are constructing a group web/wiki which will contain useful information on the IPv6more » readiness of the various software components and a knowledge base ( Furthermore, this paper describes the work done by the working group and its future plans.« less
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  1. CERN, Geneve (Switzerland)
  2. Institute of High Energy Physics, Beijing (China)
  3. Academy of Sciences of the Czech Republic Na Slovance, Prague (Czech Republic)
  4. The Univ. of Edinburgh, Edinburgh (United Kingdom)
  5. Imperial College London, London (United Kingdom)
  6. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  7. Karlsruher Institut fur Technologie, Eggenstein-Leopoldshafen (Germany)
  8. STFC Rutherford Appleton Lab., Oxfordshire (United Kingdom)
  9. Port d'Informacio Cientifica, Bellaterra (Spain)
  10. Univ. of Glasgow, Glasgow (United Kingdom)
  11. INFN, Sezione di Milano, Milano (Italy)
  12. Consortium GARR, Roma (Italy)
  13. California Inst. of Technology (CalTech), Pasadena, CA (United States)
  14. Queen Mary Univ. of London, London (United Kingdom)
  15. Princeton Univ., Princeton, NJ (United States)
Publication Date:
Report Number(s):
Journal ID: ISSN 1742-6588; 1302185
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Journal of Physics. Conference Series
Additional Journal Information:
Journal Volume: 513; Journal Issue: 6; Journal ID: ISSN 1742-6588
IOP Publishing
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States
OSTI Identifier: