
From nobody Tue Apr  1 06:54:00 2014
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From: "Ersue, Mehmet (NSN - DE/Munich)" <mehmet.ersue@nsn.com>
To: ext Hannes Tschofenig <hannes.tschofenig@gmx.net>, "coman@ietf.org" <coman@ietf.org>
Thread-Topic: [coman] Purpose of this list?
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Hannes,

I think it is still beneficial to keep the Coman maillist.
The Coman community discusses from time to time issues related to the manag=
ement of constrained devices.

Cheers,=20
Mehmet=20

> -----Original Message-----
> From: coman [mailto:coman-bounces@ietf.org] On Behalf Of ext Hannes
> Tschofenig
> Sent: Monday, March 31, 2014 3:27 PM
> To: coman@ietf.org
> Subject: [coman] Purpose of this list?
>=20
> Hi all,
>=20
> I was wondering what the purpose of this list is given that some of the
> documents have been moved over to the opsawg group.
>=20
> The mailing list overview page at
> https://www.ietf.org/mailman/listinfo/coman does not provide a lot of
> details about the purpose of the group either.
>=20
> Is it time to close this list?
>=20
> Ciao
> Hannes
>=20


From nobody Tue Apr  1 07:08:51 2014
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Date: Tue, 01 Apr 2014 16:08:41 +0200
From: peter van der Stok <stokcons@xs4all.nl>
To: coman@ietf.org
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Hannes,

given that we wil have a meeting on management in Toronto, led by 
Juergen, the list may turn out to be useful.

Peter

Ersue, Mehmet (NSN - DE/Munich) schreef op 2014-04-01 15:53:
> Hannes,
> 
> I think it is still beneficial to keep the Coman maillist.
> The Coman community discusses from time to time issues related to the
> management of constrained devices.
> 
> Cheers,
> Mehmet
> 
>> -----Original Message-----
>> From: coman [mailto:coman-bounces@ietf.org] On Behalf Of ext Hannes
>> Tschofenig
>> Sent: Monday, March 31, 2014 3:27 PM
>> To: coman@ietf.org
>> Subject: [coman] Purpose of this list?
>> 
>> Hi all,
>> 
>> I was wondering what the purpose of this list is given that some of 
>> the
>> documents have been moved over to the opsawg group.
>> 
>> The mailing list overview page at
>> https://www.ietf.org/mailman/listinfo/coman does not provide a lot of
>> details about the purpose of the group either.
>> 
>> Is it time to close this list?
>> 
>> Ciao
>> Hannes
>> 
> 
> _______________________________________________
> coman mailing list
> coman@ietf.org
> https://www.ietf.org/mailman/listinfo/coman


From nobody Tue Apr  1 07:13:02 2014
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From: "Romascanu, Dan (Dan)" <dromasca@avaya.com>
To: "consultancy@vanderstok.org" <consultancy@vanderstok.org>, "coman@ietf.org" <coman@ietf.org>
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Hi Peter,

What is the ' meeting on management in Toronto' that you refer to?=20

I agree that it would be useful to keep this list open for a while at least=
.=20

Thanks and Regards,

Dan


> -----Original Message-----
> From: coman [mailto:coman-bounces@ietf.org] On Behalf Of peter van der
> Stok
> Sent: Tuesday, April 01, 2014 5:09 PM
> To: coman@ietf.org
> Subject: Re: [coman] Purpose of this list?
>=20
> Hannes,
>=20
> given that we wil have a meeting on management in Toronto, led by Juergen=
,
> the list may turn out to be useful.
>=20
> Peter
>=20
> Ersue, Mehmet (NSN - DE/Munich) schreef op 2014-04-01 15:53:
> > Hannes,
> >
> > I think it is still beneficial to keep the Coman maillist.
> > The Coman community discusses from time to time issues related to the
> > management of constrained devices.
> >
> > Cheers,
> > Mehmet
> >
> >> -----Original Message-----
> >> From: coman [mailto:coman-bounces@ietf.org] On Behalf Of ext Hannes
> >> Tschofenig
> >> Sent: Monday, March 31, 2014 3:27 PM
> >> To: coman@ietf.org
> >> Subject: [coman] Purpose of this list?
> >>
> >> Hi all,
> >>
> >> I was wondering what the purpose of this list is given that some of
> >> the documents have been moved over to the opsawg group.
> >>
> >> The mailing list overview page at
> >> https://www.ietf.org/mailman/listinfo/coman does not provide a lot of
> >> details about the purpose of the group either.
> >>
> >> Is it time to close this list?
> >>
> >> Ciao
> >> Hannes
> >>
> >
> > _______________________________________________
> > coman mailing list
> > coman@ietf.org
> > https://www.ietf.org/mailman/listinfo/coman
>=20
> _______________________________________________
> coman mailing list
> coman@ietf.org
> https://www.ietf.org/mailman/listinfo/coman


From nobody Tue Apr  1 07:19:57 2014
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Date: Tue, 01 Apr 2014 16:19:40 +0200
From: peter van der Stok <stokcons@xs4all.nl>
To: "Romascanu, Dan (Dan)" <dromasca@avaya.com>
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Hi Dan,

During the Core meeting it was decided that we needed a special meeting 
on management to look at the ongoing initiatives.

Peter

Romascanu, Dan (Dan) schreef op 2014-04-01 16:12:
> Hi Peter,
> 
> What is the ' meeting on management in Toronto' that you refer to?
> 
> I agree that it would be useful to keep this list open for a while at 
> least.
> 
> Thanks and Regards,
> 
> Dan
> 
> 
>> -----Original Message-----
>> From: coman [mailto:coman-bounces@ietf.org] On Behalf Of peter van der
>> Stok
>> Sent: Tuesday, April 01, 2014 5:09 PM
>> To: coman@ietf.org
>> Subject: Re: [coman] Purpose of this list?
>> 
>> Hannes,
>> 
>> given that we wil have a meeting on management in Toronto, led by 
>> Juergen,
>> the list may turn out to be useful.
>> 
>> Peter
>> 
>> Ersue, Mehmet (NSN - DE/Munich) schreef op 2014-04-01 15:53:
>> > Hannes,
>> >
>> > I think it is still beneficial to keep the Coman maillist.
>> > The Coman community discusses from time to time issues related to the
>> > management of constrained devices.
>> >
>> > Cheers,
>> > Mehmet
>> >
>> >> -----Original Message-----
>> >> From: coman [mailto:coman-bounces@ietf.org] On Behalf Of ext Hannes
>> >> Tschofenig
>> >> Sent: Monday, March 31, 2014 3:27 PM
>> >> To: coman@ietf.org
>> >> Subject: [coman] Purpose of this list?
>> >>
>> >> Hi all,
>> >>
>> >> I was wondering what the purpose of this list is given that some of
>> >> the documents have been moved over to the opsawg group.
>> >>
>> >> The mailing list overview page at
>> >> https://www.ietf.org/mailman/listinfo/coman does not provide a lot of
>> >> details about the purpose of the group either.
>> >>
>> >> Is it time to close this list?
>> >>
>> >> Ciao
>> >> Hannes
>> >>
>> >
>> > _______________________________________________
>> > coman mailing list
>> > coman@ietf.org
>> > https://www.ietf.org/mailman/listinfo/coman
>> 
>> _______________________________________________
>> coman mailing list
>> coman@ietf.org
>> https://www.ietf.org/mailman/listinfo/coman


From nobody Tue Apr  1 08:38:12 2014
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From: "Ersue, Mehmet (NSN - DE/Munich)" <mehmet.ersue@nsn.com>
To: "consultancy@vanderstok.org" <consultancy@vanderstok.org>, "Romascanu, Dan (Dan)" <dromasca@avaya.com>
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Will this be a Core WG session?

Cheers,=20
Mehmet=20

> -----Original Message-----
> From: coman [mailto:coman-bounces@ietf.org] On Behalf Of ext peter van
> der Stok
> Sent: Tuesday, April 01, 2014 4:20 PM
> To: Romascanu, Dan (Dan)
> Cc: coman@ietf.org; consultancy@vanderstok.org
> Subject: Re: [coman] Purpose of this list?
>=20
> Hi Dan,
>=20
> During the Core meeting it was decided that we needed a special meeting
> on management to look at the ongoing initiatives.
>=20
> Peter
>=20
> Romascanu, Dan (Dan) schreef op 2014-04-01 16:12:
> > Hi Peter,
> >
> > What is the ' meeting on management in Toronto' that you refer to?
> >
> > I agree that it would be useful to keep this list open for a while at
> > least.
> >
> > Thanks and Regards,
> >
> > Dan
> >
> >
> >> -----Original Message-----
> >> From: coman [mailto:coman-bounces@ietf.org] On Behalf Of peter van
> der
> >> Stok
> >> Sent: Tuesday, April 01, 2014 5:09 PM
> >> To: coman@ietf.org
> >> Subject: Re: [coman] Purpose of this list?
> >>
> >> Hannes,
> >>
> >> given that we wil have a meeting on management in Toronto, led by
> >> Juergen,
> >> the list may turn out to be useful.
> >>
> >> Peter
> >>
> >> Ersue, Mehmet (NSN - DE/Munich) schreef op 2014-04-01 15:53:
> >> > Hannes,
> >> >
> >> > I think it is still beneficial to keep the Coman maillist.
> >> > The Coman community discusses from time to time issues related to
> the
> >> > management of constrained devices.
> >> >
> >> > Cheers,
> >> > Mehmet
> >> >
> >> >> -----Original Message-----
> >> >> From: coman [mailto:coman-bounces@ietf.org] On Behalf Of ext
> Hannes
> >> >> Tschofenig
> >> >> Sent: Monday, March 31, 2014 3:27 PM
> >> >> To: coman@ietf.org
> >> >> Subject: [coman] Purpose of this list?
> >> >>
> >> >> Hi all,
> >> >>
> >> >> I was wondering what the purpose of this list is given that some
> of
> >> >> the documents have been moved over to the opsawg group.
> >> >>
> >> >> The mailing list overview page at
> >> >> https://www.ietf.org/mailman/listinfo/coman does not provide a
> lot of
> >> >> details about the purpose of the group either.
> >> >>
> >> >> Is it time to close this list?
> >> >>
> >> >> Ciao
> >> >> Hannes
> >> >>
> >> >
> >> > _______________________________________________
> >> > coman mailing list
> >> > coman@ietf.org
> >> > https://www.ietf.org/mailman/listinfo/coman
> >>
> >> _______________________________________________
> >> coman mailing list
> >> coman@ietf.org
> >> https://www.ietf.org/mailman/listinfo/coman
>=20
> _______________________________________________
> coman mailing list
> coman@ietf.org
> https://www.ietf.org/mailman/listinfo/coman


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Date: Tue, 01 Apr 2014 18:43:37 +0200
From: Hannes Tschofenig <hannes.tschofenig@gmx.net>
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Peter, Dan, Mehmet,

given that some of the work moved over to the opsawg group what remains
left here to be discussed?

I heard you saying that this list is useful but not for *what*.

For announcing this special meeting on management you might reach a
wider audience with posts on other lists. Just a suggestion.

Ciao
Hannes



On 04/01/2014 04:19 PM, peter van der Stok wrote:
> Hi Dan,
>=20
> During the Core meeting it was decided that we needed a special meeting=

> on management to look at the ongoing initiatives.
>=20
> Peter
>=20
> Romascanu, Dan (Dan) schreef op 2014-04-01 16:12:
>> Hi Peter,
>>
>> What is the ' meeting on management in Toronto' that you refer to?
>>
>> I agree that it would be useful to keep this list open for a while at
>> least.
>>
>> Thanks and Regards,
>>
>> Dan
>>
>>
>>> -----Original Message-----
>>> From: coman [mailto:coman-bounces@ietf.org] On Behalf Of peter van de=
r
>>> Stok
>>> Sent: Tuesday, April 01, 2014 5:09 PM
>>> To: coman@ietf.org
>>> Subject: Re: [coman] Purpose of this list?
>>>
>>> Hannes,
>>>
>>> given that we wil have a meeting on management in Toronto, led by
>>> Juergen,
>>> the list may turn out to be useful.
>>>
>>> Peter
>>>
>>> Ersue, Mehmet (NSN - DE/Munich) schreef op 2014-04-01 15:53:
>>> > Hannes,
>>> >
>>> > I think it is still beneficial to keep the Coman maillist.
>>> > The Coman community discusses from time to time issues related to t=
he
>>> > management of constrained devices.
>>> >
>>> > Cheers,
>>> > Mehmet
>>> >
>>> >> -----Original Message-----
>>> >> From: coman [mailto:coman-bounces@ietf.org] On Behalf Of ext Hanne=
s
>>> >> Tschofenig
>>> >> Sent: Monday, March 31, 2014 3:27 PM
>>> >> To: coman@ietf.org
>>> >> Subject: [coman] Purpose of this list?
>>> >>
>>> >> Hi all,
>>> >>
>>> >> I was wondering what the purpose of this list is given that some o=
f
>>> >> the documents have been moved over to the opsawg group.
>>> >>
>>> >> The mailing list overview page at
>>> >> https://www.ietf.org/mailman/listinfo/coman does not provide a lot=
 of
>>> >> details about the purpose of the group either.
>>> >>
>>> >> Is it time to close this list?
>>> >>
>>> >> Ciao
>>> >> Hannes
>>> >>
>>> >
>>> > _______________________________________________
>>> > coman mailing list
>>> > coman@ietf.org
>>> > https://www.ietf.org/mailman/listinfo/coman
>>>
>>> _______________________________________________
>>> coman mailing list
>>> coman@ietf.org
>>> https://www.ietf.org/mailman/listinfo/coman
>=20
> _______________________________________________
> coman mailing list
> coman@ietf.org
> https://www.ietf.org/mailman/listinfo/coman


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Subject: Re: [coman] Purpose of this list?
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Peter,
I would be very interested in attending this meeting, since we are doing
lots of very related work in 6TiSCH. If there was any, I must have missed
the announcement e-mail. Could you point me to it?
Thomas


On Tue, Apr 1, 2014 at 9:43 AM, Hannes Tschofenig <hannes.tschofenig@gmx.net
> wrote:

> Peter, Dan, Mehmet,
>
> given that some of the work moved over to the opsawg group what remains
> left here to be discussed?
>
> I heard you saying that this list is useful but not for *what*.
>
> For announcing this special meeting on management you might reach a
> wider audience with posts on other lists. Just a suggestion.
>
> Ciao
> Hannes
>
>
>
> On 04/01/2014 04:19 PM, peter van der Stok wrote:
> > Hi Dan,
> >
> > During the Core meeting it was decided that we needed a special meeting
> > on management to look at the ongoing initiatives.
> >
> > Peter
> >
> > Romascanu, Dan (Dan) schreef op 2014-04-01 16:12:
> >> Hi Peter,
> >>
> >> What is the ' meeting on management in Toronto' that you refer to?
> >>
> >> I agree that it would be useful to keep this list open for a while at
> >> least.
> >>
> >> Thanks and Regards,
> >>
> >> Dan
> >>
> >>
> >>> -----Original Message-----
> >>> From: coman [mailto:coman-bounces@ietf.org] On Behalf Of peter van der
> >>> Stok
> >>> Sent: Tuesday, April 01, 2014 5:09 PM
> >>> To: coman@ietf.org
> >>> Subject: Re: [coman] Purpose of this list?
> >>>
> >>> Hannes,
> >>>
> >>> given that we wil have a meeting on management in Toronto, led by
> >>> Juergen,
> >>> the list may turn out to be useful.
> >>>
> >>> Peter
> >>>
> >>> Ersue, Mehmet (NSN - DE/Munich) schreef op 2014-04-01 15:53:
> >>> > Hannes,
> >>> >
> >>> > I think it is still beneficial to keep the Coman maillist.
> >>> > The Coman community discusses from time to time issues related to the
> >>> > management of constrained devices.
> >>> >
> >>> > Cheers,
> >>> > Mehmet
> >>> >
> >>> >> -----Original Message-----
> >>> >> From: coman [mailto:coman-bounces@ietf.org] On Behalf Of ext Hannes
> >>> >> Tschofenig
> >>> >> Sent: Monday, March 31, 2014 3:27 PM
> >>> >> To: coman@ietf.org
> >>> >> Subject: [coman] Purpose of this list?
> >>> >>
> >>> >> Hi all,
> >>> >>
> >>> >> I was wondering what the purpose of this list is given that some of
> >>> >> the documents have been moved over to the opsawg group.
> >>> >>
> >>> >> The mailing list overview page at
> >>> >> https://www.ietf.org/mailman/listinfo/coman does not provide a lot
> of
> >>> >> details about the purpose of the group either.
> >>> >>
> >>> >> Is it time to close this list?
> >>> >>
> >>> >> Ciao
> >>> >> Hannes
> >>> >>
> >>> >
> >>> > _______________________________________________
> >>> > coman mailing list
> >>> > coman@ietf.org
> >>> > https://www.ietf.org/mailman/listinfo/coman
> >>>
> >>> _______________________________________________
> >>> coman mailing list
> >>> coman@ietf.org
> >>> https://www.ietf.org/mailman/listinfo/coman
> >
> > _______________________________________________
> > coman mailing list
> > coman@ietf.org
> > https://www.ietf.org/mailman/listinfo/coman
>
>
> _______________________________________________
> coman mailing list
> coman@ietf.org
> https://www.ietf.org/mailman/listinfo/coman
>
>

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<div dir=3D"ltr">Peter,<div style>I would be very interested in attending t=
his meeting, since we are doing lots of very related work in 6TiSCH. If the=
re was any, I must have missed the announcement e-mail. Could you point me =
to it?</div>

<div style>Thomas</div></div><div class=3D"gmail_extra"><br><br><div class=
=3D"gmail_quote">On Tue, Apr 1, 2014 at 9:43 AM, Hannes Tschofenig <span di=
r=3D"ltr">&lt;<a href=3D"mailto:hannes.tschofenig@gmx.net" target=3D"_blank=
">hannes.tschofenig@gmx.net</a>&gt;</span> wrote:<br>

