HEPiX IPv6 working group meeting

Thursday 19 Jan 2023, 16:00 → 17:00 Europe/Zurich

Zoom

David Kelsey (Science and Technology Facilities Council STFC (GB))

Draft agenda - the timings are approximate.

 

HEPiX IPv6 Working Group meeting
Zoom - Thursday 19 Jan 2023 - start at 16:00 CET

Present: Bruno, Carmen, ChrisW, Costin, DaveK, Dimitrios, Duncan, Edoardo, Francesco, Kars, Raja, TimC, TimS, 
Apologies: none

1. Roundtable Updates
 

a. CERN - Edoardo reports that they had found large IPv4 data transfers from NDGF to KIT. Seems to be via NAT from a site in Norway for ALICE experiment.  Sites are dual-stack capable but many PB of data transferred over IPv4. Carmen and Edoardo will continue to investigate.  Edoardo also reports that the routers at CERN have been patched to fix the earlier SFLOW monitoring problems. Time will tell whether this has fixed the SFLOW data or not.

b. Bruno. Still working on Worker Node separation at KIT.

c. Duncan. Nothing to report from UK and/or Imperial.

d. Kars.  Nothing to report from DESY.

e. TimS. FNAL. Asked if anyone knew of problems with IPv6 on Omni/Infiniband.  Nobody reported anything.  ChrisW (Jisc but QMUL before) said he had tried it on internal network and there was no problem.  Only problem was that the Intel compiler needed a public address.

f. Costin. ALICE. Curious about the earlier report of NDGF to KIT. And also interested in Infinband and IPv6 on their online farm.

g. Dimitrios. ATLAS. Nothing to report.

h. Andrea. CMS. Nothing to. Report.

i. Francesco. INFN. He personally has moved to an office without IPv6.  He would like to test more on IPv6-only but he needs to fix lack of IPv6 first! No news from INFN. Also interested in the report by CERN.

J. Raja. LHCb. Nothing to report.

K. ChrisW (Jisc). He discovered recent examples of UK Clouds not yet using IPv6 (IRIS at RAL and in Cambridge). Was interested in experience on OpenStack at CERN.

l. TimC (Jisc). He did a training course on IPv6 at RAL. He reported on work with AWS to bring a POP inside.  But not yet supporting IPv6. He suggested people consult Alex's AWS talk at the UK IPv6 Council meeting in Nov 2022.  It was also reported that ATLAS are talking to GEANT about use of Clouds.

2. Update on Tier2 status
 

Andrea reports that both Vienna and Rio de Janeiro have deployed IPv6.  Total fraction of Tier2 compete is now ~92%.

3. Plans for future conferences.

CHEP2023 (May 2023) in Norfolk, Virginia, USA.  Our abstract has been accepted for a talk. Bruno has a poster. Andrea also reported an abstract accepted.  To be discussed at our Feb 2023 meeting at CERN

ISGC2023 - two accepted abstracts.  Our general one and then Bruno also has a talk. Again the split between the two talks to be discussed at the February meeting.

HEPiX - week after ISGC in Taipei - we need to submit an abstract for an update from the working group.

There is also the LHCONE meeting in Prague in the Spring.

4. Date of next meeting.

22/23 Feb 2023 is now confirmed.  Proposals for the agenda were discussed.  Update from Carmen on IPv4 top talkers; planning for all the conferences; plans as to a date for IPv6-only WLCG; what should we do about worker nodes - push for dual-stack or move straight to IPv6-only; what about IPv6 on other services; an update from monitoring work; the WLCG data challenge in 2024 and use of IPv6; update from SCITAGS packet marking activity.

5. Meeting ended at 17:00 CET

 

16:00 → 16:05 Agree agenda

16:05 → 16:20 Roundtable updates

16:20 → 16:25 Tier2 status

Speakers: Dr Andrea Sciabà (CERN), Bruno Heinrich Hoeft (KIT - Karlsruhe Institute of Technology (DE))

Tier-2 storage deployment status

16:25 → 16:35 Plans for ISGC2023, HEPiX and CHEP.

And what about our asked for contribution to the IPv6 online book?

16:35 → 16:45 Plans for next F2F meeting at CERN

22-23 Feb 2023 at CERN

16:45 → 16:55 Other issues

Traffic monitoring at CERN for LHCOPN/ONE?
Studies to understand use of IPV4 between 2 dual-stack endpoints - update?

16:55 → 17:00 AOB and next meetings