Re: [6lo] Update to draft-ayers-low-power-interop-01

"S.V.R.Anand" <anandsvr@iisc.ac.in> Tue, 28 July 2020 14:45 UTC

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Date: Tue, 28 Jul 2020 20:15:33 +0530
From: "S.V.R.Anand" <anandsvr@iisc.ac.in>
To: Hudson Randal Ayers <hayers@stanford.edu>
Cc: "6lo@ietf.org" <6lo@ietf.org>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/6lo/teUHnsrlv3yhvSjxggqZ6FBS0Xw>
Subject: Re: [6lo] Update to draft-ayers-low-power-interop-01
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Hi Hudson Ayers,

I went through the draft and found it very interesting. There are few
points I would like to mention. 

- The figure 1 clearly indicates that the flash size is increasing all
the time. This could be due to the increase in the application demands.
Given that the network stack size is not going to change, even for level
5, don't you think its percentage of share continues to reduce with ever
increasing flash size ? 

- While the draft primarily focuses on the interoperability we may have
to consider certain artifacts that could play out. For instance, how
multicast can possibly be handled ? Would the node use lowest level
among its neighbours ? or all nodes use the level 0 in general ?

- From the perspective of RPL OF, it would be good to mention what one
can expect if we have intermediate nodes supporting different levels of
implementation, meaning different packet sizes in the air.


Regards
Anand



On Mon, Jul 27, 2020 at 12:12:18AM +0000, Hudson Randal Ayers wrote:
> External Email
> 
> Hi all,
> 
> I recently published an update to my Internet draft titled "Design Considerations for Low Power Internet Protocols". It is an informational draft which uses 6LoWPAN as a case study to dissect difficulties achieving interoperability for implementations of low power Internet protocols. I first published this draft two years ago, and originally presented it at the 6LoWPAN working group meeting at IETF 103. I have made a number of updates to this work since then which I think may be of interest to the group, and am presenting these updates at the 6LoWPAN working group meeting at IETF 108 this week.
> 
> A link to the draft can be found here if you are interested! https://tools.ietf.org/html/draft-ayers-low-power-interop-01
> 
> Any feedback is appreciated, as is any discussion at the working group meeting on Wednesday.
> 
> Thanks,
> 
> Hudson Ayers

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