<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">Peter, Dan, Mehmet,<br>
<br>
given that some of the work moved over to the opsawg group what remains<br>
left here to be discussed?<br>
<br>
I heard you saying that this list is useful but not for *what*.<br>
<br>
For announcing this special meeting on management you might reach a<br>
wider audience with posts on other lists. Just a suggestion.<br>
<br>
Ciao<br>
<span class=3D"HOEnZb"><font color=3D"#888888">Hannes<br>
</font></span><div class=3D"HOEnZb"><div class=3D"h5"><br>
<br>
<br>
On 04/01/2014 04:19 PM, peter van der Stok wrote:<br>
&gt; Hi Dan,<br>
&gt;<br>
&gt; During the Core meeting it was decided that we needed a special meetin=
g<br>
&gt; on management to look at the ongoing initiatives.<br>
&gt;<br>
&gt; Peter<br>
&gt;<br>
&gt; Romascanu, Dan (Dan) schreef op 2014-04-01 16:12:<br>
&gt;&gt; Hi Peter,<br>
&gt;&gt;<br>
&gt;&gt; What is the &#39; meeting on management in Toronto&#39; that you r=
efer to?<br>
&gt;&gt;<br>
&gt;&gt; I agree that it would be useful to keep this list open for a while=
 at<br>
&gt;&gt; least.<br>
&gt;&gt;<br>
&gt;&gt; Thanks and Regards,<br>
&gt;&gt;<br>
&gt;&gt; Dan<br>
&gt;&gt;<br>
&gt;&gt;<br>
&gt;&gt;&gt; -----Original Message-----<br>
&gt;&gt;&gt; From: coman [mailto:<a href=3D"mailto:coman-bounces@ietf.org">=
coman-bounces@ietf.org</a>] On Behalf Of peter van der<br>
&gt;&gt;&gt; Stok<br>
&gt;&gt;&gt; Sent: Tuesday, April 01, 2014 5:09 PM<br>
&gt;&gt;&gt; To: <a href=3D"mailto:coman@ietf.org">coman@ietf.org</a><br>
&gt;&gt;&gt; Subject: Re: [coman] Purpose of this list?<br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt; Hannes,<br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt; given that we wil have a meeting on management in Toronto, led=
 by<br>
&gt;&gt;&gt; Juergen,<br>
&gt;&gt;&gt; the list may turn out to be useful.<br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt; Peter<br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt; Ersue, Mehmet (NSN - DE/Munich) schreef op 2014-04-01 15:53:<b=
r>
&gt;&gt;&gt; &gt; Hannes,<br>
&gt;&gt;&gt; &gt;<br>
&gt;&gt;&gt; &gt; I think it is still beneficial to keep the Coman maillist=
.<br>
&gt;&gt;&gt; &gt; The Coman community discusses from time to time issues re=
lated to the<br>
&gt;&gt;&gt; &gt; management of constrained devices.<br>
&gt;&gt;&gt; &gt;<br>
&gt;&gt;&gt; &gt; Cheers,<br>
&gt;&gt;&gt; &gt; Mehmet<br>
&gt;&gt;&gt; &gt;<br>
&gt;&gt;&gt; &gt;&gt; -----Original Message-----<br>
&gt;&gt;&gt; &gt;&gt; From: coman [mailto:<a href=3D"mailto:coman-bounces@i=
etf.org">coman-bounces@ietf.org</a>] On Behalf Of ext Hannes<br>
&gt;&gt;&gt; &gt;&gt; Tschofenig<br>
&gt;&gt;&gt; &gt;&gt; Sent: Monday, March 31, 2014 3:27 PM<br>
&gt;&gt;&gt; &gt;&gt; To: <a href=3D"mailto:coman@ietf.org">coman@ietf.org<=
/a><br>
&gt;&gt;&gt; &gt;&gt; Subject: [coman] Purpose of this list?<br>
&gt;&gt;&gt; &gt;&gt;<br>
&gt;&gt;&gt; &gt;&gt; Hi all,<br>
&gt;&gt;&gt; &gt;&gt;<br>
&gt;&gt;&gt; &gt;&gt; I was wondering what the purpose of this list is give=
n that some of<br>
&gt;&gt;&gt; &gt;&gt; the documents have been moved over to the opsawg grou=
p.<br>
&gt;&gt;&gt; &gt;&gt;<br>
&gt;&gt;&gt; &gt;&gt; The mailing list overview page at<br>
&gt;&gt;&gt; &gt;&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/coma=
n" target=3D"_blank">https://www.ietf.org/mailman/listinfo/coman</a> does n=
ot provide a lot of<br>
&gt;&gt;&gt; &gt;&gt; details about the purpose of the group either.<br>
&gt;&gt;&gt; &gt;&gt;<br>
&gt;&gt;&gt; &gt;&gt; Is it time to close this list?<br>
&gt;&gt;&gt; &gt;&gt;<br>
&gt;&gt;&gt; &gt;&gt; Ciao<br>
&gt;&gt;&gt; &gt;&gt; Hannes<br>
&gt;&gt;&gt; &gt;&gt;<br>
&gt;&gt;&gt; &gt;<br>
&gt;&gt;&gt; &gt; _______________________________________________<br>
&gt;&gt;&gt; &gt; coman mailing list<br>
&gt;&gt;&gt; &gt; <a href=3D"mailto:coman@ietf.org">coman@ietf.org</a><br>
&gt;&gt;&gt; &gt; <a href=3D"https://www.ietf.org/mailman/listinfo/coman" t=
arget=3D"_blank">https://www.ietf.org/mailman/listinfo/coman</a><br>
&gt;&gt;&gt;<br>
&gt;&gt;&gt; _______________________________________________<br>
&gt;&gt;&gt; coman mailing list<br>
&gt;&gt;&gt; <a href=3D"mailto:coman@ietf.org">coman@ietf.org</a><br>
&gt;&gt;&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/coman" target=
=3D"_blank">https://www.ietf.org/mailman/listinfo/coman</a><br>
&gt;<br>
&gt; _______________________________________________<br>
&gt; coman mailing list<br>
&gt; <a href=3D"mailto:coman@ietf.org">coman@ietf.org</a><br>
&gt; <a href=3D"https://www.ietf.org/mailman/listinfo/coman" target=3D"_bla=
nk">https://www.ietf.org/mailman/listinfo/coman</a><br>
<br>
</div></div><br>_______________________________________________<br>
coman mailing list<br>
<a href=3D"mailto:coman@ietf.org">coman@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/coman" target=3D"_blank">h=
ttps://www.ietf.org/mailman/listinfo/coman</a><br>
<br></blockquote></div><br></div>

--001a1134183ac124cd04f5fe8f5e--


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Date: Tue, 1 Apr 2014 20:02:24 +0200
From: Carsten Bormann <cabo@tzi.org>
To: "Mehmet (NSN - DE/Munich) Ersue" <mehmet.ersue@nsn.com>
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Subject: Re: [coman] Purpose of this list?
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> Will this be a Core WG session=3F =20

Reserving time on the CoRE agenda is certainly one way to do this. =20
If there is a better way to make progress on a cross-area outlook on the =
subject, I=E2=80=99m certainly open to suggestions.
(And the intention certainly is to build on the work that is completing i=
n OPSAWG now.)

Gr=C3=BC=C3=9Fe, Carsten 
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<span style=3D=22color: rgb(0, 0, 0); font-family: 'Avenir Next', Avenir;=
 font-size: medium; line-height: normal;=22>&gt; Will this be a Core WG s=
ession=3F&nbsp;</span><br><div><span style=3D=22color: rgb(0, 0, 0); font=
-family: 'Avenir Next', Avenir; font-size: medium; line-height: normal;=22=
><br></span></div><div><font color=3D=22=23000000=22 face=3D=22Avenir Nex=
t, Avenir=22 size=3D=223=22><span style=3D=22line-height: normal;=22>Rese=
rving time on the CoRE agenda is certainly one way to do this.</span></fo=
nt></div><div><font color=3D=22=23000000=22 face=3D=22Avenir Next, Avenir=
=22 size=3D=223=22><span style=3D=22line-height: normal;=22>If there is a=
 better way to&nbsp;make progress on a cross-area outlook on the subject,=
 I=E2=80=99m&nbsp;certainly open to suggestions.</span></font></div><div>=
<font color=3D=22=23000000=22 face=3D=22Avenir Next, Avenir=22 size=3D=22=
3=22><span style=3D=22line-height: normal;=22>(And the&nbsp;intention cer=
tainly is to build on the work that is completing in OPSAWG now.)</span><=
/font></div><div><font color=3D=22=23000000=22 face=3D=22Avenir Next, Ave=
nir=22 size=3D=223=22><span style=3D=22line-height: normal;=22><br></span=
></font></div><div><div>Gr=C3=BC=C3=9Fe, Carsten</div></div>
--533aff30_19495cff_11861--


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Subject: Re: [coman] Purpose of this list?
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On Tue, Apr 1, 2014 at 11:02 AM, Carsten Bormann <cabo@tzi.org> wrote:

> > Will this be a Core WG session?
>
> Reserving time on the CoRE agenda is certainly one way to do this.
> If there is a better way to make progress on a cross-area outlook on the
> subject, I'm certainly open to suggestions.
> (And the intention certainly is to build on the work that is completing i=
n
> OPSAWG now.)
>
>
I am very interested in attending this meeting as well. I have been doing
a bit of research on how to adapt/optimize RESTCONF for CoAP.
I think there might be enough interest in this meeting to justify a 1 hour
time-slot
of its own. (Scheduling without cross-area conflicts is another matter).



Gr=FC=DFe, Carsten
>
>
Andy

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<div dir=3D"ltr"><br><div class=3D"gmail_extra"><br><br><div class=3D"gmail=
_quote">On Tue, Apr 1, 2014 at 11:02 AM, Carsten Bormann <span dir=3D"ltr">=
&lt;<a href=3D"mailto:cabo@tzi.org" target=3D"_blank">cabo@tzi.org</a>&gt;<=
/span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><span style=3D"line-height:normal;font-size:=
medium;font-family:&#39;Avenir Next&#39;,Avenir">&gt; Will this be a Core W=
G session?&nbsp;</span><br>
<div><span style=3D"line-height:normal;font-size:medium;font-family:&#39;Av=
enir Next&#39;,Avenir"><br></span></div><div><font color=3D"#000000" face=
=3D"Avenir Next, Avenir" size=3D"3"><span style=3D"line-height:normal">Rese=
rving time on the CoRE agenda is certainly one way to do this.</span></font=
></div>
<div><font color=3D"#000000" face=3D"Avenir Next, Avenir" size=3D"3"><span =
style=3D"line-height:normal">If there is a better way to&nbsp;make progress=
 on a cross-area outlook on the subject, I&rsquo;m&nbsp;certainly open to s=
uggestions.</span></font></div>
<div><font color=3D"#000000" face=3D"Avenir Next, Avenir" size=3D"3"><span =
style=3D"line-height:normal">(And the&nbsp;intention certainly is to build =
on the work that is completing in OPSAWG now.)</span></font></div><div><fon=
t color=3D"#000000" face=3D"Avenir Next, Avenir" size=3D"3"><span style=3D"=
line-height:normal"><br>
</span></font></div></blockquote><div><br></div><div>I am very interested i=
n attending this meeting as well. I have been doing</div><div>a bit of rese=
arch on how to adapt/optimize RESTCONF for CoAP.</div><div>I think there mi=
ght be enough interest in this meeting to justify a 1 hour time-slot</div>
<div>of its own. (Scheduling without cross-area conflicts is another matter=
).</div><div><br></div><div><br></div><div><br></div><blockquote class=3D"g=
mail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-l=
eft:1ex">
<div><font color=3D"#000000" face=3D"Avenir Next, Avenir" size=3D"3"><span =
style=3D"line-height:normal"></span></font></div><div><div>Gr=FC=DFe, Carst=
en</div></div><br></blockquote><div><br></div><div>Andy</div><div><br></div=
></div></div>
</div>

--001a1139a97071f4db04f5ffb45c--


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From: Ulrich Herberg <ulrich@herberg.name>
To: Andy Bierman <andy@yumaworks.com>
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Cc: "Mehmet \(NSN - DE/Munich\) Ersue" <mehmet.ersue@nsn.com>, "coman@ietf.org" <coman@ietf.org>, Carsten Bormann <cabo@tzi.org>, "consultancy@vanderstok.org" <consultancy@vanderstok.org>, "Dan \(Dan\) Romascanu" <dromasca@avaya.com>
Subject: Re: [coman] Purpose of this list?
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I am also interested in this meeting. RESTCONF for COAP is an interesting
option that we have discussed in COMAN before. I'd be interested in
continuing this discussion.

Regards
Ulrich


On Tue, Apr 1, 2014 at 9:54 PM, Andy Bierman <andy@yumaworks.com> wrote:

>
>
>
> On Tue, Apr 1, 2014 at 11:02 AM, Carsten Bormann <cabo@tzi.org> wrote:
>
>> > Will this be a Core WG session?
>>
>> Reserving time on the CoRE agenda is certainly one way to do this.
>> If there is a better way to make progress on a cross-area outlook on the
>> subject, I'm certainly open to suggestions.
>> (And the intention certainly is to build on the work that is completing
>> in OPSAWG now.)
>>
>>
> I am very interested in attending this meeting as well. I have been doing
> a bit of research on how to adapt/optimize RESTCONF for CoAP.
> I think there might be enough interest in this meeting to justify a 1 hou=
r
> time-slot
> of its own. (Scheduling without cross-area conflicts is another matter).
>
>
>
> Gr=FC=DFe, Carsten
>>
>>
> Andy
>
>
> _______________________________________________
> coman mailing list
> coman@ietf.org
> https://www.ietf.org/mailman/listinfo/coman
>
>

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<div dir=3D"ltr"><div><div>I am also interested in this meeting. RESTCONF f=
or COAP is an interesting option that we have discussed in COMAN before. I&=
#39;d be interested in continuing this discussion.<br><br></div>Regards<br>
</div>Ulrich<br></div><div class=3D"gmail_extra"><br><br><div class=3D"gmai=
l_quote">On Tue, Apr 1, 2014 at 9:54 PM, Andy Bierman <span dir=3D"ltr">&lt=
;<a href=3D"mailto:andy@yumaworks.com" target=3D"_blank">andy@yumaworks.com=
</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><div dir=3D"ltr"><br><div class=3D"gmail_ext=
ra"><br><br><div class=3D"gmail_quote"><div><div class=3D"h5">On Tue, Apr 1=
, 2014 at 11:02 AM, Carsten Bormann <span dir=3D"ltr">&lt;<a href=3D"mailto=
:cabo@tzi.org" target=3D"_blank">cabo@tzi.org</a>&gt;</span> wrote:<br>

<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><span style=3D"line-height:normal;font-size:=
medium;font-family:&#39;Avenir Next&#39;,Avenir">&gt; Will this be a Core W=
G session?&nbsp;</span><br>

<div><span style=3D"line-height:normal;font-size:medium;font-family:&#39;Av=
enir Next&#39;,Avenir"><br></span></div><div><font color=3D"#000000" face=
=3D"Avenir Next, Avenir" size=3D"3"><span style=3D"line-height:normal">Rese=
rving time on the CoRE agenda is certainly one way to do this.</span></font=
></div>

<div><font color=3D"#000000" face=3D"Avenir Next, Avenir" size=3D"3"><span =
style=3D"line-height:normal">If there is a better way to&nbsp;make progress=
 on a cross-area outlook on the subject, I&rsquo;m&nbsp;certainly open to s=
uggestions.</span></font></div>

<div><font color=3D"#000000" face=3D"Avenir Next, Avenir" size=3D"3"><span =
style=3D"line-height:normal">(And the&nbsp;intention certainly is to build =
on the work that is completing in OPSAWG now.)</span></font></div><div><fon=
t color=3D"#000000" face=3D"Avenir Next, Avenir" size=3D"3"><span style=3D"=
line-height:normal"><br>

</span></font></div></blockquote><div><br></div></div></div><div>I am very =
interested in attending this meeting as well. I have been doing</div><div>a=
 bit of research on how to adapt/optimize RESTCONF for CoAP.</div><div>
I think there might be enough interest in this meeting to justify a 1 hour =
time-slot</div>
<div>of its own. (Scheduling without cross-area conflicts is another matter=
).</div><div><br></div><div><br></div><div><br></div><blockquote class=3D"g=
mail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-l=
eft:1ex">

<div><font color=3D"#000000" face=3D"Avenir Next, Avenir" size=3D"3"><span =
style=3D"line-height:normal"></span></font></div><div><div>Gr=FC=DFe, Carst=
en</div></div><br></blockquote><span class=3D"HOEnZb"><font color=3D"#88888=
8"><div><br>
</div><div>Andy</div><div><br></div></font></span></div></div>
</div>
<br>_______________________________________________<br>
coman mailing list<br>
<a href=3D"mailto:coman@ietf.org">coman@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/coman" target=3D"_blank">h=
ttps://www.ietf.org/mailman/listinfo/coman</a><br>
<br></blockquote></div><br></div>

--20cf3030c26191aa7304f5ffc9f1--


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Subject: Re: [coman] Purpose of this list?
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[CC'ing 6TiSCH ML]

Andy,

+1. This is an important topic for 6TiSCH.

We went through the exercise of defining the interface of the 6top
management sublayer in YANG [1], and there is a draft explaining how to
access this interface through CoAP [2].

Similar efforts on monitoring and management are going on several WGs
[3-4]; we need some federating mechanism.

