Discuss WLCG storage systems and network packet marking

Thursday 6 May 2021, 11:00 → 12:00 America/Detroit

Marian Babik (CERN), Shawn Mc Kee (University of Michigan (US))

Topic: Discuss WLCG storage systems and network packet marking
Time: May 6, 2021 11:00 AM Eastern Time (US and Canada)
https://umich.zoom.us/j/95067226806 Passcode: 058770

We need to meet to discuss what we have learned about packet marking so far and how it might be used with WLCG storage systems.

We would start the meeting with an overview of the packet marking subgroup's findings to date and then discuss how various WLCG storage systems/applications might enable the ability to mark packets based upon science domain and use-case. We would like to see some level of packet marking in place for the upcoming WLCG Data Challenge in the last week of September.

Reference docs/presentations are attached. 

A proposal from the Xrootd team for communicating label values:

https://docs.google.com/document/d/1HTaNwv7huRqdNUvgHJTjlow8MivJgoknRUKgADNlvgY/edit#heading=h.c84ryvst43hq

A proposal from Paul Millar on packet marking for HTTP-TPC:

https://docs.google.com/document/d/1gNlFTuQ6COMCvDQXQsZFx1K0okoMX0tq5e-Wv9LZJ9Y/edit#heading=h.fnjtj7i37l5z

The current packet marking definition: 

https://docs.google.com/spreadsheets/d/1KOkZxmCtLoU2y5DKGjvQEo-A-A3kUN2UqnWIqF-4zoQ/edit#gid=0 

The Packet Marking sub-group working document

The Research Networking Technical Working Group charter

The RNTWG Update from the last HEPiX

The Update and Status presentation from the last LHCONE/LHCOPN meeting

11:00 → 11:05 WLCG Storage Systems and Network Packet Marking: Welcome and Introduction

Review of current packet marking status and discussion of how to implement it for various WLCG storage and file transfer systems.

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

11:05 → 11:25 Research Networking Technical WG Update

Overview of RNTWG with focus on what we have learned and discussed about packet marking.

Speaker: Marian Babik (CERN)

Research Networking Technical Working Group Update

11:25 → 11:55 Discussion about How to Implement Packet Marking in WLCG Storage and File Transfer systems

We need to discuss how to implement packet marking for WLCG storage and transfer systems. What options are best? What timescales are possible? Could we have something partially in place for the WLCG data challenge at the end of September?

Meeting Notes (Feel free to add/edit)

11:55 → 12:00 Summary and Next Steps

Need to review our discussion and suitable next steps.

Speakers: Marian Babik (CERN), Shawn Mc Kee (University of Michigan (US))