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Routing Over Low power and Lossy networks (Active WG)
Rtg Area: Alvaro Retana, Martin Vigoureux, John Scudder | 2008-Feb-15 —  
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IETF-110 roll minutes

Session 2021-03-11 1530-1630: Room 6 - roll chatroom

Minutes

minutes-110-roll-01 minutes



          IETF110 online meeting - ROLL session
          Thursday, 11th March 2021 - 14:30-15:30 UTC (Thursday Session II)
          Material: https://datatracker.ietf.org/meeting/110/session/roll
          
          Bluesheet/Attendees:
          NOT NEEDED, attendance is recorded in Meetecho
          Agenda (times in UTC)
          [14:30-14:38] WG Status (Ines/Dominique, 8 mn -> 10 mn)
          [14:38-14:53] draft-ietf-roll-dao-projection (Pascal, 15 mn -> 20 mn)
          - [14:53-15:13] RFC6550bis status (Michael, 20 mn)
          [15:13-15:21] draft-ietf-roll-enrollment-priority (Michael, 8 mn ->
          10 mn)
          [15:21-15:29] draft-ietf-roll-mopex (Rahul, 8mn -> 10 mn)
          [15:29-15:30] Open Floor (as time permits)
          [14:30] WG Status (Ines/Dominique)
          note well, scribes
          since IETF109, 4 drafts now in RFC Ed Queue, 1 submitted to IESG
          milestones will need updating
          tickets in tracker and mostly on GitHub
          [14:33] draft-ietf-roll-dao-projection (Pascal)
          since last IETF, simplified mechanism. Tries to make everything look
          similar.
          now, the root of projected DAO is the track ingress
          skeleton (main DODAG or Track) is non-storing, can be made loose with
          storing mode segments inserted
          can be used by WiSUN
          free bit in HbH header used to signal that packet is on project route
          new projected RPI 6LoRH
          simplified rules for P-DAO construction
          P-DAO is DAO that signals full track, using VIO instead of TIO
          UseOfRPLInfo applies unchanged
          local root will copy SR-VIO in 6LoRH unchanged
          6 profiles
          Profile 1 (the original):
          hybrid storing / non-storing mode.
          Use up the amount of store available in the nodes, but no more.
          Bridge the “gaps” with loose hops.
          Profile 2 (expressing the segments as non-storing mode)
          implies re-encapsulation
          Profiles 3-6 do shortcuts
          needs feedback from the group on the topics listed
          Iliar: could a P-DAO be sent to all nodes, not just the egress
          Pascal: can discuss the use cases on the ML
          [15:12] draft-ietf-roll-enrollment-priority (Michael)
          decided at Jan interim to merge two drafts, this version is the result
          exp/mantissa representation of DODAG size
          discussion on ML on what is being measured
          number of routes, not number of nodes
          Pascal: in storing mode, root will only know number of final (currentl
          active) destinations
          Pascal: a same node may have multiple addresses
          experiment needed
          whole draft to be made experimental?
          Pascal: WiSUN needs this information. Luckily, they have one address
          per node.
          MCR: would love to hear feedback from them
          [15:22] draft-ietf-roll-capabilities-07 and draft-ietf-roll-mopex (Rahul)
          capabilities draft updated after the previous meeting
          
          use cases descvribed in doc, e.g., root want to known what a node is
          acapable of
          
          one cap is routing resource available in node
          
          new capability options, with TLVs in it
          
          needs feedback from WG on the current features.
          
          MOP extension
          
          draft describes how to handle all MOP values/cominations
          
          how about backward compatibility: by extending RPL Control Options with
          new flags
          
          flags describe node behaviour if option unknown
          
          took inspiration from CoAP
          
          Pascal: how about a bit combination to specify “dont join at all”,
          e.g. if option says “must compress” and node does not know.
          
          Lets prioritize MOPex over capabilities, since it is a precursor.
          
          Needed reviews in order to proceed with the WGLC.
          
          [15:33] AOB
          RFC6550bis is in github in order to start the work on this topic
          
          [15:33] Adjourn
          Summary of action points
          Feedback required for draft presented today
          
          



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