Thomas

[1] http://tools.ietf.org/html/draft-ietf-6tisch-6top-interface
[2] http://tools.ietf.org/html/draft-sudhaakar-6tisch-coap-01
[3] http://tools.ietf.org/html/draft-ietf-6lo-lowpan-mib
[4] http://tools.ietf.org/html/draft-vanderstok-core-comi-03


On Tue, Apr 1, 2014 at 11:54 AM, Andy Bierman <andy@yumaworks.com> wrote:

>
>
>
> On Tue, Apr 1, 2014 at 11:02 AM, Carsten Bormann <cabo@tzi.org> wrote:
>
>> > Will this be a Core WG session?
>>
>> Reserving time on the CoRE agenda is certainly one way to do this.
>> If there is a better way to make progress on a cross-area outlook on the
>> subject, I'm certainly open to suggestions.
>> (And the intention certainly is to build on the work that is completing
>> in OPSAWG now.)
>>
>>
> I am very interested in attending this meeting as well. I have been doing
> a bit of research on how to adapt/optimize RESTCONF for CoAP.
> I think there might be enough interest in this meeting to justify a 1 hou=
r
> time-slot
> of its own. (Scheduling without cross-area conflicts is another matter).
>
>
>
> Gr=FC=DFe, Carsten
>>
>>
> Andy
>
>
> _______________________________________________
> coman mailing list
> coman@ietf.org
> https://www.ietf.org/mailman/listinfo/coman
>
>

--047d7b6735ea2fee4604f5ffe2ca
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<div dir=3D"ltr"><div style>[CC&#39;ing 6TiSCH ML]</div><div><br></div>Andy=
,<div style><br></div><div style>+1. This is an important topic for 6TiSCH.=
</div><div style><br></div><div style>We went through the exercise of defin=
ing the interface of the 6top management sublayer in YANG [1], and there is=
 a draft explaining&nbsp;how to access this interface through CoAP [2].</di=
v>

<div style><br></div><div style>Similar efforts on monitoring and managemen=
t are going on several WGs [3-4]; we need some federating mechanism.</div><=
div style><br></div><div style>Thomas</div><div style><br></div><div style>

[1] <a href=3D"http://tools.ietf.org/html/draft-ietf-6tisch-6top-interface"=
>http://tools.ietf.org/html/draft-ietf-6tisch-6top-interface</a><br></div><=
div style>[2]&nbsp;<a href=3D"http://tools.ietf.org/html/draft-sudhaakar-6t=
isch-coap-01">http://tools.ietf.org/html/draft-sudhaakar-6tisch-coap-01</a>=
</div>

<div style>[3]&nbsp;<a href=3D"http://tools.ietf.org/html/draft-ietf-6lo-lo=
wpan-mib">http://tools.ietf.org/html/draft-ietf-6lo-lowpan-mib</a></div><di=
v style>[4]&nbsp;<a href=3D"http://tools.ietf.org/html/draft-vanderstok-cor=
e-comi-03">http://tools.ietf.org/html/draft-vanderstok-core-comi-03</a></di=
v>

</div><div class=3D"gmail_extra"><br><br><div class=3D"gmail_quote">On Tue,=
 Apr 1, 2014 at 11:54 AM, Andy Bierman <span dir=3D"ltr">&lt;<a href=3D"mai=
lto:andy@yumaworks.com" target=3D"_blank">andy@yumaworks.com</a>&gt;</span>=
 wrote:<br>

<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><div dir=3D"ltr"><br><div class=3D"gmail_ext=
ra"><br><br><div class=3D"gmail_quote"><div><div class=3D"h5">On Tue, Apr 1=
, 2014 at 11:02 AM, Carsten Bormann <span dir=3D"ltr">&lt;<a href=3D"mailto=
:cabo@tzi.org" target=3D"_blank">cabo@tzi.org</a>&gt;</span> wrote:<br>


<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><span style=3D"line-height:normal;font-size:=
medium;font-family:&#39;Avenir Next&#39;,Avenir">&gt; Will this be a Core W=
G session?&nbsp;</span><br>


<div><span style=3D"line-height:normal;font-size:medium;font-family:&#39;Av=
enir Next&#39;,Avenir"><br></span></div><div><font color=3D"#000000" face=
=3D"Avenir Next, Avenir" size=3D"3"><span style=3D"line-height:normal">Rese=
rving time on the CoRE agenda is certainly one way to do this.</span></font=
></div>


<div><font color=3D"#000000" face=3D"Avenir Next, Avenir" size=3D"3"><span =
style=3D"line-height:normal">If there is a better way to&nbsp;make progress=
 on a cross-area outlook on the subject, I&rsquo;m&nbsp;certainly open to s=
uggestions.</span></font></div>


<div><font color=3D"#000000" face=3D"Avenir Next, Avenir" size=3D"3"><span =
style=3D"line-height:normal">(And the&nbsp;intention certainly is to build =
on the work that is completing in OPSAWG now.)</span></font></div><div><fon=
t color=3D"#000000" face=3D"Avenir Next, Avenir" size=3D"3"><span style=3D"=
line-height:normal"><br>


</span></font></div></blockquote><div><br></div></div></div><div>I am very =
interested in attending this meeting as well. I have been doing</div><div>a=
 bit of research on how to adapt/optimize RESTCONF for CoAP.</div><div>

I think there might be enough interest in this meeting to justify a 1 hour =
time-slot</div>
<div>of its own. (Scheduling without cross-area conflicts is another matter=
).</div><div><br></div><div><br></div><div><br></div><blockquote class=3D"g=
mail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-l=
eft:1ex">


<div><font color=3D"#000000" face=3D"Avenir Next, Avenir" size=3D"3"><span =
style=3D"line-height:normal"></span></font></div><div><div>Gr=FC=DFe, Carst=
en</div></div><br></blockquote><span class=3D"HOEnZb"><font color=3D"#88888=
8"><div><br>

</div><div>Andy</div><div><br></div></font></span></div></div>
</div>
<br>_______________________________________________<br>
coman mailing list<br>
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ttps://www.ietf.org/mailman/listinfo/coman</a><br>
<br></blockquote></div><br></div>

--047d7b6735ea2fee4604f5ffe2ca--


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From: "Ersue, Mehmet (NSN - DE/Munich)" <mehmet.ersue@nsn.com>
To: ext Hannes Tschofenig <hannes.tschofenig@gmx.net>, "consultancy@vanderstok.org" <consultancy@vanderstok.org>, "Romascanu, Dan (Dan)" <dromasca@avaya.com>
Thread-Topic: [coman] Purpose of this list?
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As you see there is a discussion already on RESTCONF for CoAP.
Mainly topics on management of networks with constrained devices,
which do not have a home.

Cheers,=20
Mehmet=20

> -----Original Message-----
> From: coman [mailto:coman-bounces@ietf.org] On Behalf Of ext Hannes
> Tschofenig
> Sent: Tuesday, April 01, 2014 6:44 PM
> To: consultancy@vanderstok.org; Romascanu, Dan (Dan)
> Cc: coman@ietf.org
> Subject: Re: [coman] Purpose of this list?
>=20
> Peter, Dan, Mehmet,
>=20
> given that some of the work moved over to the opsawg group what remains
> left here to be discussed?
>=20
> I heard you saying that this list is useful but not for *what*.
>=20
> For announcing this special meeting on management you might reach a
> wider audience with posts on other lists. Just a suggestion.
>=20
> Ciao
> Hannes
>=20
>=20
>=20
> On 04/01/2014 04:19 PM, peter van der Stok wrote:
> > Hi Dan,
> >
> > During the Core meeting it was decided that we needed a special
> meeting
> > on management to look at the ongoing initiatives.
> >
> > Peter
> >
> > Romascanu, Dan (Dan) schreef op 2014-04-01 16:12:
> >> Hi Peter,
> >>
> >> What is the ' meeting on management in Toronto' that you refer to?
> >>
> >> I agree that it would be useful to keep this list open for a while
> at
> >> least.
> >>
> >> Thanks and Regards,
> >>
> >> Dan
> >>
> >>
> >>> -----Original Message-----
> >>> From: coman [mailto:coman-bounces@ietf.org] On Behalf Of peter van
> der
> >>> Stok
> >>> Sent: Tuesday, April 01, 2014 5:09 PM
> >>> To: coman@ietf.org
> >>> Subject: Re: [coman] Purpose of this list?
> >>>
> >>> Hannes,
> >>>
> >>> given that we wil have a meeting on management in Toronto, led by
> >>> Juergen,
> >>> the list may turn out to be useful.
> >>>
> >>> Peter
> >>>
> >>> Ersue, Mehmet (NSN - DE/Munich) schreef op 2014-04-01 15:53:
> >>> > Hannes,
> >>> >
> >>> > I think it is still beneficial to keep the Coman maillist.
> >>> > The Coman community discusses from time to time issues related to
> the
> >>> > management of constrained devices.
> >>> >
> >>> > Cheers,
> >>> > Mehmet
> >>> >
> >>> >> -----Original Message-----
> >>> >> From: coman [mailto:coman-bounces@ietf.org] On Behalf Of ext
> Hannes
> >>> >> Tschofenig
> >>> >> Sent: Monday, March 31, 2014 3:27 PM
> >>> >> To: coman@ietf.org
> >>> >> Subject: [coman] Purpose of this list?
> >>> >>
> >>> >> Hi all,
> >>> >>
> >>> >> I was wondering what the purpose of this list is given that some
> of
> >>> >> the documents have been moved over to the opsawg group.
> >>> >>
> >>> >> The mailing list overview page at
> >>> >> https://www.ietf.org/mailman/listinfo/coman does not provide a
> lot of
> >>> >> details about the purpose of the group either.
> >>> >>
> >>> >> Is it time to close this list?
> >>> >>
> >>> >> Ciao
> >>> >> Hannes
> >>> >>
> >>> >
> >>> > _______________________________________________
> >>> > coman mailing list
> >>> > coman@ietf.org
> >>> > https://www.ietf.org/mailman/listinfo/coman
> >>>
> >>> _______________________________________________
> >>> coman mailing list
> >>> coman@ietf.org
> >>> https://www.ietf.org/mailman/listinfo/coman
> >
> > _______________________________________________
> > coman mailing list
> > coman@ietf.org
> > https://www.ietf.org/mailman/listinfo/coman


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From: Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>
To: Carsten Bormann <cabo@tzi.org>
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Subject: Re: [coman] Purpose of this list?
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On Tue, Apr 01, 2014 at 08:02:24PM +0200, Carsten Bormann wrote:
> > Will this be a Core WG session?  
> 
> Reserving time on the CoRE agenda is certainly one way to do this.  
> If there is a better way to make progress on a cross-area outlook on the subject, I’m certainly open to suggestions.
> (And the intention certainly is to build on the work that is completing in OPSAWG now.)
> 

As far as I recall, the idea in London was to have a meeting of
interested people outside the official CORE WG meeting, e.g., on
Sunday. It seems we would need more time to get an understanding what
people are working on in various places and how to converge to
something that can become actionable work within the IETF.

/js

-- 
Juergen Schoenwaelder           Jacobs University Bremen gGmbH
Phone: +49 421 200 3587         Campus Ring 1, 28759 Bremen, Germany
Fax:   +49 421 200 3103         <http://www.jacobs-university.de/>


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Subject: Re: [coman] Purpose of this list?
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On 04/01/2014 11:45 PM, Ersue, Mehmet (NSN - DE/Munich) wrote:> As you
see there is a discussion already on RESTCONF for CoAP.
> Mainly topics on management of networks with constrained devices,
> which do not have a home.

Are there specific documents to look at?

Ciao
Hannes

>=20
> Cheers,=20
> Mehmet=20
>=20
>> -----Original Message-----
>> From: coman [mailto:coman-bounces@ietf.org] On Behalf Of ext Hannes
>> Tschofenig
>> Sent: Tuesday, April 01, 2014 6:44 PM
>> To: consultancy@vanderstok.org; Romascanu, Dan (Dan)
>> Cc: coman@ietf.org
>> Subject: Re: [coman] Purpose of this list?
>>
>> Peter, Dan, Mehmet,
>>
>> given that some of the work moved over to the opsawg group what remain=
s
>> left here to be discussed?
>>
>> I heard you saying that this list is useful but not for *what*.
>>
>> For announcing this special meeting on management you might reach a
>> wider audience with posts on other lists. Just a suggestion.
>>
>> Ciao
>> Hannes
>>
>>
>>
>> On 04/01/2014 04:19 PM, peter van der Stok wrote:
>>> Hi Dan,
>>>
>>> During the Core meeting it was decided that we needed a special
>> meeting
>>> on management to look at the ongoing initiatives.
>>>
>>> Peter
>>>
>>> Romascanu, Dan (Dan) schreef op 2014-04-01 16:12:
>>>> Hi Peter,
>>>>
>>>> What is the ' meeting on management in Toronto' that you refer to?
>>>>
>>>> I agree that it would be useful to keep this list open for a while
>> at
>>>> least.
>>>>
>>>> Thanks and Regards,
>>>>
>>>> Dan
>>>>
>>>>
>>>>> -----Original Message-----
>>>>> From: coman [mailto:coman-bounces@ietf.org] On Behalf Of peter van
>> der
>>>>> Stok
>>>>> Sent: Tuesday, April 01, 2014 5:09 PM
>>>>> To: coman@ietf.org
>>>>> Subject: Re: [coman] Purpose of this list?
>>>>>
>>>>> Hannes,
>>>>>
>>>>> given that we wil have a meeting on management in Toronto, led by
>>>>> Juergen,
>>>>> the list may turn out to be useful.
>>>>>
>>>>> Peter
>>>>>
>>>>> Ersue, Mehmet (NSN - DE/Munich) schreef op 2014-04-01 15:53:
>>>>>> Hannes,
>>>>>>
>>>>>> I think it is still beneficial to keep the Coman maillist.
>>>>>> The Coman community discusses from time to time issues related to
>> the
>>>>>> management of constrained devices.
>>>>>>
>>>>>> Cheers,
>>>>>> Mehmet
>>>>>>
>>>>>>> -----Original Message-----
>>>>>>> From: coman [mailto:coman-bounces@ietf.org] On Behalf Of ext
>> Hannes
>>>>>>> Tschofenig
>>>>>>> Sent: Monday, March 31, 2014 3:27 PM
>>>>>>> To: coman@ietf.org
>>>>>>> Subject: [coman] Purpose of this list?
>>>>>>>
>>>>>>> Hi all,
>>>>>>>
>>>>>>> I was wondering what the purpose of this list is given that some
>> of
>>>>>>> the documents have been moved over to the opsawg group.
>>>>>>>
>>>>>>> The mailing list overview page at
>>>>>>> https://www.ietf.org/mailman/listinfo/coman does not provide a
>> lot of
>>>>>>> details about the purpose of the group either.
>>>>>>>
>>>>>>> Is it time to close this list?
>>>>>>>
>>>>>>> Ciao
>>>>>>> Hannes
>>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> coman mailing list
>>>>>> coman@ietf.org
>>>>>> https://www.ietf.org/mailman/listinfo/coman
>>>>>
>>>>> _______________________________________________
>>>>> coman mailing list
>>>>> coman@ietf.org
>>>>> https://www.ietf.org/mailman/listinfo/coman
>>>
>>> _______________________________________________
>>> coman mailing list
>>> coman@ietf.org
>>> https://www.ietf.org/mailman/listinfo/coman
>=20


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Subject: [coman] Device Classes?
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A question out of curiosity:

The LWIG terminology document defines classes of devices and makes
statements about what can and cannot be done for each class.

IMHO these classes are about end devices rather than constrained routers
and switches. Guys in the network management environment seem to care a
lot about the management of network nodes.

What are the expectations about RAM, flash size, CPU requirements, etc.
for these constrained routers/switches?

Ciao
Hannes


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Hannes,

I would really like a solution which allows monitoring and management of C1
devices [1]. If built around protocols which have been designed for these
types of devices (e.g. CoAP), I don't believe adding this functionality to
a node will have a large impact on code footprint.

What do others think?

Thomas

[1] http://tools.ietf.org/html/draft-ietf-lwig-terminology-07#section-3


On Wed, Apr 2, 2014 at 12:43 AM, Hannes Tschofenig <
hannes.tschofenig@gmx.net> wrote:

> A question out of curiosity:
>
> The LWIG terminology document defines classes of devices and makes
> statements about what can and cannot be done for each class.
>
> IMHO these classes are about end devices rather than constrained routers
> and switches. Guys in the network management environment seem to care a
> lot about the management of network nodes.
>
> What are the expectations about RAM, flash size, CPU requirements, etc.
> for these constrained routers/switches?
>
> Ciao
> Hannes
>
>
> _______________________________________________
> coman mailing list
> coman@ietf.org
> https://www.ietf.org/mailman/listinfo/coman
>
>

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<div dir=3D"ltr">Hannes,<div><br></div><div>I would really like a solution =
which allows monitoring and management of C1 devices [1]. If built around p=
rotocols which have been designed for these types of devices (e.g. CoAP), I=
 don&#39;t believe adding this functionality to a node will have a large im=
pact on code footprint.</div>

<div><br></div><div>What do others think?</div><div><br></div><div>Thomas</=
div><div><br></div><div>[1]=A0<a href=3D"http://tools.ietf.org/html/draft-i=
etf-lwig-terminology-07#section-3">http://tools.ietf.org/html/draft-ietf-lw=
ig-terminology-07#section-3</a></div>

</div><div class=3D"gmail_extra"><br><br><div class=3D"gmail_quote">On Wed,=
 Apr 2, 2014 at 12:43 AM, Hannes Tschofenig <span dir=3D"ltr">&lt;<a href=
=3D"mailto:hannes.tschofenig@gmx.net" target=3D"_blank">hannes.tschofenig@g=
mx.net</a>&gt;</span> wrote:<br>

<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">A question out of curiosity:<br>
<br>
The LWIG terminology document defines classes of devices and makes<br>
statements about what can and cannot be done for each class.<br>
<br>
IMHO these classes are about end devices rather than constrained routers<br=
>
and switches. Guys in the network management environment seem to care a<br>
lot about the management of network nodes.<br>
<br>
What are the expectations about RAM, flash size, CPU requirements, etc.<br>
for these constrained routers/switches?<br>
<br>
Ciao<br>
<span class=3D"HOEnZb"><font color=3D"#888888">Hannes<br>
<br>
</font></span><br>_______________________________________________<br>
coman mailing list<br>
<a href=3D"mailto:coman@ietf.org">coman@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/coman" target=3D"_blank">h=
ttps://www.ietf.org/mailman/listinfo/coman</a><br>
<br></blockquote></div><br></div>

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On 02 Apr 2014, at 09:43, Hannes Tschofenig <hannes.tschofenig@gmx.net> =
wrote:

> IMHO these classes are about end devices rather than constrained =
routers
> and switches.

Actually, the device classes are about nodes in general (hosts and =
routers).  The document then goes on to say:

   (An alternative name, when the properties as a network node are not
   in focus, is "constrained device=94.)

Protocols such as RPL take great care to enable the use of class-1 =
devices as routers (non-storing mode).
Constrained management will need to match that.

A more important dichotomy than host vs. router may be monitoring vs. =
configuration.

Gr=FC=DFe, Carsten


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Hi Carsten,


I am getting more and more uncomfortable with these classes due to the
fuzzy definition.

I wonder whether someone has tried to implement a router with
* an IPv6 stack
* RPL
* security stuff (such as DTLS, EAP, PANA)
* network management protocol (as Thomas was asking for)
* CoAP
* DNS
* software update mechanism
* + the actual application

on a class 1 device.

