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From: Rahul Jadhav <rahul.ietf@gmail.com>
Date: Mon, 22 Jun 2020 09:10:43 +0800
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To: Routing Over Low power and Lossy networks <roll@ietf.org>
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Subject: Re: [Roll] I-D Action: draft-ietf-roll-mopex-01.txt
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Thanks Rabi for the review.

1. The 'I' bit was introduced recently so that a node not understanding the
option ignores the whole message. This could potentially lead to a node not
joining as a 6LR or a 6LN. The J flag decides only for node joining as 6LR.
As an example, the I bit can be used by root to ensure that only the nodes
understanding a given option join (as 6LN/6LR) that instance. There are
several other possibilities even for non-root nodes.

2. Will fix the typo.

Thanks,
Rahul



On Sun, 21 Jun 2020 at 16:58, rabi narayan sahoo <rabinarayans0828@gmail.co=
m>
wrote:

> Hi Rahul
>
> In section 4 its mentioned
> "I" (Ignore) bit in Option Flags: A node which does not understand the
> Option Type MUST ignore this whole message if the =E2=80=99I=E2=80=99 bit=
 is
> set. If =E2=80=99I=E2=80=99 bit is set* than* the value of =E2=80=99J=E2=
=80=99 and =E2=80=99C=E2=80=99 bits are
> irrelevant and the *message MUST be ignored.*"
>
> 1-  I didn't get why the whole message needs to be ignored if an option i=
s
> not understood?  I think this bit MUST say if the option is optional or
> mandatory. If it's mandatory then 'J' flag will control
>      if the node can join as a leaf or an LR.
>     Am I missing something here?
>
> 2- There is a typo error (Than)
>
> Thanks
> Rabi
>
>
> On Fri, Jun 5, 2020 at 1:11 PM <internet-drafts@ietf.org> wrote:
>
>>
>> A New Internet-Draft is available from the on-line Internet-Drafts
>> directories.
>> This draft is a work item of the Routing Over Low power and Lossy
>> networks WG of the IETF.
>>
>>         Title           : Mode of Operation extension
>>         Authors         : Rahul Arvind Jadhav
>>                           Pascal Thubert
>>                           Michael Richardson
>>         Filename        : draft-ietf-roll-mopex-01.txt
>>         Pages           : 8
>>         Date            : 2020-06-05
>>
>> Abstract:
>>    RPL allows different mode of operations which allows nodes to have a
>>    consensus on the basic primitives that must be supported to join the
>>    network.  The MOP field in [RFC6550] is of 3 bits and is fast
>>    depleting.  This document extends the MOP for future use.
>>
>>
>> The IETF datatracker status page for this draft is:
>> https://datatracker.ietf.org/doc/draft-ietf-roll-mopex/
>>
>> There are also htmlized versions available at:
>> https://tools.ietf.org/html/draft-ietf-roll-mopex-01
>> https://datatracker.ietf.org/doc/html/draft-ietf-roll-mopex-01
>>
>> A diff from the previous version is available at:
>> https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-roll-mopex-01
>>
>>
>> Please note that it may take a couple of minutes from the time of
>> submission
>> until the htmlized version and diff are available at tools.ietf.org.
>>
>> Internet-Drafts are also available by anonymous FTP at:
>> ftp://ftp.ietf.org/internet-drafts/
>>
>>
>> _______________________________________________
>> Roll mailing list
>> Roll@ietf.org
>> https://www.ietf.org/mailman/listinfo/roll
>>
> _______________________________________________
> Roll mailing list
> Roll@ietf.org
> https://www.ietf.org/mailman/listinfo/roll
>

