Overcoming obstacles to IPv6 on WLCG

Conference · Tue Jan 30 04:00:00 EST 2024

OSTI ID:2283745

Babik, Marian ^[1]; Bly, Martin ^[2]; Buraglio, Nick ^[3]; Chown, Tim ^[4]; Christidis, Dimitrios ^[1]; Chudoba, Jiri ^[5]; DeMar, Phil ^[6]; Molina, José Flix ^[7]; Grigoras, Costin ^[1]; Hoeft, Bruno ^[8]; Ito, Hiro ^[9]; Kelsey, David ^[2]; Martelli, Edoardo ^[1]; McKee, Shawn ^[10]; Moreira, Carmen Misa ^[1]; Nandakumar, Raja ^[2]; Ohrenberg, Kars ^[11]; Prelz, Francesco ^[12]; Rand, Duncan ^[13]; Sciabà, Andrea ^[1] ; Skirvin, Tim ^[6]

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1. CERN
2. Rutherford
3. LBL, Berkeley
4. West England U.
5. Prague, Inst. Phys.
6. Fermilab
7. Madrid, CIEMAT; Madrid, Escuela Tec. Sup. Ing. Ind.
8. KIT, Karlsruhe
9. Brookhaven Natl. Lab.
10. Michigan U.
11. DESY
12. INFN, Milan
13. Imperial Coll., London

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.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 2283745
• Report Number(s): FERMILAB-CONF-22-902-SCD; oai:inspirehep.net:2753104
• Country of Publication: United States
• Language: English

Related Subjects

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