Ciao
Hannes

On 04/04/2014 09:24 AM, Carsten Bormann wrote:
> On 02 Apr 2014, at 09:43, Hannes Tschofenig <hannes.tschofenig@gmx.net>=
 wrote:
>=20
>> IMHO these classes are about end devices rather than constrained route=
rs
>> and switches.
>=20
> Actually, the device classes are about nodes in general (hosts and rout=
ers).  The document then goes on to say:
>=20
>    (An alternative name, when the properties as a network node are not
>    in focus, is "constrained device=94.)
>=20
> Protocols such as RPL take great care to enable the use of class-1 devi=
ces as routers (non-storing mode).
> Constrained management will need to match that.
>=20
> A more important dichotomy than host vs. router may be monitoring vs. c=
onfiguration.
>=20
> Gr=FC=DFe, Carsten
>=20
> _______________________________________________
> coman mailing list
> coman@ietf.org
> https://www.ietf.org/mailman/listinfo/coman
>=20


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From: "Sehgal, Anuj" <s.anuj@jacobs-university.de>
To: Hannes Tschofenig <hannes.tschofenig@gmx.net>
Thread-Topic: [coman] Device Classes?
Thread-Index: AQHPTketD8PYZfapr0ukiqo6WmJRuZsA77uAgAAcAoCAAA5SgA==
Date: Fri, 4 Apr 2014 09:55:55 +0000
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Subject: Re: [coman] Device Classes?
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Hi,

I have on several occasions used Contiki to implement applications using so=
me combination of the following stack on Class 1 devices (TelosB):

> I wonder whether someone has tried to implement a router with
> * an IPv6 stack
> * RPL
> * network management protocol (as Thomas was asking for)
> * CoAP
> * + the actual application

After fitting all this in, there really is no space left for security (DTLS=
, etc.).=20

Fitting DNS should not be too complicated provided we knock off something f=
rom this list (either CoAP or network management protocol, SNMP in our case=
), but I say this based on experience with an mDNS implementation we did a =
few years ago that works on AVR Raven devices (closer to Class 2).=20

In general, a basic Contiki 2.6 system (minus CoAP from above) takes up abo=
ut 85% of Flash and statically allocated RAM on a TelosB (Class 1). Adding =
CoAP and a network management protocol will push this further, with nearly =
no space left. In fact, if the data model is too large or complicated for t=
he network management protocol, then chances are that it too would not fit =
either. Similar constraints apply to CoAP as well. Working with CoAP up to =
Contiki 2.6, while using TelosB (Class 1), was also quite a struggle. At be=
st we were able to work with a handful of resources, since the amount of me=
mory left over was not too much.

I have not checked while writing this email, but at least in the past it wa=
s the RPL implementation that would take a significant amount of resources.=
 This was largely due to non-storing mode not being implemented, but it wou=
ld seem that Contiki 2.7 does have the option to enable non-storing mode. T=
his might help reduce resource consumption further.

When we attempted an implementation of DTLS, we used the AVR Raven (Class 2=
) because TelosB (Class 1) did not have enough resources to function with i=
t.

Regards,
Anuj

> On 04/04/2014 09:24 AM, Carsten Bormann wrote:
>> On 02 Apr 2014, at 09:43, Hannes Tschofenig <hannes.tschofenig@gmx.net> =
wrote:
>>=20
>>> IMHO these classes are about end devices rather than constrained router=
s
>>> and switches.
>>=20
>> Actually, the device classes are about nodes in general (hosts and route=
rs).  The document then goes on to say:
>>=20
>>   (An alternative name, when the properties as a network node are not
>>   in focus, is "constrained device=94.)
>>=20
>> Protocols such as RPL take great care to enable the use of class-1 devic=
es as routers (non-storing mode).
>> Constrained management will need to match that.
>>=20
>> A more important dichotomy than host vs. router may be monitoring vs. co=
nfiguration.
>>=20
>> Gr=FC=DFe, Carsten
>>=20
>> _______________________________________________
>> coman mailing list
>> coman@ietf.org
>> https://www.ietf.org/mailman/listinfo/coman
>>=20
>=20
> _______________________________________________
> coman mailing list
> coman@ietf.org
> https://www.ietf.org/mailman/listinfo/coman


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On 04 Apr 2014, at 11:04, Hannes Tschofenig <hannes.tschofenig@gmx.net> =
wrote:

> Hi Carsten,
>=20
>=20
> I am getting more and more uncomfortable with these classes due to the
> fuzzy definition.
>=20
> I wonder whether someone has tried to implement a router with
> * an IPv6 stack
> * RPL
> * security stuff (such as DTLS, EAP, PANA)
> * network management protocol (as Thomas was asking for)
> * CoAP
> * DNS
> * software update mechanism
> * + the actual application
>=20
> on a class 1 device.

Well, that exactly is the problem.
The biggest issue here is the software update mechanism, if you want =
that to work over the air.
(Generally, to make a full over the air software update work on a system =
with in-place execution from Flash and very small amounts of RAM you =
need to structure the Flash-based code in a very special way.)
Apart from that, leave out EAP/PANA, DNS, and this is doable.

Gr=FC=DFe, Carsten


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For me the software update mechanism is extremely important since it is
not just a way to replace the entire firmware but also to provision
certain protocol parameters.

For example, in the DICE DTLS Profile document there are various
information elements that may need to be changed over the lifetime of
the device, such as trust anchors and CRL-related information.

You also cannot omit EAP/PANA from that list since many devices will
likely need to have a way to authenticate to the network. Of course,
with a properly chosen EAP method the additional code requirements can
be kept fairly small but it will not be zero.

Ciao
Hannes

On 04/04/2014 12:25 PM, Carsten Bormann wrote:
> On 04 Apr 2014, at 11:04, Hannes Tschofenig <hannes.tschofenig@gmx.net>=
 wrote:
>=20
>> Hi Carsten,
>>
>>
>> I am getting more and more uncomfortable with these classes due to the=

>> fuzzy definition.
>>
>> I wonder whether someone has tried to implement a router with
>> * an IPv6 stack
>> * RPL
>> * security stuff (such as DTLS, EAP, PANA)
>> * network management protocol (as Thomas was asking for)
>> * CoAP
>> * DNS
>> * software update mechanism
>> * + the actual application
>>
>> on a class 1 device.
>=20
> Well, that exactly is the problem.
> The biggest issue here is the software update mechanism, if you want th=
at to work over the air.
> (Generally, to make a full over the air software update work on a syste=
m with in-place execution from Flash and very small amounts of RAM you ne=
ed to structure the Flash-based code in a very special way.)
> Apart from that, leave out EAP/PANA, DNS, and this is doable.
>=20
> Gr=FC=DFe, Carsten
>=20


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On 04 Apr 2014, at 13:32, Hannes Tschofenig <hannes.tschofenig@gmx.net> =
wrote:

> For me the software update mechanism is extremely important since it =
is
> not just a way to replace the entire firmware but also to provision
> certain protocol parameters.

Provisioning protocol parameters is one CoAP PUT to the right resource.  =
Cf. OMA LWM2M.
(They also do define a firmware update mechanism, but that seems to =
presume the device has space for a complete firmware image.)

Replacing the software that is running during the software update is the =
fun part, and that is somewhat expensive to support (add the requirement =
for a rollback capability for a realistic scenario).

> You also cannot omit EAP/PANA from that list since many devices will
> likely need to have a way to authenticate to the network.

If you want to do this the SEP2.0 way, you need EAP/PANA.
(SEP2.0 is targeting class-2+, not class-1.)

Gr=FC=DFe, Carsten


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Subject: Re: [coman] Device Classes?
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Hi Carsten.


On 04/04/2014 02:08 PM, Carsten Bormann wrote:
> On 04 Apr 2014, at 13:32, Hannes Tschofenig <hannes.tschofenig@gmx.net>=
 wrote:
>=20
>> For me the software update mechanism is extremely important since it i=
s
>> not just a way to replace the entire firmware but also to provision
>> certain protocol parameters.
>=20
> Provisioning protocol parameters is one CoAP PUT to the right resource.=
  Cf. OMA LWM2M.
> (They also do define a firmware update mechanism, but that seems to pre=
sume the device has space for a complete firmware image.)

That is exactly the question I raised when it comes to network management=
=2E

I don't understand what network management protocol add beyond what is
already there with CoAP.

Of course, you could replace CoAP entirely with SNMP (as Juergen had
suggested).


>=20
> Replacing the software that is running during the software update is th=
e fun part, and that is somewhat expensive to support (add the requiremen=
t for a rollback capability for a realistic scenario).
>=20
Sure. Software updates are not fun.

>> You also cannot omit EAP/PANA from that list since many devices will
>> likely need to have a way to authenticate to the network.
>=20
> If you want to do this the SEP2.0 way, you need EAP/PANA.
> (SEP2.0 is targeting class-2+, not class-1.)

With devices that are in direct connection with each other you could
argue that there is no need for DTLS and alike since you will have to
deal with the pairing procedure at the lower layer. Many devices fall
into that category.

If that's not the case I believe you cannot assume that no network
access authentication will be needed.

Ciao
Hannes


>=20
> Gr=FC=DFe, Carsten
>=20


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From nobody Fri Apr  4 05:17:20 2014
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Subject: Re: [coman] Device Classes?
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Hi Anuj,

Thanks for the feedback. Your data confirmed my guess.

To me it would make sense to make different assumptions about end
devices and routers since they have different requirements. For a router
I might even be convinced that network management protocols are useful
but I am not at all convinced that end devices should run them.

Also, as I argued on other lists before I see a lot of overlap between

* network management when also used to retrieve the actual data of the
application (+ the management of the software)

* CoAP

(when a software update mechanism has to be implemented anyway).

If we ever want any interoperability then the approach of letting
thousand flowers bloom isn't going to work very well.

Sometimes saying "no" to some protocols is a good thing. (Btw, I am also
included to say no to all the IPsec/IKEv2 efforts for constrained devices=
=2E)

Ciao
Hannes

On 04/04/2014 11:55 AM, Sehgal, Anuj wrote:
> Hi,
>=20
> I have on several occasions used Contiki to implement applications usin=
g some combination of the following stack on Class 1 devices (TelosB):
>=20
>> I wonder whether someone has tried to implement a router with
>> * an IPv6 stack
>> * RPL
>> * network management protocol (as Thomas was asking for)
>> * CoAP
>> * + the actual application
>=20
> After fitting all this in, there really is no space left for security (=
DTLS, etc.).=20
>=20
> Fitting DNS should not be too complicated provided we knock off somethi=
ng from this list (either CoAP or network management protocol, SNMP in ou=
r case), but I say this based on experience with an mDNS implementation w=
e did a few years ago that works on AVR Raven devices (closer to Class 2)=
=2E=20
>=20
> In general, a basic Contiki 2.6 system (minus CoAP from above) takes up=
 about 85% of Flash and statically allocated RAM on a TelosB (Class 1). A=
dding CoAP and a network management protocol will push this further, with=
 nearly no space left. In fact, if the data model is too large or complic=
ated for the network management protocol, then chances are that it too wo=
uld not fit either. Similar constraints apply to CoAP as well. Working wi=
th CoAP up to Contiki 2.6, while using TelosB (Class 1), was also quite a=
 struggle. At best we were able to work with a handful of resources, sinc=
e the amount of memory left over was not too much.
>=20
> I have not checked while writing this email, but at least in the past i=
t was the RPL implementation that would take a significant amount of reso=
urces. This was largely due to non-storing mode not being implemented, bu=
t it would seem that Contiki 2.7 does have the option to enable non-stori=
ng mode. This might help reduce resource consumption further.
>=20
> When we attempted an implementation of DTLS, we used the AVR Raven (Cla=
ss 2) because TelosB (Class 1) did not have enough resources to function =
with it.
>=20
> Regards,
> Anuj
>=20
>> On 04/04/2014 09:24 AM, Carsten Bormann wrote:
>>> On 02 Apr 2014, at 09:43, Hannes Tschofenig <hannes.tschofenig@gmx.ne=
t> wrote:
>>>
>>>> IMHO these classes are about end devices rather than constrained rou=
ters
>>>> and switches.
>>>
>>> Actually, the device classes are about nodes in general (hosts and ro=
uters).  The document then goes on to say:
>>>
>>>   (An alternative name, when the properties as a network node are not=

>>>   in focus, is "constrained device=94.)
>>>
>>> Protocols such as RPL take great care to enable the use of class-1 de=
vices as routers (non-storing mode).
>>> Constrained management will need to match that.
>>>
>>> A more important dichotomy than host vs. router may be monitoring vs.=
 configuration.
>>>
>>> Gr=FC=DFe, Carsten
>>>
>>> _______________________________________________
>>> coman mailing list
>>> coman@ietf.org
>>> https://www.ietf.org/mailman/listinfo/coman
>>>
>>
>> _______________________________________________
>> coman mailing list
>> coman@ietf.org
>> https://www.ietf.org/mailman/listinfo/coman
>=20


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Subject: Re: [coman] Device Classes?
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On Fri, Apr 04, 2014 at 01:45:47PM +0200, Hannes Tschofenig wrote:
> 
> Of course, you could replace CoAP entirely with SNMP (as Juergen had
> suggested).
> 

I did not suggest to replace CoAP with SNMP. What I said is:

1) We have done an SNMP only implementation and we know it works and
   what the resource consumption is.

2) I see potential in a RESTCONF to CoAP mapping for devices that do
   CoAP.

3) I agree with the desire to keep code down to a minimum and thus to
   keep the number of protocols needed to a minimum.

4) In our experience, the biggest chunk of code and memory goes to
   security and in particular crypto algorithms. Being able to exploit
   crypto hardware is a major plus as is using the same security and
   crypto mechanisms for all protocols supported.

It would be really nice if we would all have a common understanding of
what roughly the code and storage requirements of the various
protocols involved are. Is LWIG producing something a kind of a survey
like this? If so, this would be great I think.

/js

-- 
Juergen Schoenwaelder           Jacobs University Bremen gGmbH
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From: Carsten Bormann <cabo@tzi.org>
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Subject: Re: [coman] Device Classes?
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On 04 Apr 2014, at 13:45, Hannes Tschofenig <hannes.tschofenig@gmx.net> =
wrote:

> Hi Carsten.
>=20
>=20
> On 04/04/2014 02:08 PM, Carsten Bormann wrote:
>> On 04 Apr 2014, at 13:32, Hannes Tschofenig =
<hannes.tschofenig@gmx.net> wrote:
>>=20
>>> For me the software update mechanism is extremely important since it =
is
>>> not just a way to replace the entire firmware but also to provision
>>> certain protocol parameters.
>>=20
>> Provisioning protocol parameters is one CoAP PUT to the right =
resource.  Cf. OMA LWM2M.
>> (They also do define a firmware update mechanism, but that seems to =
presume the device has space for a complete firmware image.)
>=20
> That is exactly the question I raised when it comes to network =
management.
>=20
> I don't understand what network management protocol add beyond what is
> already there with CoAP.

Assuming we continue to use the client-server model of network =
management, to use CoAP for this we need to define

1) What are the URIs that can be used for management?  How does the =
client learn them (combination of discovery, URI templates, HATEOAS)?

2) What are the representations being exchanged (data format, data =
modeling method).

3) What is the security model.

There has been a strong argument that we should not start from scratch =
with (2) (and probably not entirely with (1) either), even if we are not =
using the other parts of existing management protocols.

Proposals to address (1) and (2) are, for instance:
http://tools.ietf.org/html/draft-vanderstok-core-comi-03
http://www.tzi.de/~cabo/noms2014.pdf

(My assumption is that ACE will be good enough to cover (3); we=92ll =
have to make sure the lessons learned from management security go into =
ACE.)

> Of course, you could replace CoAP entirely with SNMP

SNMP is a bit more specialized and will not fit all applications that =
CoAP is designed to cover.
But, yes, SNMP has been used successfully as an application protocol in =
certain environments.

>> If you want to do this the SEP2.0 way, you need EAP/PANA.
>> (SEP2.0 is targeting class-2+, not class-1.)
>=20
> With devices that are in direct connection with each other you could
> argue that there is no need for DTLS and alike since you will have to
> deal with the pairing procedure at the lower layer. Many devices fall
> into that category.

(Defining single-hop security only is not very useful for the Internet =
of Things.)

> If that's not the case I believe you cannot assume that no network
> access authentication will be needed.

Indeed, most wireless networks will need network access control. =20
Maybe there are ways to authorize (!) access to a network that are more =
appropriate for the Internet of Things.
But this is outside the scope of COMAN.

Gr=FC=DFe, Carsten


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From: Andy Bierman <andy@yumaworks.com>
To: Carsten Bormann <cabo@tzi.org>
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Subject: Re: [coman] Device Classes?
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--001a11c0f5f6979d8004f6408c1e
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On Fri, Apr 4, 2014 at 6:49 AM, Carsten Bormann <cabo@tzi.org> wrote:

>
> On 04 Apr 2014, at 13:45, Hannes Tschofenig <hannes.tschofenig@gmx.net>
> wrote:
>
> > Hi Carsten.
> >
> >
> > On 04/04/2014 02:08 PM, Carsten Bormann wrote:
> >> On 04 Apr 2014, at 13:32, Hannes Tschofenig <hannes.tschofenig@gmx.net=
>
> wrote:
> >>
> >>> For me the software update mechanism is extremely important since it =
is
> >>> not just a way to replace the entire firmware but also to provision
> >>> certain protocol parameters.
> >>
> >> Provisioning protocol parameters is one CoAP PUT to the right resource=
.
>  Cf. OMA LWM2M.
> >> (They also do define a firmware update mechanism, but that seems to
> presume the device has space for a complete firmware image.)
> >
> > That is exactly the question I raised when it comes to network
> management.
> >
> > I don't understand what network management protocol add beyond what is
> > already there with CoAP.
>
> Assuming we continue to use the client-server model of network management=
,
> to use CoAP for this we need to define
>
> 1) What are the URIs that can be used for management?  How does the clien=
t
> learn them (combination of discovery, URI templates, HATEOAS)?
>
> 2) What are the representations being exchanged (data format, data
> modeling method).
>
>
RESTCONF addresses (1) and (2).
It replaces HATEOAS with YANG in order to be extensible,
modular, and predictable. The target use-case is programmatic
control.  HATEOAS seems more appropriate when human eyeballs and
brain power are part of the state machine.

IMO YANG would be a better long-term decision than SMIv2.
It may seem that features like custom operations are too
heavy-weight and over-kill for constrained networks, but it
could be just the opposite.  Custom operations allow expensive
generic operations to be condensed and 'packaged' to be as
small as possible.




