Re: [6tisch] Handling Inconsistent Allocation in 6P

2016-11-21 Thread Thomas Watteyne
I'd like to keep 6P simple, and just have a mechanism to detect inconsistencies. I believe roll-back to a previous schedule generation adds too much complexity. From an implementation point of view, cells that are in the process of being reserved (i.e. 6P add request sent but no response received y

[6tisch] [6P+SF0] CALL FOR CONSENSUS: sending a CLEAR request to old parents

2016-11-21 Thread Thomas Watteyne
In thread "Node Behavior at Boot in SF0" ( https://www.ietf.org/mail-archive/web/6tisch/current/msg04883.html), we ended up discussing the following paragraph https://tools.ietf.org/html/draft-ietf-6tisch-6top-sf0-02#section-10: In order to define a known state after the node is restarted, a C

Re: [6tisch] [6TiSCH] Node Behavior at Boot in SF0

2016-11-21 Thread Thomas Watteyne
Yatch, Agreed. Let's me start a different thread where I summarize your suggestion and ask for WG consensus. Thomas On Mon, Nov 21, 2016 at 5:10 PM, Michael Richardson wrote: > > Yasuyuki Tanaka wrote: > >> Sending an explicit CLEAR will speed things up, and avoid for the > >> previous

Re: [6tisch] Handling Inconsistent Allocation in 6P

2016-11-21 Thread Xavi Vilajosana Guillen
Hi Yatch, my 2 cents inline > I've been thinking about how to handle inconsistencies. I know the > current draft has an inconsistency detection mechanism with generation > management; just wondering if there is another way or a supplemental > mechanism to deal with such a situation. > > We decide

[6tisch] Handling Inconsistent Allocation in 6P

2016-11-21 Thread Yasuyuki Tanaka
Hi all, I'd like to bring up Nicola's idea, 6P ACK, which came out on the thread of "SF Timeout calculation (Ticket #53)": https://www.ietf.org/mail-archive/web/6tisch/current/msg04866.html A 6P ack would make the 6P negotiation reliable. B can 'half' open the RX side after receiving the mac

Re: [6tisch] [6TiSCH] Node Behavior at Boot in SF0

2016-11-21 Thread Michael Richardson
Yasuyuki Tanaka wrote: >> Sending an explicit CLEAR will speed things up, and avoid for the >> previous preferred parent to waste energy listening to those. A CLEAR >> wouldn't hurt, right? > This is right. But, I don't think it's a SF0 job. The thing is that SF0 > knows noth

Re: [6tisch] [Anima] 6tisch security bi-weekly meetings

2016-11-21 Thread Michael Richardson
peter van der Stok wrote: > which meeting do you want me to join? You are welcome at both. The 6tisch is probably more important in some ways, The EST/CoAP discussion will be easier to have in the anima group. (I will post to ace about that this week) -- Michael Richardson , Sandelman Soft

Re: [6tisch] [6TiSCH] Node Behavior at Boot in SF0

2016-11-21 Thread Yasuyuki Tanaka
Thank you, Diego. I believe I have correct understanding as you explained. Best, Yatch On 2016/11/21 14:26, Prof. Diego Dujovne wrote: Yatch, From my point of view, the only entities allowed to talk to 6P are the SFs, so a clear command should be triggered by the SF. From the point of

Re: [6tisch] [6TiSCH] Node Behavior at Boot in SF0

2016-11-21 Thread Yasuyuki Tanaka
Hi Thomas, Could we say something to the effect that, if SF0 realizes connection to a particular neighbor is no longer needed (for example a change in parent by the routing protocol) SF0 MAY send CLEAR requests to neighbor to speed up the cleanup process of the cells with that neighbors? I gue

Re: [6tisch] macLinkType for the minimal configuration (draft-ietf-6tisch-minimal-16)

2016-11-21 Thread Thomas Watteyne
cool, thanks On Mon, Nov 21, 2016 at 2:45 PM, Xavi Vilajosana Guillen < xvilajos...@uoc.edu> wrote: > yep, makes sense. We thought it in the wrong way then. > > I update minimal right now. > > thanks for the quick response! > X > > 2016-11-21 14:29 GMT+01:00 Thomas Watteyne : > >> Tero, >> >> You

Re: [6tisch] macLinkType for the minimal configuration (draft-ietf-6tisch-minimal-16)

2016-11-21 Thread Xavi Vilajosana Guillen
yep, makes sense. We thought it in the wrong way then. I update minimal right now. thanks for the quick response! X 2016-11-21 14:29 GMT+01:00 Thomas Watteyne : > Tero, > > Your explanation about setting the cell to ADVERTISING makes sense. > > Xavi? > > Thomas > > On Mon, Nov 21, 2016 at 1:26

Re: [6tisch] macLinkType for the minimal configuration (draft-ietf-6tisch-minimal-16)

2016-11-21 Thread Thomas Watteyne
Tero, Your explanation about setting the cell to ADVERTISING makes sense. Xavi? Thomas On Mon, Nov 21, 2016 at 1:26 PM, Tero Kivinen wrote: > Xavi Vilajosana Guillen writes: > > We discussed this. We said to use NORMAL in order to support any type of > > packet in the minimal cell/s and not o

Re: [6tisch] [6TiSCH] Node Behavior at Boot in SF0

2016-11-21 Thread Prof. Diego Dujovne
Yatch, From my point of view, the only entities allowed to talk to 6P are the SFs, so a clear command should be triggered by the SF. From the point of view of the SF, there will be no more effectively used cells towards that particular neighbour, thus reducing the number of cells to the OV

Re: [6tisch] [6TiSCH] Node Behavior at Boot in SF0

2016-11-21 Thread Thomas Watteyne
Yatch, Hmm, good point. I'm with you that have SF0 be independent from higher layer stuff is the right design approach. But SF0 doesn't really offer any API for upper-layers (it would be against its "minimal" nature). Could we say something to the effect that, if SF0 realizes connection to a part

[6tisch] Thomas' review of draft-richardson-6lo-ra-in-ie-00

2016-11-21 Thread Thomas Watteyne
Michael, all, Please find below my review of draft-richardson-6lo-ra-in-ie-00. Since interesting for both 6lo and 6TISCH, sending to both MLs. Typos fixed directly in line (please use diff), discussion points started at newline with "TW>" prefix. Since short draft, send review in body directly.

Re: [6tisch] macLinkType for the minimal configuration (draft-ietf-6tisch-minimal-16)

2016-11-21 Thread Tero Kivinen
Xavi Vilajosana Guillen writes: > We discussed this. We said to use NORMAL in order to support any type of > packet in the minimal cell/s and not only EBs. From our discussions, I think > that we all understood (at least is what I captured in the minimal text) that > if the type is NORMAL we can al

Re: [6tisch] [6TiSCH] Node Behavior at Boot in SF0

2016-11-21 Thread Yasuyuki Tanaka
Hi Thomas, Sending an explicit CLEAR will speed things up, and avoid for the previous preferred parent to waste energy listening to those. A CLEAR wouldn't hurt, right? This is right. But, I don't think it's a SF0 job. The thing is that SF0 knows nothing about RPL. If SF0 provided an API to s

Re: [6tisch] [Anima] 6tisch security bi-weekly meetings

2016-11-21 Thread peter van der Stok
Hi Michael, which meeting do you want me to join? Peter Michael Richardson schreef op 2016-11-18 04:30: The 6tisch security design team will meet every two weeks starting on November 29th at 14:00 UTC. The meeting is anchored to UTC, not EST, but that will matter only in March. The nov. 29