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<div dir=3D"ltr">Thanks Rabi for the review.<br><div><br></div><div>1. The =
&#39;I&#39; bit was introduced recently so that a node not understanding th=
e option ignores the whole message. This could potentially lead to a=C2=A0n=
ode not joining as a 6LR or a 6LN. The J flag decides only for node joining=
 as 6LR. As an example, the I bit can be used by root to ensure that only t=
he nodes understanding a given option join (as 6LN/6LR) that instance. Ther=
e are several other possibilities even for non-root nodes.</div><div><br></=
div><div>2. Will fix the typo.</div><div><br></div><div>Thanks,</div><div>R=
ahul</div><div><br></div><div><br></div></div><br><div class=3D"gmail_quote=
"><div dir=3D"ltr" class=3D"gmail_attr">On Sun, 21 Jun 2020 at 16:58, rabi =
narayan sahoo &lt;<a href=3D"mailto:rabinarayans0828@gmail.com">rabinarayan=
s0828@gmail.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" s=
tyle=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);pad=
ding-left:1ex"><div dir=3D"ltr">Hi Rahul<div><br></div><div>In section 4 it=
s mentioned=C2=A0</div><div>&quot;I&quot; (Ignore) bit in Option Flags: A n=
ode which does not understand the Option Type MUST ignore this whole messag=
e if the =E2=80=99I=E2=80=99 bit is</div>set. If =E2=80=99I=E2=80=99 bit is=
 set<b> than</b> the value of =E2=80=99J=E2=80=99 and =E2=80=99C=E2=80=99 b=
its are irrelevant and the <b>message MUST be ignored.</b>&quot;<div><br></=
div><div>1-=C2=A0 I didn&#39;t get why the whole message needs to be ignore=
d if an option is not understood?=C2=A0 I think this bit MUST say if the op=
tion=C2=A0is optional or mandatory. If it&#39;s mandatory then &#39;J&#39; =
flag will control=C2=A0</div><div>=C2=A0 =C2=A0 =C2=A0if the node can join =
as a leaf or an LR.</div><div>=C2=A0 =C2=A0 Am=C2=A0I missing something her=
e?</div><div><br></div><div>2- There is a typo error (Than)<br><div><br></d=
iv><div>Thanks</div><div>Rabi</div><div><br></div></div></div><br><div clas=
s=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Fri, Jun 5, 2020=
 at 1:11 PM &lt;<a href=3D"mailto:internet-drafts@ietf.org" target=3D"_blan=
k">internet-drafts@ietf.org</a>&gt; wrote:<br></div><blockquote class=3D"gm=
ail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,=
204,204);padding-left:1ex"><br>
A New Internet-Draft is available from the on-line Internet-Drafts director=
ies.<br>
This draft is a work item of the Routing Over Low power and Lossy networks =
WG of the IETF.<br>
<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Title=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0:=
 Mode of Operation extension<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Authors=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0: Rahu=
l Arvind Jadhav<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 Pascal Thubert<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 Michael Richardson<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Filename=C2=A0 =C2=A0 =C2=A0 =C2=A0 : draft-iet=
f-roll-mopex-01.txt<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Pages=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0:=
 8<br>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 Date=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 :=
 2020-06-05<br>
<br>
Abstract:<br>
=C2=A0 =C2=A0RPL allows different mode of operations which allows nodes to =
have a<br>
=C2=A0 =C2=A0consensus on the basic primitives that must be supported to jo=
in the<br>
=C2=A0 =C2=A0network.=C2=A0 The MOP field in [RFC6550] is of 3 bits and is =
fast<br>
=C2=A0 =C2=A0depleting.=C2=A0 This document extends the MOP for future use.=
<br>
<br>
<br>
The IETF datatracker status page for this draft is:<br>
<a href=3D"https://datatracker.ietf.org/doc/draft-ietf-roll-mopex/" rel=3D"=
noreferrer" target=3D"_blank">https://datatracker.ietf.org/doc/draft-ietf-r=
oll-mopex/</a><br>
<br>
There are also htmlized versions available at:<br>
<a href=3D"https://tools.ietf.org/html/draft-ietf-roll-mopex-01" rel=3D"nor=
eferrer" target=3D"_blank">https://tools.ietf.org/html/draft-ietf-roll-mope=
x-01</a><br>
<a href=3D"https://datatracker.ietf.org/doc/html/draft-ietf-roll-mopex-01" =
rel=3D"noreferrer" target=3D"_blank">https://datatracker.ietf.org/doc/html/=
draft-ietf-roll-mopex-01</a><br>
<br>
A diff from the previous version is available at:<br>
<a href=3D"https://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-roll-mopex-01" re=
l=3D"noreferrer" target=3D"_blank">https://www.ietf.org/rfcdiff?url2=3Ddraf=
t-ietf-roll-mopex-01</a><br>
<br>
<br>
Please note that it may take a couple of minutes from the time of submissio=
n<br>
until the htmlized version and diff are available at <a href=3D"http://tool=
s.ietf.org" rel=3D"noreferrer" target=3D"_blank">tools.ietf.org</a>.<br>
<br>
Internet-Drafts are also available by anonymous FTP at:<br>
<a href=3D"ftp://ftp.ietf.org/internet-drafts/" rel=3D"noreferrer" target=
=3D"_blank">ftp://ftp.ietf.org/internet-drafts/</a><br>
<br>
<br>
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arget=3D"_blank">https://www.ietf.org/mailman/listinfo/roll</a><br>
</blockquote></div>
_______________________________________________<br>
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</blockquote></div>

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