> 3) What is the security model.
>
> There has been a strong argument that we should not start from scratch
> with (2) (and probably not entirely with (1) either), even if we are not
> using the other parts of existing management protocols.
>
> Proposals to address (1) and (2) are, for instance:
> http://tools.ietf.org/html/draft-vanderstok-core-comi-03
> http://www.tzi.de/~cabo/noms2014.pdf
>
> (My assumption is that ACE will be good enough to cover (3); we'll have t=
o
> make sure the lessons learned from management security go into ACE.)
>
> > Of course, you could replace CoAP entirely with SNMP
>
> SNMP is a bit more specialized and will not fit all applications that CoA=
P
> is designed to cover.
> But, yes, SNMP has been used successfully as an application protocol in
> certain environments.
>
> >> If you want to do this the SEP2.0 way, you need EAP/PANA.
> >> (SEP2.0 is targeting class-2+, not class-1.)
> >
> > With devices that are in direct connection with each other you could
> > argue that there is no need for DTLS and alike since you will have to
> > deal with the pairing procedure at the lower layer. Many devices fall
> > into that category.
>
> (Defining single-hop security only is not very useful for the Internet of
> Things.)
>
> > If that's not the case I believe you cannot assume that no network
> > access authentication will be needed.
>
> Indeed, most wireless networks will need network access control.
> Maybe there are ways to authorize (!) access to a network that are more
> appropriate for the Internet of Things.
> But this is outside the scope of COMAN.
>
> Gr=FC=DFe, Carsten
>
>

Andy

--001a11c0f5f6979d8004f6408c1e
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<div dir=3D"ltr"><br><div class=3D"gmail_extra"><br><br><div class=3D"gmail=
_quote">On Fri, Apr 4, 2014 at 6:49 AM, Carsten Bormann <span dir=3D"ltr">&=
lt;<a href=3D"mailto:cabo@tzi.org" target=3D"_blank">cabo@tzi.org</a>&gt;</=
span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><br>
On 04 Apr 2014, at 13:45, Hannes Tschofenig &lt;<a href=3D"mailto:hannes.ts=
chofenig@gmx.net">hannes.tschofenig@gmx.net</a>&gt; wrote:<br>
<br>
&gt; Hi Carsten.<br>
&gt;<br>
&gt;<br>
&gt; On 04/04/2014 02:08 PM, Carsten Bormann wrote:<br>
&gt;&gt; On 04 Apr 2014, at 13:32, Hannes Tschofenig &lt;<a href=3D"mailto:=
hannes.tschofenig@gmx.net">hannes.tschofenig@gmx.net</a>&gt; wrote:<br>
&gt;&gt;<br>
&gt;&gt;&gt; For me the software update mechanism is extremely important si=
nce it is<br>
&gt;&gt;&gt; not just a way to replace the entire firmware but also to prov=
ision<br>
&gt;&gt;&gt; certain protocol parameters.<br>
&gt;&gt;<br>
&gt;&gt; Provisioning protocol parameters is one CoAP PUT to the right reso=
urce. &nbsp;Cf. OMA LWM2M.<br>
&gt;&gt; (They also do define a firmware update mechanism, but that seems t=
o presume the device has space for a complete firmware image.)<br>
&gt;<br>
&gt; That is exactly the question I raised when it comes to network managem=
ent.<br>
&gt;<br>
&gt; I don&#39;t understand what network management protocol add beyond wha=
t is<br>
&gt; already there with CoAP.<br>
<br>
Assuming we continue to use the client-server model of network management, =
to use CoAP for this we need to define<br>
<br>
1) What are the URIs that can be used for management? &nbsp;How does the cl=
ient learn them (combination of discovery, URI templates, HATEOAS)?<br>
<br>
2) What are the representations being exchanged (data format, data modeling=
 method).<br>
<br></blockquote><div><br></div><div>RESTCONF addresses (1) and (2).</div><=
div>It replaces HATEOAS with YANG in order to be extensible,</div><div>modu=
lar, and predictable. The target use-case is programmatic</div><div>control=
. &nbsp;HATEOAS seems more appropriate when human eyeballs and</div>
<div>brain power are part of the state machine.</div><div><br></div><div>IM=
O YANG would be a better long-term decision than SMIv2.</div><div>It may se=
em that features like custom operations are too</div><div>heavy-weight and =
over-kill for constrained networks, but it</div>
<div>could be just the opposite. &nbsp;Custom operations allow expensive</d=
iv><div>generic operations to be condensed and &#39;packaged&#39; to be as<=
/div><div>small as possible.</div><div><br></div><div><br></div><div>&nbsp;=
<br></div>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
3) What is the security model.<br>
<br>
There has been a strong argument that we should not start from scratch with=
 (2) (and probably not entirely with (1) either), even if we are not using =
the other parts of existing management protocols.<br>
<br>
Proposals to address (1) and (2) are, for instance:<br>
<a href=3D"http://tools.ietf.org/html/draft-vanderstok-core-comi-03" target=
=3D"_blank">http://tools.ietf.org/html/draft-vanderstok-core-comi-03</a><br=
>
<a href=3D"http://www.tzi.de/~cabo/noms2014.pdf" target=3D"_blank">http://w=
ww.tzi.de/~cabo/noms2014.pdf</a><br>
<br>
(My assumption is that ACE will be good enough to cover (3); we&rsquo;ll ha=
ve to make sure the lessons learned from management security go into ACE.)<=
br>
<br>
&gt; Of course, you could replace CoAP entirely with SNMP<br>
<br>
SNMP is a bit more specialized and will not fit all applications that CoAP =
is designed to cover.<br>
But, yes, SNMP has been used successfully as an application protocol in cer=
tain environments.<br>
<br>
&gt;&gt; If you want to do this the SEP2.0 way, you need EAP/PANA.<br>
&gt;&gt; (SEP2.0 is targeting class-2+, not class-1.)<br>
&gt;<br>
&gt; With devices that are in direct connection with each other you could<b=
r>
&gt; argue that there is no need for DTLS and alike since you will have to<=
br>
&gt; deal with the pairing procedure at the lower layer. Many devices fall<=
br>
&gt; into that category.<br>
<br>
(Defining single-hop security only is not very useful for the Internet of T=
hings.)<br>
<br>
&gt; If that&#39;s not the case I believe you cannot assume that no network=
<br>
&gt; access authentication will be needed.<br>
<br>
Indeed, most wireless networks will need network access control.<br>
Maybe there are ways to authorize (!) access to a network that are more app=
ropriate for the Internet of Things.<br>
But this is outside the scope of COMAN.<br>
<br>
Gr=FC=DFe, Carsten<br>
<br></blockquote><div><br></div><div><br></div><div>Andy</div><div><br></di=
v></div></div></div>

--001a11c0f5f6979d8004f6408c1e--


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From: Thomas Watteyne <watteyne@eecs.berkeley.edu>
Date: Fri, 4 Apr 2014 21:01:16 -0700
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Subject: Re: [coman] Device Classes?
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Andy, all,

If CoAP is already in nodes for the applications running on, you have a
monitoring/management solution almost for free. Want to monitoring the
state of some attribute of your protocol? Use CoAP observe. Want to change
a parameter of your protocol? CoAP PUT. On top of that, the work from
CORE/DICE/DTLS/ACE, will ensure security, including authentication and
authorization of management entities.

For nodes where CoAP is present for the application, proposing an
additional protocol will be a very hard sell.

Of course, as pointed out by Carsten, we need to agree on the resources.
What is the URI, what methods are supported, what's the payload format,
etc. YANG is a data modeling language which enables exactly that. RESTCONF
has a RESTful approach to monitoring/management which is aligned with CoAP.
What we would need is a constrained version of RESTCONF. This could be (and
should be) very simple.

At 6TiSCH, we have started this work, with YANG based data model [1] and a
CoAP-based protocol built around that [2], any URI starting with "/6t" is
to monitoring and manage the 6top sublayer. I believe there would be a huge
benefit to having a more general solution, to which we all agree, i.e. a
CoAPified version of RESTCONF. COMAN looks like the right place to do this.

Thomas

[1] http://tools.ietf.org/html/draft-ietf-6tisch-6top-interface-00
[2] http://tools.ietf.org/html/draft-sudhaakar-6tisch-coap-01


On Fri, Apr 4, 2014 at 5:16 PM, Andy Bierman <andy@yumaworks.com> wrote:

>
>
>
> On Fri, Apr 4, 2014 at 6:49 AM, Carsten Bormann <cabo@tzi.org> wrote:
>
>>
>> On 04 Apr 2014, at 13:45, Hannes Tschofenig <hannes.tschofenig@gmx.net>
>> wrote:
>>
>> > Hi Carsten.
>> >
>> >
>> > On 04/04/2014 02:08 PM, Carsten Bormann wrote:
>> >> On 04 Apr 2014, at 13:32, Hannes Tschofenig <hannes.tschofenig@gmx.ne=
t>
>> wrote:
>> >>
>> >>> For me the software update mechanism is extremely important since it
>> is
>> >>> not just a way to replace the entire firmware but also to provision
>> >>> certain protocol parameters.
>> >>
>> >> Provisioning protocol parameters is one CoAP PUT to the right
>> resource.  Cf. OMA LWM2M.
>> >> (They also do define a firmware update mechanism, but that seems to
>> presume the device has space for a complete firmware image.)
>> >
>> > That is exactly the question I raised when it comes to network
>> management.
>> >
>> > I don't understand what network management protocol add beyond what is
>> > already there with CoAP.
>>
>> Assuming we continue to use the client-server model of network
>> management, to use CoAP for this we need to define
>>
>> 1) What are the URIs that can be used for management?  How does the
>> client learn them (combination of discovery, URI templates, HATEOAS)?
>>
>> 2) What are the representations being exchanged (data format, data
>> modeling method).
>>
>>
> RESTCONF addresses (1) and (2).
> It replaces HATEOAS with YANG in order to be extensible,
> modular, and predictable. The target use-case is programmatic
> control.  HATEOAS seems more appropriate when human eyeballs and
> brain power are part of the state machine.
>
> IMO YANG would be a better long-term decision than SMIv2.
> It may seem that features like custom operations are too
> heavy-weight and over-kill for constrained networks, but it
> could be just the opposite.  Custom operations allow expensive
> generic operations to be condensed and 'packaged' to be as
> small as possible.
>
>
>
>
>> 3) What is the security model.
>>
>> There has been a strong argument that we should not start from scratch
>> with (2) (and probably not entirely with (1) either), even if we are not
>> using the other parts of existing management protocols.
>>
>> Proposals to address (1) and (2) are, for instance:
>> http://tools.ietf.org/html/draft-vanderstok-core-comi-03
>> http://www.tzi.de/~cabo/noms2014.pdf
>>
>> (My assumption is that ACE will be good enough to cover (3); we'll have
>> to make sure the lessons learned from management security go into ACE.)
>>
>> > Of course, you could replace CoAP entirely with SNMP
>>
>> SNMP is a bit more specialized and will not fit all applications that
>> CoAP is designed to cover.
>> But, yes, SNMP has been used successfully as an application protocol in
>> certain environments.
>>
>> >> If you want to do this the SEP2.0 way, you need EAP/PANA.
>> >> (SEP2.0 is targeting class-2+, not class-1.)
>> >
>> > With devices that are in direct connection with each other you could
>> > argue that there is no need for DTLS and alike since you will have to
>> > deal with the pairing procedure at the lower layer. Many devices fall
>> > into that category.
>>
>> (Defining single-hop security only is not very useful for the Internet o=
f
>> Things.)
>>
>> > If that's not the case I believe you cannot assume that no network
>> > access authentication will be needed.
>>
>> Indeed, most wireless networks will need network access control.
>> Maybe there are ways to authorize (!) access to a network that are more
>> appropriate for the Internet of Things.
>> But this is outside the scope of COMAN.
>>
>> Gr=FC=DFe, Carsten
>>
>>
>
> Andy
>
>
> _______________________________________________
> coman mailing list
> coman@ietf.org
> https://www.ietf.org/mailman/listinfo/coman
>
>

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<div dir=3D"ltr">Andy, all,<div><br></div><div>If CoAP is already in nodes =
for the applications running on, you have a monitoring/management solution =
almost for free. Want to monitoring the state of some attribute of your pro=
tocol? Use CoAP observe. Want to change a parameter of your protocol? CoAP =
PUT. On top of that, the work from CORE/DICE/DTLS/ACE, will ensure security=
, including authentication and authorization of management entities.</div>

<div><br></div><div>For nodes where CoAP is present for the application, pr=
oposing an additional protocol will be a very hard sell.</div><div><br></di=
v><div>Of course, as pointed out by Carsten, we need to agree on the resour=
ces. What is the URI, what methods are supported, what&#39;s the payload fo=
rmat, etc. YANG is a data modeling language which enables exactly that. RES=
TCONF has a RESTful approach to monitoring/management which is aligned with=
 CoAP. What we would need is a constrained version of RESTCONF. This could =
be (and should be) very simple.</div>

<div><br></div><div>At 6TiSCH, we have started this work, with YANG based d=
ata model [1] and a CoAP-based protocol built around that [2], any URI star=
ting with &quot;/6t&quot; is to monitoring and manage the 6top sublayer. I =
believe there would be a huge benefit to having a more general solution, to=
 which we all agree, i.e. a CoAPified version of RESTCONF. COMAN looks like=
 the right place to do this.</div>

<div><br></div><div>Thomas</div><div><br></div><div>[1]&nbsp;<a href=3D"htt=
p://tools.ietf.org/html/draft-ietf-6tisch-6top-interface-00">http://tools.i=
etf.org/html/draft-ietf-6tisch-6top-interface-00</a></div><div>[2]&nbsp;<a =
href=3D"http://tools.ietf.org/html/draft-sudhaakar-6tisch-coap-01">http://t=
ools.ietf.org/html/draft-sudhaakar-6tisch-coap-01</a></div>

</div><div class=3D"gmail_extra"><br><br><div class=3D"gmail_quote">On Fri,=
 Apr 4, 2014 at 5:16 PM, Andy Bierman <span dir=3D"ltr">&lt;<a href=3D"mail=
to:andy@yumaworks.com" target=3D"_blank">andy@yumaworks.com</a>&gt;</span> =
wrote:<br>

<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><div dir=3D"ltr"><br><div class=3D"gmail_ext=
ra"><br><br><div class=3D"gmail_quote"><div class=3D"">On Fri, Apr 4, 2014 =
at 6:49 AM, Carsten Bormann <span dir=3D"ltr">&lt;<a href=3D"mailto:cabo@tz=
i.org" target=3D"_blank">cabo@tzi.org</a>&gt;</span> wrote:<br>


<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><br>
On 04 Apr 2014, at 13:45, Hannes Tschofenig &lt;<a href=3D"mailto:hannes.ts=
chofenig@gmx.net" target=3D"_blank">hannes.tschofenig@gmx.net</a>&gt; wrote=
:<br>
<br>
&gt; Hi Carsten.<br>
&gt;<br>
&gt;<br>
&gt; On 04/04/2014 02:08 PM, Carsten Bormann wrote:<br>
&gt;&gt; On 04 Apr 2014, at 13:32, Hannes Tschofenig &lt;<a href=3D"mailto:=
hannes.tschofenig@gmx.net" target=3D"_blank">hannes.tschofenig@gmx.net</a>&=
gt; wrote:<br>
&gt;&gt;<br>
&gt;&gt;&gt; For me the software update mechanism is extremely important si=
nce it is<br>
&gt;&gt;&gt; not just a way to replace the entire firmware but also to prov=
ision<br>
&gt;&gt;&gt; certain protocol parameters.<br>
&gt;&gt;<br>
&gt;&gt; Provisioning protocol parameters is one CoAP PUT to the right reso=
urce. &nbsp;Cf. OMA LWM2M.<br>
&gt;&gt; (They also do define a firmware update mechanism, but that seems t=
o presume the device has space for a complete firmware image.)<br>
&gt;<br>
&gt; That is exactly the question I raised when it comes to network managem=
ent.<br>
&gt;<br>
&gt; I don&#39;t understand what network management protocol add beyond wha=
t is<br>
&gt; already there with CoAP.<br>
<br>
Assuming we continue to use the client-server model of network management, =
to use CoAP for this we need to define<br>
<br>
1) What are the URIs that can be used for management? &nbsp;How does the cl=
ient learn them (combination of discovery, URI templates, HATEOAS)?<br>
<br>
2) What are the representations being exchanged (data format, data modeling=
 method).<br>
<br></blockquote><div><br></div></div><div>RESTCONF addresses (1) and (2).<=
/div><div>It replaces HATEOAS with YANG in order to be extensible,</div><di=
v>modular, and predictable. The target use-case is programmatic</div><div>

control. &nbsp;HATEOAS seems more appropriate when human eyeballs and</div>
<div>brain power are part of the state machine.</div><div><br></div><div>IM=
O YANG would be a better long-term decision than SMIv2.</div><div>It may se=
em that features like custom operations are too</div><div>heavy-weight and =
over-kill for constrained networks, but it</div>


<div>could be just the opposite. &nbsp;Custom operations allow expensive</d=
iv><div>generic operations to be condensed and &#39;packaged&#39; to be as<=
/div><div>small as possible.</div><div class=3D""><div><br></div><div><br><=
/div>

<div>&nbsp;<br></div>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
3) What is the security model.<br>
<br>
There has been a strong argument that we should not start from scratch with=
 (2) (and probably not entirely with (1) either), even if we are not using =
the other parts of existing management protocols.<br>
<br>
Proposals to address (1) and (2) are, for instance:<br>
<a href=3D"http://tools.ietf.org/html/draft-vanderstok-core-comi-03" target=
=3D"_blank">http://tools.ietf.org/html/draft-vanderstok-core-comi-03</a><br=
>
<a href=3D"http://www.tzi.de/~cabo/noms2014.pdf" target=3D"_blank">http://w=
ww.tzi.de/~cabo/noms2014.pdf</a><br>
<br>
(My assumption is that ACE will be good enough to cover (3); we&rsquo;ll ha=
ve to make sure the lessons learned from management security go into ACE.)<=
br>
<br>
&gt; Of course, you could replace CoAP entirely with SNMP<br>
<br>
SNMP is a bit more specialized and will not fit all applications that CoAP =
is designed to cover.<br>
But, yes, SNMP has been used successfully as an application protocol in cer=
tain environments.<br>
<br>
&gt;&gt; If you want to do this the SEP2.0 way, you need EAP/PANA.<br>
&gt;&gt; (SEP2.0 is targeting class-2+, not class-1.)<br>
&gt;<br>
&gt; With devices that are in direct connection with each other you could<b=
r>
&gt; argue that there is no need for DTLS and alike since you will have to<=
br>
&gt; deal with the pairing procedure at the lower layer. Many devices fall<=
br>
&gt; into that category.<br>
<br>
(Defining single-hop security only is not very useful for the Internet of T=
hings.)<br>
<br>
&gt; If that&#39;s not the case I believe you cannot assume that no network=
<br>
&gt; access authentication will be needed.<br>
<br>
Indeed, most wireless networks will need network access control.<br>
Maybe there are ways to authorize (!) access to a network that are more app=
ropriate for the Internet of Things.<br>
But this is outside the scope of COMAN.<br>
<br>
Gr=FC=DFe, Carsten<br>
<br></blockquote><div><br></div><div><br></div></div><span class=3D"HOEnZb"=
><font color=3D"#888888"><div>Andy</div><div><br></div></font></span></div>=
</div></div>
<br>_______________________________________________<br>
coman mailing list<br>
<a href=3D"mailto:coman@ietf.org">coman@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/coman" target=3D"_blank">h=
ttps://www.ietf.org/mailman/listinfo/coman</a><br>
<br></blockquote></div><br></div>

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Subject: Re: [coman] Device Classes?
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On Fri, Apr 04, 2014 at 09:01:16PM -0700, Thomas Watteyne wrote:
> 
> At 6TiSCH, we have started this work, with YANG based data model [1] and a
> CoAP-based protocol built around that [2], any URI starting with "/6t" is
> to monitoring and manage the 6top sublayer. I believe there would be a huge
> benefit to having a more general solution, to which we all agree, i.e. a
> CoAPified version of RESTCONF. COMAN looks like the right place to do this.
> 

Well, what you have in [1] is not really YANG and surely not RESTCONF
either. I think [1] essentially illustrates that having no agreement
(or standard) how to do NM in this space is a problem. Don't get me
wrong, I appreciate the direction of this work but claiming it is a
YANG based data model I think is not quite right.

