Re: [Roll] WGLC for draft-ietf-roll-efficient-npdao-03

"Georgios Z. Papadopoulos" <georgios.papadopoulos@imt-atlantique.fr> Mon, 16 July 2018 10:53 UTC

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From: "Georgios Z. Papadopoulos" <georgios.papadopoulos@imt-atlantique.fr>
In-Reply-To: <CAP+sJUd16DitmEodnJ9Djee39kr3wV0O4h+xiwjq_w2+MHdZkw@mail.gmail.com>
Date: Mon, 16 Jul 2018 13:53:46 +0300
Cc: Routing Over Low power and Lossy networks <roll@ietf.org>, Ines Robles <mariainesrobles@googlemail.com>, peter van der Stok <consultancy@vanderstok.org>
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References: <CAP+sJUd16DitmEodnJ9Djee39kr3wV0O4h+xiwjq_w2+MHdZkw@mail.gmail.com>
To: Rahul Jadhav <rahul.ietf@gmail.com>, "Pascal Thubert (pthubert)" <pthubert@cisco.com>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/roll/4EiwLezoVTxkcB5Udd9Uyb2ebZ0>
Subject: Re: [Roll] WGLC for draft-ietf-roll-efficient-npdao-03
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Dear Roll, Rahul and co-authors,

I find this proposal useful, and quite ready to go.
Please find my (perhaps minor) comments below.
— —

[1] 1.2. Current No-Path DAO messaging
"Subsequently parents or ancestors would release any resources (such as the routing entry) it maintains on behalf of target node.”

[GP] What could be other type of resources, apart from a routing entry, that a parent or ancestors may release? 
Could you provide some more examples?


[2] 3.1. Req#1: Tolerant to link failures to the previous parents
“Therefore, it is required that the NPDAO message MUST be tolerant to the link failure during the switching.”

[GP] How it can be tolerant, when there is a link failure? What could be the potential means to be tolerant?


[3] 4.1. Change in RPL route invalidation semantics
“The trigger for the common ancestor node to generate this DCO is the change in the next hop for the target on reception of an update message in the form of regular DAO for the target.”

[GP] I am having some troubles to understand this sentence, is it possible to be rephrased?


[4] 4.3. Destination Cleanup Object (DCO)
“The DCO message always traverses downstream and cleans up route information and other state information associated with the given target.”

[GP] Similar to comment [1], is it possible to give some examples of state information?

— — 
Best,
Georgios

____________________________________

Georgios Z. Papadopoulos, Ph.D.
Associate Professor, IMT Atlantique, Rennes

web: 	 www.georgiospapadopoulos.com <http://www.georgiospapadopoulos.com/>
twitter: 	@gzpapadopoulos <https://twitter.com/gzpapadopoulos?ref_src=twsrc%5Etfw&ref_url=http://georgiospapadopoulos.com/>
____________________________________

> On Jul 4, 2018, at 11:40, Ines Robles <mariainesrobles@googlemail.com>; wrote:
> 
> Dear all, 
> 
> A Working Group Last call (WGLC) starts today (04/07) until 20/07 for draft-ietf-roll-efficient-npdao-03
> 
> The draft is available here: 
> https://datatracker.ietf.org/doc/draft-ietf-roll-efficient-npdao/ <https://datatracker.ietf.org/doc/draft-ietf-roll-efficient-npdao/>
> 
> Please review this draft to see if you think that it is ready for publication and send comments to the list stating your view. 
> 
> 
> Thank you very much in advance,
> 
> Ines and Peter
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