| Issue |
EPJ Web of Conf.
Volume 295, 2024
26th International Conference on Computing in High Energy and Nuclear Physics (CHEP 2023)
|
|
|---|---|---|
| Article Number | 07036 | |
| Number of page(s) | 9 | |
| Section | Facilities and Virtualization | |
| DOI | https://doi.org/10.1051/epjconf/202429507036 | |
| Published online | 06 May 2024 | |
https://doi.org/10.1051/epjconf/202429507036
Overcoming obstacles to IPv6 on WLCG
1 European Organization for Nuclear Research (CERN), CH-1211 Geneva 23, Switzerland
2 UKRI STFC Rutherford Appleton Laboratory (RAL), Harwell Campus, Didcot OX11 0QX, UK
3 Energy Sciences Network (ESnet), Lawrence Berkeley National Laboratory, Berkeley CA 94720, USA
4 Jisc, Portwall Lane, Bristol BS1 6NB, UK
5 Institute of Physics, Academy of Sciences of the Czech Republic, Prague 8, Czech Republic
6 Fermi National Accelerator Laboratory (FNAL), P.O. Box 500, Batavia IL 60510, USA
7 Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
8 Karlsruhe Inst. of Technology, Hermann-v-Helmholtz-Pl. 1, D-76344 Egg.-Leopoldshafen, Germany
9 Brookhaven National Laboratory (BNL), 98 Rochester St., Upton NY 11973, USA
10 University of Michigan Physics, 450 Church St, Ann Arbor, MI 48109, USA
11 Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, D-22607 Hamburg, Germany
12 INFN, Sezione di Milano, via G. Celoria 16, I-20133 Milan, Italy
13 Imperial College London, South Kensington Campus, London SW7 2AZ, UK
* e-mail: david.kelsey@stfc.ac.uk
Published online: 6 May 2024
The transition of the Worldwide Large Hadron Collider Computing Grid (WLCG) storage services to dual-stack IPv6/IPv4 is almost complete; all Tier-1 and 94% of Tier-2 storage are IPv6 enabled. While most data transfers now use IPv6, a significant number of IPv4 transfers still occur even when both endpoints support IPv6. This paper presents the ongoing efforts of the HEPiX IPv6 working group to steer WLCG toward IPv6-only services by investigating and fixing the obstacles to the use of IPv6 and identifying cases where IPv4 is used when IPv6 is available. Removing IPv4 use is essential for the long-term agreed goal of IPv6-only access to resources within WLCG, thus eliminating the complexity and security concerns associated with dual-stack services. We present our achievements and ongoing challenges as we navigate the final stages of the transition from IPv4 to IPv6 within WLCG.
© The Authors, published by EDP Sciences, 2024
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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