/js

-- 
Juergen Schoenwaelder           Jacobs University Bremen gGmbH
Phone: +49 421 200 3587         Campus Ring 1, 28759 Bremen, Germany
Fax:   +49 421 200 3103         <http://www.jacobs-university.de/>


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Subject: Re: [coman] Device Classes?
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Juergen,
The goal of this -00 is to kick things off and spark interest beyond
6TiSCH, especially in COMAN. Glad to see this worked and that you agree
with the general direction.
One of 6TiSCH's milestones for August 2014 is to ask for help from "YANG
people". Could I ask you to provide feedback to the authors or the 6TiSCH
ML? The 6top authors are holding a ad-hoc webex discussion on Tuesday [1],
maybe a good first venue for feedback.
Please note that [2] was written specifically because there is
no constrained version of RESTCONF. It doesn't claim to be that, and, if
there were such a thing, we'd be more than happy to consider it.
Thomas

[1] http://www.ietf.org/mail-archive/web/6tisch/current/msg02114.html


On Fri, Apr 4, 2014 at 11:07 PM, Juergen Schoenwaelder <
j.schoenwaelder@jacobs-university.de> wrote:

> On Fri, Apr 04, 2014 at 09:01:16PM -0700, Thomas Watteyne wrote:
> >
> > At 6TiSCH, we have started this work, with YANG based data model [1] and
> a
> > CoAP-based protocol built around that [2], any URI starting with "/6t" is
> > to monitoring and manage the 6top sublayer. I believe there would be a
> huge
> > benefit to having a more general solution, to which we all agree, i.e. a
> > CoAPified version of RESTCONF. COMAN looks like the right place to do
> this.
> >
>
> Well, what you have in [1] is not really YANG and surely not RESTCONF
> either. I think [1] essentially illustrates that having no agreement
> (or standard) how to do NM in this space is a problem. Don't get me
> wrong, I appreciate the direction of this work but claiming it is a
> YANG based data model I think is not quite right.
>
> /js
>
> --
> Juergen Schoenwaelder           Jacobs University Bremen gGmbH
> Phone: +49 421 200 3587         Campus Ring 1, 28759 Bremen, Germany
> Fax:   +49 421 200 3103         <http://www.jacobs-university.de/>
>

--047d7b2e0ddf165d9d04f6462f3a
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Juergen,<div><div style>The goal of this -00 is to kick th=
ings off and spark interest beyond 6TiSCH, especially in COMAN. Glad to see=
 this worked and that you agree with the general direction.</div><div style=
>

One of 6TiSCH&#39;s milestones for August 2014 is to ask for help from &quo=
t;YANG people&quot;. Could I ask you to provide feedback to the authors or =
the 6TiSCH ML? The 6top authors are holding a ad-hoc webex discussion on Tu=
esday [1], maybe a good first venue for feedback.</div>

<div style>Please note that [2] was written specifically because there is n=
o=A0constrained=A0version of RESTCONF. It doesn&#39;t claim to be that, and=
, if there were such a thing, we&#39;d be more than happy to consider it.</=
div>

<div style>Thomas</div><div style><br></div><div style>[1]=A0<a href=3D"htt=
p://www.ietf.org/mail-archive/web/6tisch/current/msg02114.html">http://www.=
ietf.org/mail-archive/web/6tisch/current/msg02114.html</a></div></div></div=
>

<div class=3D"gmail_extra"><br><br><div class=3D"gmail_quote">On Fri, Apr 4=
, 2014 at 11:07 PM, Juergen Schoenwaelder <span dir=3D"ltr">&lt;<a href=3D"=
mailto:j.schoenwaelder@jacobs-university.de" target=3D"_blank">j.schoenwael=
der@jacobs-university.de</a>&gt;</span> wrote:<br>

<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><div class=3D"">On Fri, Apr 04, 2014 at 09:0=
1:16PM -0700, Thomas Watteyne wrote:<br>
&gt;<br>
&gt; At 6TiSCH, we have started this work, with YANG based data model [1] a=
nd a<br>
&gt; CoAP-based protocol built around that [2], any URI starting with &quot=
;/6t&quot; is<br>
&gt; to monitoring and manage the 6top sublayer. I believe there would be a=
 huge<br>
&gt; benefit to having a more general solution, to which we all agree, i.e.=
 a<br>
&gt; CoAPified version of RESTCONF. COMAN looks like the right place to do =
this.<br>
&gt;<br>
<br>
</div>Well, what you have in [1] is not really YANG and surely not RESTCONF=
<br>
either. I think [1] essentially illustrates that having no agreement<br>
(or standard) how to do NM in this space is a problem. Don&#39;t get me<br>
wrong, I appreciate the direction of this work but claiming it is a<br>
YANG based data model I think is not quite right.<br>
<div class=3D"HOEnZb"><div class=3D"h5"><br>
/js<br>
<br>
--<br>
Juergen Schoenwaelder =A0 =A0 =A0 =A0 =A0 Jacobs University Bremen gGmbH<br=
>
Phone: <a href=3D"tel:%2B49%20421%20200%203587" value=3D"+494212003587">+49=
 421 200 3587</a> =A0 =A0 =A0 =A0 Campus Ring 1, 28759 Bremen, Germany<br>
Fax: =A0 <a href=3D"tel:%2B49%20421%20200%203103" value=3D"+494212003103">+=
49 421 200 3103</a> =A0 =A0 =A0 =A0 &lt;<a href=3D"http://www.jacobs-univer=
sity.de/" target=3D"_blank">http://www.jacobs-university.de/</a>&gt;<br>
</div></div></blockquote></div><br></div>

--047d7b2e0ddf165d9d04f6462f3a--


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From: Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>
To: Thomas Watteyne <watteyne@eecs.berkeley.edu>
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Subject: Re: [coman] Device Classes?
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Thomas,

I know pretty much nothing about 6TiSCH. But you should definately
write a complete YANG data model so that tools can be used. You need
to distinguish configuration from state. The term "MIB" does not exist
in the YANG world - or what is the 6top MIB? Since I do not have
IEEE802154e, I can't really make much sense of things (descriptions
like "Defined in IEEE802154e." don't help much).

I am not understanding what 6top commands are (defined by IEEE?) and
how they relate to the YANG fragments. Are you re-modeling command
frames coming from IEEE? If so, what is the value of this? If there is
value in this, why do you not use YANG defined rpcs? In short, I am
confused what problem this document and the YANG fragment are trying
to solve. To me, it looks like you are remodeling 6top and it is
unclear what the value of this is. A section more clearly describing
what the problem is to be solved and how the data model is intended
to be used would be useful.

I won't be able to join the Webex (and I have enough other things I am
late with already...).

/js

On Fri, Apr 04, 2014 at 11:59:44PM -0700, Thomas Watteyne wrote:
> Juergen,
> The goal of this -00 is to kick things off and spark interest beyond
> 6TiSCH, especially in COMAN. Glad to see this worked and that you agree
> with the general direction.
> One of 6TiSCH's milestones for August 2014 is to ask for help from "YANG
> people". Could I ask you to provide feedback to the authors or the 6TiSCH
> ML? The 6top authors are holding a ad-hoc webex discussion on Tuesday [1],
> maybe a good first venue for feedback.
> Please note that [2] was written specifically because there is
> no constrained version of RESTCONF. It doesn't claim to be that, and, if
> there were such a thing, we'd be more than happy to consider it.
> Thomas
> 
> [1] http://www.ietf.org/mail-archive/web/6tisch/current/msg02114.html
> 
> 
> On Fri, Apr 4, 2014 at 11:07 PM, Juergen Schoenwaelder <
> j.schoenwaelder@jacobs-university.de> wrote:
> 
> > On Fri, Apr 04, 2014 at 09:01:16PM -0700, Thomas Watteyne wrote:
> > >
> > > At 6TiSCH, we have started this work, with YANG based data model [1] and
> > a
> > > CoAP-based protocol built around that [2], any URI starting with "/6t" is
> > > to monitoring and manage the 6top sublayer. I believe there would be a
> > huge
> > > benefit to having a more general solution, to which we all agree, i.e. a
> > > CoAPified version of RESTCONF. COMAN looks like the right place to do
> > this.
> > >
> >
> > Well, what you have in [1] is not really YANG and surely not RESTCONF
> > either. I think [1] essentially illustrates that having no agreement
> > (or standard) how to do NM in this space is a problem. Don't get me
> > wrong, I appreciate the direction of this work but claiming it is a
> > YANG based data model I think is not quite right.
> >
> > /js
> >
> > --
> > Juergen Schoenwaelder           Jacobs University Bremen gGmbH
> > Phone: +49 421 200 3587         Campus Ring 1, 28759 Bremen, Germany
> > Fax:   +49 421 200 3103         <http://www.jacobs-university.de/>
> >

-- 
Juergen Schoenwaelder           Jacobs University Bremen gGmbH
Phone: +49 421 200 3587         Campus Ring 1, 28759 Bremen, Germany
Fax:   +49 421 200 3103         <http://www.jacobs-university.de/>


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To: Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>,  Thomas Watteyne <watteyne@eecs.berkeley.edu>, Andy Bierman <andy@yumaworks.com>, "coman@ietf.org" <coman@ietf.org>, Carsten Bormann <cabo@tzi.org>,  Hannes Tschofenig <hannes.tschofenig@gmx.net>, Qin Wang <wangqin@ies.ustb.edu.cn>, Pascal Thubert <pthubert@cisco.com>, Xavi Vilajosana <xvilajosana@eecs.berkeley.edu>
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Subject: Re: [coman] Device Classes?
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Juergen,
Thanks for the feedback.
Thomas


On Sat, Apr 5, 2014 at 12:16 AM, Juergen Schoenwaelder <
j.schoenwaelder@jacobs-university.de> wrote:

> Thomas,
>
> I know pretty much nothing about 6TiSCH. But you should definately
> write a complete YANG data model so that tools can be used. You need
> to distinguish configuration from state. The term "MIB" does not exist
> in the YANG world - or what is the 6top MIB? Since I do not have
> IEEE802154e, I can't really make much sense of things (descriptions
> like "Defined in IEEE802154e." don't help much).
>
> I am not understanding what 6top commands are (defined by IEEE?) and
> how they relate to the YANG fragments. Are you re-modeling command
> frames coming from IEEE? If so, what is the value of this? If there is
> value in this, why do you not use YANG defined rpcs? In short, I am
> confused what problem this document and the YANG fragment are trying
> to solve. To me, it looks like you are remodeling 6top and it is
> unclear what the value of this is. A section more clearly describing
> what the problem is to be solved and how the data model is intended
> to be used would be useful.
>
> I won't be able to join the Webex (and I have enough other things I am
> late with already...).
>
> /js
>
> On Fri, Apr 04, 2014 at 11:59:44PM -0700, Thomas Watteyne wrote:
> > Juergen,
> > The goal of this -00 is to kick things off and spark interest beyond
> > 6TiSCH, especially in COMAN. Glad to see this worked and that you agree
> > with the general direction.
> > One of 6TiSCH's milestones for August 2014 is to ask for help from "YANG
> > people". Could I ask you to provide feedback to the authors or the 6TiSCH
> > ML? The 6top authors are holding a ad-hoc webex discussion on Tuesday
> [1],
> > maybe a good first venue for feedback.
> > Please note that [2] was written specifically because there is
> > no constrained version of RESTCONF. It doesn't claim to be that, and, if
> > there were such a thing, we'd be more than happy to consider it.
> > Thomas
> >
> > [1] http://www.ietf.org/mail-archive/web/6tisch/current/msg02114.html
> >
> >
> > On Fri, Apr 4, 2014 at 11:07 PM, Juergen Schoenwaelder <
> > j.schoenwaelder@jacobs-university.de> wrote:
> >
> > > On Fri, Apr 04, 2014 at 09:01:16PM -0700, Thomas Watteyne wrote:
> > > >
> > > > At 6TiSCH, we have started this work, with YANG based data model [1]
> and
> > > a
> > > > CoAP-based protocol built around that [2], any URI starting with
> "/6t" is
> > > > to monitoring and manage the 6top sublayer. I believe there would be
> a
> > > huge
> > > > benefit to having a more general solution, to which we all agree,
> i.e. a
> > > > CoAPified version of RESTCONF. COMAN looks like the right place to do
> > > this.
> > > >
> > >
> > > Well, what you have in [1] is not really YANG and surely not RESTCONF
> > > either. I think [1] essentially illustrates that having no agreement
> > > (or standard) how to do NM in this space is a problem. Don't get me
> > > wrong, I appreciate the direction of this work but claiming it is a
> > > YANG based data model I think is not quite right.
> > >
> > > /js
> > >
> > > --
> > > Juergen Schoenwaelder           Jacobs University Bremen gGmbH
> > > Phone: +49 421 200 3587         Campus Ring 1, 28759 Bremen, Germany
> > > Fax:   +49 421 200 3103         <http://www.jacobs-university.de/>
> > >
>
> --
> Juergen Schoenwaelder           Jacobs University Bremen gGmbH
> Phone: +49 421 200 3587         Campus Ring 1, 28759 Bremen, Germany
> Fax:   +49 421 200 3103         <http://www.jacobs-university.de/>
>

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<div dir=3D"ltr">Juergen,<div style>Thanks for the feedback.</div><div styl=
e>Thomas</div></div><div class=3D"gmail_extra"><br><br><div class=3D"gmail_=
quote">On Sat, Apr 5, 2014 at 12:16 AM, Juergen Schoenwaelder <span dir=3D"=
ltr">&lt;<a href=3D"mailto:j.schoenwaelder@jacobs-university.de" target=3D"=
_blank">j.schoenwaelder@jacobs-university.de</a>&gt;</span> wrote:<br>

<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">Thomas,<br>
<br>
I know pretty much nothing about 6TiSCH. But you should definately<br>
write a complete YANG data model so that tools can be used. You need<br>
to distinguish configuration from state. The term &quot;MIB&quot; does not =
exist<br>
in the YANG world - or what is the 6top MIB? Since I do not have<br>
IEEE802154e, I can&#39;t really make much sense of things (descriptions<br>
like &quot;Defined in IEEE802154e.&quot; don&#39;t help much).<br>
<br>
I am not understanding what 6top commands are (defined by IEEE?) and<br>
how they relate to the YANG fragments. Are you re-modeling command<br>
frames coming from IEEE? If so, what is the value of this? If there is<br>
value in this, why do you not use YANG defined rpcs? In short, I am<br>
confused what problem this document and the YANG fragment are trying<br>
to solve. To me, it looks like you are remodeling 6top and it is<br>
unclear what the value of this is. A section more clearly describing<br>
what the problem is to be solved and how the data model is intended<br>
to be used would be useful.<br>
<br>
I won&#39;t be able to join the Webex (and I have enough other things I am<=
br>
late with already...).<br>
<span class=3D"HOEnZb"><font color=3D"#888888"><br>
/js<br>
</font></span><div class=3D"HOEnZb"><div class=3D"h5"><br>
On Fri, Apr 04, 2014 at 11:59:44PM -0700, Thomas Watteyne wrote:<br>
&gt; Juergen,<br>
&gt; The goal of this -00 is to kick things off and spark interest beyond<b=
r>
&gt; 6TiSCH, especially in COMAN. Glad to see this worked and that you agre=
e<br>
&gt; with the general direction.<br>
&gt; One of 6TiSCH&#39;s milestones for August 2014 is to ask for help from=
 &quot;YANG<br>
&gt; people&quot;. Could I ask you to provide feedback to the authors or th=
e 6TiSCH<br>
&gt; ML? The 6top authors are holding a ad-hoc webex discussion on Tuesday =
[1],<br>
&gt; maybe a good first venue for feedback.<br>
&gt; Please note that [2] was written specifically because there is<br>
&gt; no constrained version of RESTCONF. It doesn&#39;t claim to be that, a=
nd, if<br>
&gt; there were such a thing, we&#39;d be more than happy to consider it.<b=
r>
&gt; Thomas<br>
&gt;<br>
&gt; [1] <a href=3D"http://www.ietf.org/mail-archive/web/6tisch/current/msg=
02114.html" target=3D"_blank">http://www.ietf.org/mail-archive/web/6tisch/c=
urrent/msg02114.html</a><br>
&gt;<br>
&gt;<br>
&gt; On Fri, Apr 4, 2014 at 11:07 PM, Juergen Schoenwaelder &lt;<br>
&gt; <a href=3D"mailto:j.schoenwaelder@jacobs-university.de">j.schoenwaelde=
r@jacobs-university.de</a>&gt; wrote:<br>
&gt;<br>
&gt; &gt; On Fri, Apr 04, 2014 at 09:01:16PM -0700, Thomas Watteyne wrote:<=
br>
&gt; &gt; &gt;<br>
&gt; &gt; &gt; At 6TiSCH, we have started this work, with YANG based data m=
odel [1] and<br>
&gt; &gt; a<br>
&gt; &gt; &gt; CoAP-based protocol built around that [2], any URI starting =
with &quot;/6t&quot; is<br>
&gt; &gt; &gt; to monitoring and manage the 6top sublayer. I believe there =
would be a<br>
&gt; &gt; huge<br>
&gt; &gt; &gt; benefit to having a more general solution, to which we all a=
gree, i.e. a<br>
&gt; &gt; &gt; CoAPified version of RESTCONF. COMAN looks like the right pl=
ace to do<br>
&gt; &gt; this.<br>
&gt; &gt; &gt;<br>
&gt; &gt;<br>
&gt; &gt; Well, what you have in [1] is not really YANG and surely not REST=
CONF<br>
&gt; &gt; either. I think [1] essentially illustrates that having no agreem=
ent<br>
&gt; &gt; (or standard) how to do NM in this space is a problem. Don&#39;t =
get me<br>
&gt; &gt; wrong, I appreciate the direction of this work but claiming it is=
 a<br>
&gt; &gt; YANG based data model I think is not quite right.<br>
&gt; &gt;<br>
&gt; &gt; /js<br>
&gt; &gt;<br>
&gt; &gt; --<br>
&gt; &gt; Juergen Schoenwaelder =A0 =A0 =A0 =A0 =A0 Jacobs University Breme=
n gGmbH<br>
&gt; &gt; Phone: +49 421 200 3587 =A0 =A0 =A0 =A0 Campus Ring 1, 28759 Brem=
en, Germany<br>
&gt; &gt; Fax: =A0 +49 421 200 3103 =A0 =A0 =A0 =A0 &lt;<a href=3D"http://w=
ww.jacobs-university.de/" target=3D"_blank">http://www.jacobs-university.de=
/</a>&gt;<br>
&gt; &gt;<br>
<br>
--<br>
Juergen Schoenwaelder =A0 =A0 =A0 =A0 =A0 Jacobs University Bremen gGmbH<br=
>
Phone: <a href=3D"tel:%2B49%20421%20200%203587" value=3D"+494212003587">+49=
 421 200 3587</a> =A0 =A0 =A0 =A0 Campus Ring 1, 28759 Bremen, Germany<br>
Fax: =A0 <a href=3D"tel:%2B49%20421%20200%203103" value=3D"+494212003103">+=
49 421 200 3103</a> =A0 =A0 =A0 =A0 &lt;<a href=3D"http://www.jacobs-univer=
sity.de/" target=3D"_blank">http://www.jacobs-university.de/</a>&gt;<br>
</div></div></blockquote></div><br></div>

