[6tisch] Questions on draft-chang-6tisch-6top-msf

Esteban Municio <esteban.municio@uantwerpen.be> Mon, 13 November 2017 19:19 UTC

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From: Esteban Municio <esteban.municio@uantwerpen.be>
To: "6tisch@ietf.org" <6tisch@ietf.org>
Date: Mon, 13 Nov 2017 20:19:37 +0100
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Archived-At: <https://mailarchive.ietf.org/arch/msg/6tisch/mUoZOKX1LYGoOKbxuJ-2Wo0iwBg>
Subject: [6tisch] Questions on draft-chang-6tisch-6top-msf
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Hi,

After reading the draft I have some small comments.

When requesting the first 6P ADD, the CellsOptions are
TX=1,RX=1,SHARED=1 which means that the cell is bidirectional.
Is there any way to prevent that future EBs and DIOs are sent in this
shared cell? Or the implementation ensures that they will only be sent
in ts=0,ch=0?
When allocating/deallocating cells due to parent switching, is this
initial bidirectional cell allocated with the same CellsOptions in the
new parent as well?
Then if I understand well the node should always have at least one cell
with TX=1,RX=1,SHARED=1 with its preferred parent and has to "re-
allocate" it parallely
in a different 6P message than the used for the dedicated cells with
TX=1,RX=0,SHARED=0. Am I right?

When the nodes start sending DAOs? If it is at Step 6, it could be
interesting mention it there.
Are the DAOs allowed to be sent in the minimal cell?

And maybe a bit off-topic,
Is it possible for a node to have TX cells to neighbours that are not
currently its preferent parent?

Kind regards,
Esteban


-- 

Esteban Municio

IDLab - Dept. Mathematics and Computer Science 

University of Antwerp - imec

Middelheimlaan 1 , 2020 Antwerp, Belgium 

Office M.G.322