HEPiX IPv6 Working Group - in person - Manchester UK

28 Jan 2026, 09:00 → 29 Jan 2026, 12:30 Europe/London

Jisc, Manchester

Andrea Sciabà (CERN), Bruno Heinrich Hoeft, David Kelsey (Science and Technology Facilities Council STFC (GB)), Edoardo Martelli (CERN), Tim Chown

 

We will meet in person at the Jisc offices in Manchester, UK.

Jisc
6th Floor, Broadhurst House (formerly Churchgate House)
56 Oxford Street
Manchester
M1 6EU
United Kingdom

All agenda times are quoted in UK local time (GMT/UTC). The start and end dates and times are definite.  The details within the agenda may still change.

Zoom connectivity will also be available for those of you who cannot attend in person.  Login to Indico to see details.

Please register for attendance, even if remote, and specifying if you will attend in person (or not).

 

 

 

Wednesday 28 January

09:00 → 13:45 Session 1

09:00 Arrive and setup

09:30 Official start of meeting - Welcome, agenda, note taker(s)

09:35 General news

Speakers: David Kelsey (Science and Technology Facilities Council STFC (GB)), Edoardo Martelli (CERN)

09:45 Status of IPv6 CPU ticket campaign

Speaker: Dr Andrea Sciabà (CERN)

IPv6 compute deployment 260128.pdf

IPv6 compute deployment 260128.pptx

10:00 Roundtable - Site reports

Not Experiments - they will report on Thursday morning

Speaker: Mattias Wadenstein (University of Umeå (SE))

20260128-IPv4Phaseout.pdf

10:30 Break

11:00 News from UK IPv6 Council meetings

Tim Chown
to report on news from the Annual meeting (18 Nov 2025)
report from yesterday's meeting

11:30 LHCOPN - removal of IPv4 peering - status and immediate plans

Status and short term plans for removing IPv4 peering from some LHCOPN links
Edoardo - general intro
PIC - Pepe or colleague
IHEP - Shan or colleague

Speakers: Edoardo Martelli (CERN), Jose Flix Molina (CIEMAT - Centro de Investigaciones Energéticas Medioambientales y Tec. (ES)), 曾珊 zengshan

LHCOPN IPv6-only progress at IHEP.pdf

WLCG-HEPIX6-20260128-Plan-for-IPv6-only-LHCOPN.pdf

12:15 Lunch break

13:45 → 17:00 Session 2 - this afternoon will allow participation by colleagues from North America: Session 2

13:45 Longer term plans to remove IPv4 from LHCOPN and LHCONE

Discussion

Remove IPv4 from all remaining LHCOPN links - end of 2026, before DC27

Then discuss plans for LHCONE.
We aim to stop using IPv4 for WLCG data transfers on LHCONE before DC29 in time to test for start of HL LHC Run4.

How would we (the WG) like to see this happen?
Remove IPv4 peering?
Or just stop using IPv4 on LHCONE data transfers?

Not our decision - WLCG MB, Experiments, LHCONE community, etc ....

15:00 News from Perfsonar etc

Status and plans for PS
Anything else - e.g. Scitags?

Speaker: Shawn Mc Kee (University of Michigan (US))

Updates from perfSONAR, SciTags and the RNTWG

Updates from perfSONAR, SciTags and the RNTWG.pdf

15:30 Break

16:00 News from USA on deployment of IPv6

ESnet
BNL
FNAL
US-CMS
US-ATLAS

Speakers: Hironori Ito (Brookhaven National Laboratory (US)), Philip Demar

16:30 WLCG use of IPv6 capable DNS services

Update from Francesco Prelz

Speaker: Francesco Prelz (Università degli Studi e INFN Milano (IT))

Thursday 29 January

09:00 → 12:30 Session 3

09:00 Dates of next meetings

09:30 Roundtable news/updates from Experiments

ATLAS (Alessandra)
LHCb (Alvaro)
ALICE (Costin)
CMS (Andrea)

Any news from SLA? (Ian Collier)
Anyone who did not report yesterday?

Speakers: Alessandra Forti (The University of Manchester (GB)), Alvaro Fernandez Casani (Univ. of Valencia and CSIC (ES)), Dr Andrea Sciabà (CERN), Costin Grigoras (CERN)

20260128_hepixWG_IPv6.pdf

ALICE - IPv6 status @ 2026-01-29.pdf

IPv6 for CMS 2026.pdf

IPv6 for CMS 2026.pptx

10:30 Break

11:00 Upcoming conferences and other presentations

ISGC2026 (Taipei)
CHEP2026 (Bangkok)
HEPiX Spring 2026 (Lisbon)

11:30 Other issues to discuss?

All discuss

12:00 AOB and wrap-up

Aim to end meeting by 12:30 - so attendees can start return journey