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From: Andy Bierman <andy@yumaworks.com>
To: Thomas Watteyne <watteyne@eecs.berkeley.edu>
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Subject: Re: [coman] Device Classes?
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On Fri, Apr 4, 2014 at 9:01 PM, Thomas Watteyne
<watteyne@eecs.berkeley.edu>wrote:

> Andy, all,
>
> If CoAP is already in nodes for the applications running on, you have a
> monitoring/management solution almost for free. Want to monitoring the
> state of some attribute of your protocol? Use CoAP observe. Want to chang=
e
> a parameter of your protocol? CoAP PUT. On top of that, the work from
> CORE/DICE/DTLS/ACE, will ensure security, including authentication and
> authorization of management entities.
>
> For nodes where CoAP is present for the application, proposing an
> additional protocol will be a very hard sell.
>
>
It isn't another protocol.
It is a mapping of the RESTCONF data model framework onto CoAP.

A RESTCONF mapping would really just describe what the server was
expected to do wrt/ the content layer.


Andy



> Of course, as pointed out by Carsten, we need to agree on the resources.
> What is the URI, what methods are supported, what's the payload format,
> etc. YANG is a data modeling language which enables exactly that. RESTCON=
F
> has a RESTful approach to monitoring/management which is aligned with CoA=
P.
> What we would need is a constrained version of RESTCONF. This could be (a=
nd
> should be) very simple.
>
> At 6TiSCH, we have started this work, with YANG based data model [1] and =
a
> CoAP-based protocol built around that [2], any URI starting with "/6t" is
> to monitoring and manage the 6top sublayer. I believe there would be a hu=
ge
> benefit to having a more general solution, to which we all agree, i.e. a
> CoAPified version of RESTCONF. COMAN looks like the right place to do thi=
s.
>
> Thomas
>
> [1] http://tools.ietf.org/html/draft-ietf-6tisch-6top-interface-00
> [2] http://tools.ietf.org/html/draft-sudhaakar-6tisch-coap-01
>
>
> On Fri, Apr 4, 2014 at 5:16 PM, Andy Bierman <andy@yumaworks.com> wrote:
>
>>
>>
>>
>> On Fri, Apr 4, 2014 at 6:49 AM, Carsten Bormann <cabo@tzi.org> wrote:
>>
>>>
>>> On 04 Apr 2014, at 13:45, Hannes Tschofenig <hannes.tschofenig@gmx.net>
>>> wrote:
>>>
>>> > Hi Carsten.
>>> >
>>> >
>>> > On 04/04/2014 02:08 PM, Carsten Bormann wrote:
>>> >> On 04 Apr 2014, at 13:32, Hannes Tschofenig <
>>> hannes.tschofenig@gmx.net> wrote:
>>> >>
>>> >>> For me the software update mechanism is extremely important since i=
t
>>> is
>>> >>> not just a way to replace the entire firmware but also to provision
>>> >>> certain protocol parameters.
>>> >>
>>> >> Provisioning protocol parameters is one CoAP PUT to the right
>>> resource.  Cf. OMA LWM2M.
>>> >> (They also do define a firmware update mechanism, but that seems to
>>> presume the device has space for a complete firmware image.)
>>> >
>>> > That is exactly the question I raised when it comes to network
>>> management.
>>> >
>>> > I don't understand what network management protocol add beyond what i=
s
>>> > already there with CoAP.
>>>
>>> Assuming we continue to use the client-server model of network
>>> management, to use CoAP for this we need to define
>>>
>>> 1) What are the URIs that can be used for management?  How does the
>>> client learn them (combination of discovery, URI templates, HATEOAS)?
>>>
>>> 2) What are the representations being exchanged (data format, data
>>> modeling method).
>>>
>>>
>> RESTCONF addresses (1) and (2).
>> It replaces HATEOAS with YANG in order to be extensible,
>> modular, and predictable. The target use-case is programmatic
>> control.  HATEOAS seems more appropriate when human eyeballs and
>> brain power are part of the state machine.
>>
>> IMO YANG would be a better long-term decision than SMIv2.
>> It may seem that features like custom operations are too
>> heavy-weight and over-kill for constrained networks, but it
>> could be just the opposite.  Custom operations allow expensive
>> generic operations to be condensed and 'packaged' to be as
>> small as possible.
>>
>>
>>
>>
>>> 3) What is the security model.
>>>
>>> There has been a strong argument that we should not start from scratch
>>> with (2) (and probably not entirely with (1) either), even if we are no=
t
>>> using the other parts of existing management protocols.
>>>
>>> Proposals to address (1) and (2) are, for instance:
>>> http://tools.ietf.org/html/draft-vanderstok-core-comi-03
>>> http://www.tzi.de/~cabo/noms2014.pdf
>>>
>>> (My assumption is that ACE will be good enough to cover (3); we'll have
>>> to make sure the lessons learned from management security go into ACE.)
>>>
>>> > Of course, you could replace CoAP entirely with SNMP
>>>
>>> SNMP is a bit more specialized and will not fit all applications that
>>> CoAP is designed to cover.
>>> But, yes, SNMP has been used successfully as an application protocol in
>>> certain environments.
>>>
>>> >> If you want to do this the SEP2.0 way, you need EAP/PANA.
>>> >> (SEP2.0 is targeting class-2+, not class-1.)
>>> >
>>> > With devices that are in direct connection with each other you could
>>> > argue that there is no need for DTLS and alike since you will have to
>>> > deal with the pairing procedure at the lower layer. Many devices fall
>>> > into that category.
>>>
>>> (Defining single-hop security only is not very useful for the Internet
>>> of Things.)
>>>
>>> > If that's not the case I believe you cannot assume that no network
>>> > access authentication will be needed.
>>>
>>> Indeed, most wireless networks will need network access control.
>>> Maybe there are ways to authorize (!) access to a network that are more
>>> appropriate for the Internet of Things.
>>> But this is outside the scope of COMAN.
>>>
>>> Gr=FC=DFe, Carsten
>>>
>>>
>>
>> Andy
>>
>>
>> _______________________________________________
>> coman mailing list
>> coman@ietf.org
>> https://www.ietf.org/mailman/listinfo/coman
>>
>>
>

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<div dir=3D"ltr"><br><div class=3D"gmail_extra"><br><br><div class=3D"gmail=
_quote">On Fri, Apr 4, 2014 at 9:01 PM, Thomas Watteyne <span dir=3D"ltr">&=
lt;<a href=3D"mailto:watteyne@eecs.berkeley.edu" target=3D"_blank">watteyne=
@eecs.berkeley.edu</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><div dir=3D"ltr">Andy, all,<div><br></div><d=
iv>If CoAP is already in nodes for the applications running on, you have a =
monitoring/management solution almost for free. Want to monitoring the stat=
e of some attribute of your protocol? Use CoAP observe. Want to change a pa=
rameter of your protocol? CoAP PUT. On top of that, the work from CORE/DICE=
/DTLS/ACE, will ensure security, including authentication and authorization=
 of management entities.</div>


<div><br></div><div>For nodes where CoAP is present for the application, pr=
oposing an additional protocol will be a very hard sell.</div><div><br></di=
v></div></blockquote><div><br></div><div>It isn&#39;t another protocol.</di=
v>
<div>It is a mapping of the RESTCONF data model framework onto CoAP.</div><=
div><br></div><div>A RESTCONF mapping would really just describe what the s=
erver was</div><div>expected to do wrt/ the content layer.</div><div><br>
</div><div><br></div><div>Andy</div><div><br></div><div>&nbsp;</div><blockq=
uote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc =
solid;padding-left:1ex"><div dir=3D"ltr"><div></div><div>Of course, as poin=
ted out by Carsten, we need to agree on the resources. What is the URI, wha=
t methods are supported, what&#39;s the payload format, etc. YANG is a data=
 modeling language which enables exactly that. RESTCONF has a RESTful appro=
ach to monitoring/management which is aligned with CoAP. What we would need=
 is a constrained version of RESTCONF. This could be (and should be) very s=
imple.</div>


<div><br></div><div>At 6TiSCH, we have started this work, with YANG based d=
ata model [1] and a CoAP-based protocol built around that [2], any URI star=
ting with &quot;/6t&quot; is to monitoring and manage the 6top sublayer. I =
believe there would be a huge benefit to having a more general solution, to=
 which we all agree, i.e. a CoAPified version of RESTCONF. COMAN looks like=
 the right place to do this.</div>


<div><br></div><div>Thomas</div><div><br></div><div>[1]&nbsp;<a href=3D"htt=
p://tools.ietf.org/html/draft-ietf-6tisch-6top-interface-00" target=3D"_bla=
nk">http://tools.ietf.org/html/draft-ietf-6tisch-6top-interface-00</a></div=
><div>
[2]&nbsp;<a href=3D"http://tools.ietf.org/html/draft-sudhaakar-6tisch-coap-=
01" target=3D"_blank">http://tools.ietf.org/html/draft-sudhaakar-6tisch-coa=
p-01</a></div>

</div><div class=3D"gmail_extra"><br><br><div class=3D"gmail_quote">On Fri,=
 Apr 4, 2014 at 5:16 PM, Andy Bierman <span dir=3D"ltr">&lt;<a href=3D"mail=
to:andy@yumaworks.com" target=3D"_blank">andy@yumaworks.com</a>&gt;</span> =
wrote:<br>


<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><div dir=3D"ltr"><br><div class=3D"gmail_ext=
ra"><br><br><div class=3D"gmail_quote"><div>On Fri, Apr 4, 2014 at 6:49 AM,=
 Carsten Bormann <span dir=3D"ltr">&lt;<a href=3D"mailto:cabo@tzi.org" targ=
et=3D"_blank">cabo@tzi.org</a>&gt;</span> wrote:<br>



<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><br>
On 04 Apr 2014, at 13:45, Hannes Tschofenig &lt;<a href=3D"mailto:hannes.ts=
chofenig@gmx.net" target=3D"_blank">hannes.tschofenig@gmx.net</a>&gt; wrote=
:<br>
<br>
&gt; Hi Carsten.<br>
&gt;<br>
&gt;<br>
&gt; On 04/04/2014 02:08 PM, Carsten Bormann wrote:<br>
&gt;&gt; On 04 Apr 2014, at 13:32, Hannes Tschofenig &lt;<a href=3D"mailto:=
hannes.tschofenig@gmx.net" target=3D"_blank">hannes.tschofenig@gmx.net</a>&=
gt; wrote:<br>
&gt;&gt;<br>
&gt;&gt;&gt; For me the software update mechanism is extremely important si=
nce it is<br>
&gt;&gt;&gt; not just a way to replace the entire firmware but also to prov=
ision<br>
&gt;&gt;&gt; certain protocol parameters.<br>
&gt;&gt;<br>
&gt;&gt; Provisioning protocol parameters is one CoAP PUT to the right reso=
urce. &nbsp;Cf. OMA LWM2M.<br>
&gt;&gt; (They also do define a firmware update mechanism, but that seems t=
o presume the device has space for a complete firmware image.)<br>
&gt;<br>
&gt; That is exactly the question I raised when it comes to network managem=
ent.<br>
&gt;<br>
&gt; I don&#39;t understand what network management protocol add beyond wha=
t is<br>
&gt; already there with CoAP.<br>
<br>
Assuming we continue to use the client-server model of network management, =
to use CoAP for this we need to define<br>
<br>
1) What are the URIs that can be used for management? &nbsp;How does the cl=
ient learn them (combination of discovery, URI templates, HATEOAS)?<br>
<br>
2) What are the representations being exchanged (data format, data modeling=
 method).<br>
<br></blockquote><div><br></div></div><div>RESTCONF addresses (1) and (2).<=
/div><div>It replaces HATEOAS with YANG in order to be extensible,</div><di=
v>modular, and predictable. The target use-case is programmatic</div><div>


control. &nbsp;HATEOAS seems more appropriate when human eyeballs and</div>
<div>brain power are part of the state machine.</div><div><br></div><div>IM=
O YANG would be a better long-term decision than SMIv2.</div><div>It may se=
em that features like custom operations are too</div><div>heavy-weight and =
over-kill for constrained networks, but it</div>



<div>could be just the opposite. &nbsp;Custom operations allow expensive</d=
iv><div>generic operations to be condensed and &#39;packaged&#39; to be as<=
/div><div>small as possible.</div><div><div><br></div><div><br></div>

<div>&nbsp;<br></div>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
3) What is the security model.<br>
<br>
There has been a strong argument that we should not start from scratch with=
 (2) (and probably not entirely with (1) either), even if we are not using =
the other parts of existing management protocols.<br>
<br>
Proposals to address (1) and (2) are, for instance:<br>
<a href=3D"http://tools.ietf.org/html/draft-vanderstok-core-comi-03" target=
=3D"_blank">http://tools.ietf.org/html/draft-vanderstok-core-comi-03</a><br=
>
<a href=3D"http://www.tzi.de/~cabo/noms2014.pdf" target=3D"_blank">http://w=
ww.tzi.de/~cabo/noms2014.pdf</a><br>
<br>
(My assumption is that ACE will be good enough to cover (3); we&rsquo;ll ha=
ve to make sure the lessons learned from management security go into ACE.)<=
br>
<br>
&gt; Of course, you could replace CoAP entirely with SNMP<br>
<br>
SNMP is a bit more specialized and will not fit all applications that CoAP =
is designed to cover.<br>
But, yes, SNMP has been used successfully as an application protocol in cer=
tain environments.<br>
<br>
&gt;&gt; If you want to do this the SEP2.0 way, you need EAP/PANA.<br>
&gt;&gt; (SEP2.0 is targeting class-2+, not class-1.)<br>
&gt;<br>
&gt; With devices that are in direct connection with each other you could<b=
r>
&gt; argue that there is no need for DTLS and alike since you will have to<=
br>
&gt; deal with the pairing procedure at the lower layer. Many devices fall<=
br>
&gt; into that category.<br>
<br>
(Defining single-hop security only is not very useful for the Internet of T=
hings.)<br>
<br>
&gt; If that&#39;s not the case I believe you cannot assume that no network=
<br>
&gt; access authentication will be needed.<br>
<br>
Indeed, most wireless networks will need network access control.<br>
Maybe there are ways to authorize (!) access to a network that are more app=
ropriate for the Internet of Things.<br>
But this is outside the scope of COMAN.<br>
<br>
Gr=FC=DFe, Carsten<br>
<br></blockquote><div><br></div><div><br></div></div><span><font color=3D"#=
888888"><div>Andy</div><div><br></div></font></span></div></div></div>
<br>_______________________________________________<br>
coman mailing list<br>
<a href=3D"mailto:coman@ietf.org" target=3D"_blank">coman@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/coman" target=3D"_blank">h=
ttps://www.ietf.org/mailman/listinfo/coman</a><br>
<br></blockquote></div><br></div>
</blockquote></div><br></div></div>

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Subject: Re: [coman] Device Classes?
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Andy,
+1.
I'm meant "proposing an additional protocol *not using CoAP* will be a very
hard sell". I personally believe mapping RESTCONF onto CoAP is a good
approach, sorry if that wasn't clear.
Thomas


On Sat, Apr 5, 2014 at 10:08 AM, Andy Bierman <andy@yumaworks.com> wrote:

