LHCONE R&D and RNT-WG call

Edoardo Martelli (CERN), Joe Mambretti (International Center for Advanced Internet Research Northwestern University), Marian Babik (CERN), Shawn Mc Kee (University of Michigan (US))
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Edoardo Martelli
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    • 5:00 PM 5:20 PM
      LHCONE 20m

      Present: Edoardo Martelli, Marian Babik, Brain Devies, Asif Shan, Bill Johnston, Luca Bassi, Carmen Misa, Joe Mambretti, Bruno Hoeft, Dale Carder, Harvey Newman, Garhan Atterbury, Thomas Araneta, Jim Chen, Phil Demar, Andy Lake, Giovanni Guerrieri

      Discussion on Multione bgp communities
      - We need an ID also for the infrastructure.
      - No obejection to start the tagging with AS 61339:ExpID
      - Suggestion to write some configuration example.
      - Useful to have a category that is not-production, or testing

      Harvey:  sites are connecting at high bandwidth, and will probably reach 1Tbps before the HL-LHC.

      Next meeting: 7th of May

    • 5:20 PM 5:50 PM
      RNTWG 30m

      Packet marking

      - Packet marking HbH option
         - Tristan started working on the prototype, aiming to have it ready for testing before SC24
         - Justin Lurman (Uni. of Liege) reported around 15% CPU hit (40Gbps Intel XL710)

      - Events and Outreach
         - Scitags talk from LHCOPN/LHCONE is at https://indico.cern.ch/event/1349135/
         - CHEP 2024 abstract at:
               - https://docs.google.com/document/d/15mOa3ICI2Fx_sL-f5hTR-94vFSwMgfuvyjdH7Z59VyU/edit?usp=sharing
         - Site updates (www.scitags.org) - will add all upcoming events for this year (let me know if you plan to give a talk)

      - Firefly (R&E) Collectors
         - Meeting with Andy Lake during LHCOPN/LHCONE workshop
         - Agreed to refactor existing collector with the following goals:
             - Adding Kafka as both input and output plugin (to enable publishing and subscribing to data; publishing already works at ESnet)
             - Simplify current syslog plugin and use UDP as both input and output plugin (already works at CERN)
             - Add transfer rates (bytes/duration)

      Storage developments:
      - StORM already has a prototype for fireflies - works together with flowd (uses flowd's np_api plugin)
          - Meeting to be scheduled

      Packet pacing
      - Several updates were presented at the LHCOPN/LHCONE (https://indico.cern.ch/event/1349135/)
      - Yatish gave an interesting talk showing that high-touch service sees only small fraction of flows (<0.1% or even less) performing retrasmits. We discussed potential implication this would have on the packet pacing efforts.


    • 5:50 PM 5:55 PM
      AOB 5m
    • 5:55 PM 6:00 PM
      Next meeting 5m