>
>
>
> On Fri, Apr 4, 2014 at 9:01 PM, Thomas Watteyne <
> watteyne@eecs.berkeley.edu> wrote:
>
>> Andy, all,
>>
>> If CoAP is already in nodes for the applications running on, you have a
>> monitoring/management solution almost for free. Want to monitoring the
>> state of some attribute of your protocol? Use CoAP observe. Want to chan=
ge
>> a parameter of your protocol? CoAP PUT. On top of that, the work from
>> CORE/DICE/DTLS/ACE, will ensure security, including authentication and
>> authorization of management entities.
>>
>> For nodes where CoAP is present for the application, proposing an
>> additional protocol will be a very hard sell.
>>
>>
> It isn't another protocol.
> It is a mapping of the RESTCONF data model framework onto CoAP.
>
> A RESTCONF mapping would really just describe what the server was
> expected to do wrt/ the content layer.
>
>
> Andy
>
>
>
>> Of course, as pointed out by Carsten, we need to agree on the resources.
>> What is the URI, what methods are supported, what's the payload format,
>> etc. YANG is a data modeling language which enables exactly that. RESTCO=
NF
>> has a RESTful approach to monitoring/management which is aligned with Co=
AP.
>> What we would need is a constrained version of RESTCONF. This could be (=
and
>> should be) very simple.
>>
>> At 6TiSCH, we have started this work, with YANG based data model [1] and
>> a CoAP-based protocol built around that [2], any URI starting with "/6t"=
 is
>> to monitoring and manage the 6top sublayer. I believe there would be a h=
uge
>> benefit to having a more general solution, to which we all agree, i.e. a
>> CoAPified version of RESTCONF. COMAN looks like the right place to do th=
is.
>>
>> Thomas
>>
>> [1] http://tools.ietf.org/html/draft-ietf-6tisch-6top-interface-00
>> [2] http://tools.ietf.org/html/draft-sudhaakar-6tisch-coap-01
>>
>>
>> On Fri, Apr 4, 2014 at 5:16 PM, Andy Bierman <andy@yumaworks.com> wrote:
>>
>>>
>>>
>>>
>>> On Fri, Apr 4, 2014 at 6:49 AM, Carsten Bormann <cabo@tzi.org> wrote:
>>>
>>>>
>>>> On 04 Apr 2014, at 13:45, Hannes Tschofenig <hannes.tschofenig@gmx.net=
>
>>>> wrote:
>>>>
>>>> > Hi Carsten.
>>>> >
>>>> >
>>>> > On 04/04/2014 02:08 PM, Carsten Bormann wrote:
>>>> >> On 04 Apr 2014, at 13:32, Hannes Tschofenig <
>>>> hannes.tschofenig@gmx.net> wrote:
>>>> >>
>>>> >>> For me the software update mechanism is extremely important since
>>>> it is
>>>> >>> not just a way to replace the entire firmware but also to provisio=
n
>>>> >>> certain protocol parameters.
>>>> >>
>>>> >> Provisioning protocol parameters is one CoAP PUT to the right
>>>> resource.  Cf. OMA LWM2M.
>>>> >> (They also do define a firmware update mechanism, but that seems to
>>>> presume the device has space for a complete firmware image.)
>>>> >
>>>> > That is exactly the question I raised when it comes to network
>>>> management.
>>>> >
>>>> > I don't understand what network management protocol add beyond what =
is
>>>> > already there with CoAP.
>>>>
>>>> Assuming we continue to use the client-server model of network
>>>> management, to use CoAP for this we need to define
>>>>
>>>> 1) What are the URIs that can be used for management?  How does the
>>>> client learn them (combination of discovery, URI templates, HATEOAS)?
>>>>
>>>> 2) What are the representations being exchanged (data format, data
>>>> modeling method).
>>>>
>>>>
>>> RESTCONF addresses (1) and (2).
>>> It replaces HATEOAS with YANG in order to be extensible,
>>> modular, and predictable. The target use-case is programmatic
>>> control.  HATEOAS seems more appropriate when human eyeballs and
>>> brain power are part of the state machine.
>>>
>>> IMO YANG would be a better long-term decision than SMIv2.
>>> It may seem that features like custom operations are too
>>> heavy-weight and over-kill for constrained networks, but it
>>> could be just the opposite.  Custom operations allow expensive
>>> generic operations to be condensed and 'packaged' to be as
>>> small as possible.
>>>
>>>
>>>
>>>
>>>> 3) What is the security model.
>>>>
>>>> There has been a strong argument that we should not start from scratch
>>>> with (2) (and probably not entirely with (1) either), even if we are n=
ot
>>>> using the other parts of existing management protocols.
>>>>
>>>> Proposals to address (1) and (2) are, for instance:
>>>> http://tools.ietf.org/html/draft-vanderstok-core-comi-03
>>>> http://www.tzi.de/~cabo/noms2014.pdf
>>>>
>>>> (My assumption is that ACE will be good enough to cover (3); we'll hav=
e
>>>> to make sure the lessons learned from management security go into ACE.=
)
>>>>
>>>> > Of course, you could replace CoAP entirely with SNMP
>>>>
>>>> SNMP is a bit more specialized and will not fit all applications that
>>>> CoAP is designed to cover.
>>>> But, yes, SNMP has been used successfully as an application protocol i=
n
>>>> certain environments.
>>>>
>>>> >> If you want to do this the SEP2.0 way, you need EAP/PANA.
>>>> >> (SEP2.0 is targeting class-2+, not class-1.)
>>>> >
>>>> > With devices that are in direct connection with each other you could
>>>> > argue that there is no need for DTLS and alike since you will have t=
o
>>>> > deal with the pairing procedure at the lower layer. Many devices fal=
l
>>>> > into that category.
>>>>
>>>> (Defining single-hop security only is not very useful for the Internet
>>>> of Things.)
>>>>
>>>> > If that's not the case I believe you cannot assume that no network
>>>> > access authentication will be needed.
>>>>
>>>> Indeed, most wireless networks will need network access control.
>>>> Maybe there are ways to authorize (!) access to a network that are mor=
e
>>>> appropriate for the Internet of Things.
>>>> But this is outside the scope of COMAN.
>>>>
>>>> Gr=FC=DFe, Carsten
>>>>
>>>>
>>>
>>> Andy
>>>
>>>
>>> _______________________________________________
>>> coman mailing list
>>> coman@ietf.org
>>> https://www.ietf.org/mailman/listinfo/coman
>>>
>>>
>>
>

--047d7b160007e9ed3604f64ed598
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Andy,<div>+1.&nbsp;</div><div>I&#39;m meant &quot;proposin=
g an additional protocol *not using CoAP* will be a very hard sell&quot;. I=
 personally believe mapping RESTCONF onto CoAP is a good approach, sorry if=
 that wasn&#39;t clear.</div>

<div>Thomas</div></div><div class=3D"gmail_extra"><br><br><div class=3D"gma=
il_quote">On Sat, Apr 5, 2014 at 10:08 AM, Andy Bierman <span dir=3D"ltr">&=
lt;<a href=3D"mailto:andy@yumaworks.com" target=3D"_blank">andy@yumaworks.c=
om</a>&gt;</span> wrote:<br>

<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><div dir=3D"ltr"><br><div class=3D"gmail_ext=
ra"><br><br><div class=3D"gmail_quote"><div class=3D"">On Fri, Apr 4, 2014 =
at 9:01 PM, Thomas Watteyne <span dir=3D"ltr">&lt;<a href=3D"mailto:watteyn=
e@eecs.berkeley.edu" target=3D"_blank">watteyne@eecs.berkeley.edu</a>&gt;</=
span> wrote:<br>


<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><div dir=3D"ltr">Andy, all,<div><br></div><d=
iv>If CoAP is already in nodes for the applications running on, you have a =
monitoring/management solution almost for free. Want to monitoring the stat=
e of some attribute of your protocol? Use CoAP observe. Want to change a pa=
rameter of your protocol? CoAP PUT. On top of that, the work from CORE/DICE=
/DTLS/ACE, will ensure security, including authentication and authorization=
 of management entities.</div>




<div><br></div><div>For nodes where CoAP is present for the application, pr=
oposing an additional protocol will be a very hard sell.</div><div><br></di=
v></div></blockquote><div><br></div></div><div>It isn&#39;t another protoco=
l.</div>


<div>It is a mapping of the RESTCONF data model framework onto CoAP.</div><=
div><br></div><div>A RESTCONF mapping would really just describe what the s=
erver was</div><div>expected to do wrt/ the content layer.</div><span class=
=3D"HOEnZb"><font color=3D"#888888"><div>

<br>
</div><div><br></div><div>Andy</div></font></span><div><div class=3D"h5"><d=
iv><br></div><div>&nbsp;</div><blockquote class=3D"gmail_quote" style=3D"ma=
rgin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir=3D"lt=
r"><div>

</div><div>Of course, as pointed out by Carsten, we need to agree on the re=
sources. What is the URI, what methods are supported, what&#39;s the payloa=
d format, etc. YANG is a data modeling language which enables exactly that.=
 RESTCONF has a RESTful approach to monitoring/management which is aligned =
with CoAP. What we would need is a constrained version of RESTCONF. This co=
uld be (and should be) very simple.</div>




<div><br></div><div>At 6TiSCH, we have started this work, with YANG based d=
ata model [1] and a CoAP-based protocol built around that [2], any URI star=
ting with &quot;/6t&quot; is to monitoring and manage the 6top sublayer. I =
believe there would be a huge benefit to having a more general solution, to=
 which we all agree, i.e. a CoAPified version of RESTCONF. COMAN looks like=
 the right place to do this.</div>




<div><br></div><div>Thomas</div><div><br></div><div>[1]&nbsp;<a href=3D"htt=
p://tools.ietf.org/html/draft-ietf-6tisch-6top-interface-00" target=3D"_bla=
nk">http://tools.ietf.org/html/draft-ietf-6tisch-6top-interface-00</a></div=
><div>


[2]&nbsp;<a href=3D"http://tools.ietf.org/html/draft-sudhaakar-6tisch-coap-=
01" target=3D"_blank">http://tools.ietf.org/html/draft-sudhaakar-6tisch-coa=
p-01</a></div>

</div><div class=3D"gmail_extra"><br><br><div class=3D"gmail_quote">On Fri,=
 Apr 4, 2014 at 5:16 PM, Andy Bierman <span dir=3D"ltr">&lt;<a href=3D"mail=
to:andy@yumaworks.com" target=3D"_blank">andy@yumaworks.com</a>&gt;</span> =
wrote:<br>




<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><div dir=3D"ltr"><br><div class=3D"gmail_ext=
ra"><br><br><div class=3D"gmail_quote"><div>On Fri, Apr 4, 2014 at 6:49 AM,=
 Carsten Bormann <span dir=3D"ltr">&lt;<a href=3D"mailto:cabo@tzi.org" targ=
et=3D"_blank">cabo@tzi.org</a>&gt;</span> wrote:<br>





<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><br>
On 04 Apr 2014, at 13:45, Hannes Tschofenig &lt;<a href=3D"mailto:hannes.ts=
chofenig@gmx.net" target=3D"_blank">hannes.tschofenig@gmx.net</a>&gt; wrote=
:<br>
<br>
&gt; Hi Carsten.<br>
&gt;<br>
&gt;<br>
&gt; On 04/04/2014 02:08 PM, Carsten Bormann wrote:<br>
&gt;&gt; On 04 Apr 2014, at 13:32, Hannes Tschofenig &lt;<a href=3D"mailto:=
hannes.tschofenig@gmx.net" target=3D"_blank">hannes.tschofenig@gmx.net</a>&=
gt; wrote:<br>
&gt;&gt;<br>
&gt;&gt;&gt; For me the software update mechanism is extremely important si=
nce it is<br>
&gt;&gt;&gt; not just a way to replace the entire firmware but also to prov=
ision<br>
&gt;&gt;&gt; certain protocol parameters.<br>
&gt;&gt;<br>
&gt;&gt; Provisioning protocol parameters is one CoAP PUT to the right reso=
urce. &nbsp;Cf. OMA LWM2M.<br>
&gt;&gt; (They also do define a firmware update mechanism, but that seems t=
o presume the device has space for a complete firmware image.)<br>
&gt;<br>
&gt; That is exactly the question I raised when it comes to network managem=
ent.<br>
&gt;<br>
&gt; I don&#39;t understand what network management protocol add beyond wha=
t is<br>
&gt; already there with CoAP.<br>
<br>
Assuming we continue to use the client-server model of network management, =
to use CoAP for this we need to define<br>
<br>
1) What are the URIs that can be used for management? &nbsp;How does the cl=
ient learn them (combination of discovery, URI templates, HATEOAS)?<br>
<br>
2) What are the representations being exchanged (data format, data modeling=
 method).<br>
<br></blockquote><div><br></div></div><div>RESTCONF addresses (1) and (2).<=
/div><div>It replaces HATEOAS with YANG in order to be extensible,</div><di=
v>modular, and predictable. The target use-case is programmatic</div><div>




control. &nbsp;HATEOAS seems more appropriate when human eyeballs and</div>
<div>brain power are part of the state machine.</div><div><br></div><div>IM=
O YANG would be a better long-term decision than SMIv2.</div><div>It may se=
em that features like custom operations are too</div><div>heavy-weight and =
over-kill for constrained networks, but it</div>





<div>could be just the opposite. &nbsp;Custom operations allow expensive</d=
iv><div>generic operations to be condensed and &#39;packaged&#39; to be as<=
/div><div>small as possible.</div><div><div><br></div><div><br></div>

<div>&nbsp;<br></div>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
3) What is the security model.<br>
<br>
There has been a strong argument that we should not start from scratch with=
 (2) (and probably not entirely with (1) either), even if we are not using =
the other parts of existing management protocols.<br>
<br>
Proposals to address (1) and (2) are, for instance:<br>
<a href=3D"http://tools.ietf.org/html/draft-vanderstok-core-comi-03" target=
=3D"_blank">http://tools.ietf.org/html/draft-vanderstok-core-comi-03</a><br=
>
<a href=3D"http://www.tzi.de/~cabo/noms2014.pdf" target=3D"_blank">http://w=
ww.tzi.de/~cabo/noms2014.pdf</a><br>
<br>
(My assumption is that ACE will be good enough to cover (3); we&rsquo;ll ha=
ve to make sure the lessons learned from management security go into ACE.)<=
br>
<br>
&gt; Of course, you could replace CoAP entirely with SNMP<br>
<br>
SNMP is a bit more specialized and will not fit all applications that CoAP =
is designed to cover.<br>
But, yes, SNMP has been used successfully as an application protocol in cer=
tain environments.<br>
<br>
&gt;&gt; If you want to do this the SEP2.0 way, you need EAP/PANA.<br>
&gt;&gt; (SEP2.0 is targeting class-2+, not class-1.)<br>
&gt;<br>
&gt; With devices that are in direct connection with each other you could<b=
r>
&gt; argue that there is no need for DTLS and alike since you will have to<=
br>
&gt; deal with the pairing procedure at the lower layer. Many devices fall<=
br>
&gt; into that category.<br>
<br>
(Defining single-hop security only is not very useful for the Internet of T=
hings.)<br>
<br>
&gt; If that&#39;s not the case I believe you cannot assume that no network=
<br>
&gt; access authentication will be needed.<br>
<br>
Indeed, most wireless networks will need network access control.<br>
Maybe there are ways to authorize (!) access to a network that are more app=
ropriate for the Internet of Things.<br>
But this is outside the scope of COMAN.<br>
<br>
Gr=FC=DFe, Carsten<br>
<br></blockquote><div><br></div><div><br></div></div><span><font color=3D"#=
888888"><div>Andy</div><div><br></div></font></span></div></div></div>
<br>_______________________________________________<br>
coman mailing list<br>
<a href=3D"mailto:coman@ietf.org" target=3D"_blank">coman@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/coman" target=3D"_blank">h=
ttps://www.ietf.org/mailman/listinfo/coman</a><br>
<br></blockquote></div><br></div>
</blockquote></div></div></div><br></div></div>
</blockquote></div><br></div>

--047d7b160007e9ed3604f64ed598--


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From: peter van der Stok <stokcons@xs4all.nl>
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> It would be really nice if we would all have a common understanding of
> what roughly the code and storage requirements of the various
> protocols involved are. Is LWIG producing something a kind of a survey
> like this? If so, this would be great I think.
> 
> /js

+1
Peter van der Stok


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On 4/4/2014 9:04 AM, Juergen Schoenwaelder wrote:
> On Fri, Apr 04, 2014 at 01:45:47PM +0200, Hannes Tschofenig wrote:
>> Of course, you could replace CoAP entirely with SNMP (as Juergen had
>> suggested).
>>
> I did not suggest to replace CoAP with SNMP. What I said is:
>
> 1) We have done an SNMP only implementation and we know it works and
>     what the resource consumption is.

Please more detail?  SNMP version?  Security? Implemented MIBs, etc?


>
> 2) I see potential in a RESTCONF to CoAP mapping for devices that do
>     CoAP.
>
> 3) I agree with the desire to keep code down to a minimum and thus to
>     keep the number of protocols needed to a minimum.
>
> 4) In our experience, the biggest chunk of code and memory goes to
>     security and in particular crypto algorithms. Being able to exploit
>     crypto hardware is a major plus as is using the same security and
>     crypto mechanisms for all protocols supported.
>
> It would be really nice if we would all have a common understanding of
> what roughly the code and storage requirements of the various
> protocols involved are. Is LWIG producing something a kind of a survey
> like this? If so, this would be great I think.
>
> /js
>


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Subject: Re: [coman] Device Classes?
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On Mon, Apr 07, 2014 at 11:57:06AM -0400, Paul Duffy wrote:
> On 4/4/2014 9:04 AM, Juergen Schoenwaelder wrote:
> >On Fri, Apr 04, 2014 at 01:45:47PM +0200, Hannes Tschofenig wrote:
> >>Of course, you could replace CoAP entirely with SNMP (as Juergen had
> >>suggested).
> >>
> >I did not suggest to replace CoAP with SNMP. What I said is:
> >
> >1) We have done an SNMP only implementation and we know it works and
> >    what the resource consumption is.
> 
> Please more detail?  SNMP version?  Security? Implemented MIBs, etc?
> 

http://dx.doi.org/10.1109/MCOM.2012.6384464
http://dx.doi.org/10.1109/GreenCom.2012.21
http://dx.doi.org/10.1007/978-3-642-21484-4_13

In short, we implemented all three versions of SNMP including USM
security. We also did our own DTLS implementation but did not find the
time to integrate it into the SNMP code. Anyway, if you do security in
software, this is a big hit - far bigger than the protocol stuff.

Concerning MIBs, we did a bit of the IF-MIB, the LOWPAN-MIB and the
RPL-MIB plus bits and pieced of the ENTITY-MIB and the
ENTITY-SENSOR-MIB (the later we used to expose an energy sensor
attached to a mote).

Fitting all the MIB modules plus SNMPv3 on the modes is getting tough
since RPL eats quite some resources (but things may have improved
meanwhile).

/js

PS: No additional standards were needed to do any of the SNMP stuff. ;-)

-- 
Juergen Schoenwaelder           Jacobs University Bremen gGmbH
Phone: +49 421 200 3587         Campus Ring 1, 28759 Bremen, Germany
Fax:   +49 421 200 3103         <http://www.jacobs-university.de/>

