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From: "Michael Behringer (mbehring)" <mbehring@cisco.com>
To: "Toerless Eckert (eckert)" <eckert@cisco.com>, "Max Pritikin (pritikin)" <pritikin@cisco.com>, "Jason Coleman (colemaj)" <colemaj@cisco.com>, "mcr+ietf@sandelman.ca" <mcr+ietf@sandelman.ca>, "ietf@sandeep.de" <ietf@sandeep.de>, "alper.yegin@yegin.org" <alper.yegin@yegin.org>, "jiangsheng@huawei.com" <jiangsheng@huawei.com>, "leo.liubing@huawei.com" <leo.liubing@huawei.com>, "brian.e.carpenter@gmail.com" <brian.e.carpenter@gmail.com>, "kwatsen@juniper.net" <kwatsen@juniper.net>, "anima-bootstrap@ietf.org" <anima-bootstrap@ietf.org>
Thread-Topic: Weekly Webex invite for anima bootstrap team meeting
Thread-Index: AdCq3XIOlfGppXwlS+iXiAzrSXhA3hxq3hCw
Date: Wed, 11 Nov 2015 13:58:42 +0000
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Subject: Re: [Anima-bootstrap] Weekly Webex invite for anima bootstrap team meeting
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Bank holiday today in France, I won't join.

Michael

      -----Original Appointment-----
      From: Toerless Eckert (eckert)
      Sent: 20 June 2015 00:15
      To: Toerless Eckert (eckert); Max Pritikin (pritikin); Jason Coleman =
(colemaj); mcr+ietf@sandelman.ca; ietf@sandeep.de; Michael Behringer (mbehr=
ing); alper.yegin@yegin.org; jiangsheng@huawei.com; leo.liubing@huawei.com;=
 brian.e.carpenter@gmail.com; kwatsen@juniper.net; anima-bootstrap@ietf.org
      Subject: Weekly Webex invite for anima bootstrap team meeting
      When: 11 November 2015 07:00-08:00 (UTC-08:00) Pacific Time (US & Can=
ada).
      Where: Webex - Video/Audio



      So Wednesday 7 AM PST seems to be the best slot - it fits everybody e=
xcept Brian and myself, and I think I can get the other meeting moved. Mich=
ael Richardson also mentioned that we may be on/off 1 hour due to daylight =
saving times, so let me shoot the meeting invite out here with outlook and =
webex, and see if this still works for everybody else.


      Cheers
          Toerless


      -- Do not delete or change any of the following text. --


      Join WebEx meeting<https://cisco.webex.com/ciscosales/j.php?MTID=3Dma=
5a7178d02a2edcb0c6d7b43e5315f08>
      Meeting number: 200 557 721
      Meeting password: boot


      If you are the host, you can use the meeting host key to pass the hos=
t privilege to another participant or to start the meeting from a video con=
ferencing system or application. To find the host key for this meeting, go =
here.<https://cisco.webex.com/ciscosales/j.php?MTID=3Dm0ab0c7d2c43095ce03ec=
01239fd109bf>

      Join by phone
      +1-866-432-9903 Call-in toll-free number (US/Canada)
      +1-408-525-6800 Call-in toll number (US/Canada)
      Access code: 200 557 721
      Global call-in numbers<https://cisco.webex.com/ciscosales/globalcalli=
n.php?serviceType=3DMC&ED=3D317186532&tollFree=3D1>  |  Toll-free calling r=
estrictions<http://www.webex.com/pdf/tollfree_restrictions.pdf>


      Can't join the meeting? Contact support.<https://cisco.webex.com/cisc=
osales/mc>

      IMPORTANT NOTICE: Please note that this WebEx service allows audio an=
d other information sent during the session to be recorded, which may be di=
scoverable in a legal matter. By joining this session, you automatically co=
nsent to such recordings. If you do not consent to being recorded, discuss =
your concerns with the host or do not join the session..


--_000_2fcca486f0ae41e4a7e0ba0c44a9a6f8XCHRCD006ciscocom_
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<body>
<font face=3D"Calibri" size=3D"2"><span style=3D"font-size:11pt;">
<div><font color=3D"#1F497D">Bank holiday today in France, I won&#8217;t jo=
in. </font></div>
<div><font color=3D"#1F497D">&nbsp;</font></div>
<div><font color=3D"#1F497D">Michael</font></div>
<div><font color=3D"#1F497D">&nbsp;</font></div>
<div style=3D"padding-left:36pt;">-----Original Appointment-----<br>

<b>From:</b> Toerless Eckert (eckert) <br>

<b>Sent:</b> 20 June 2015 00:15<br>

<b>To:</b> Toerless Eckert (eckert); Max Pritikin (pritikin); Jason Coleman=
 (colemaj); mcr&#43;ietf@sandelman.ca; ietf@sandeep.de; Michael Behringer (=
mbehring); alper.yegin@yegin.org; jiangsheng@huawei.com; leo.liubing@huawei=
.com; brian.e.carpenter@gmail.com; kwatsen@juniper.net;
anima-bootstrap@ietf.org<br>

<b>Subject:</b> Weekly Webex invite for anima bootstrap team meeting<br>

<b>When:</b> 11 November 2015 07:00-08:00 (UTC-08:00) Pacific Time (US &amp=
; Canada).<br>

<b>Where:</b> Webex - Video/Audio</div>
<div style=3D"padding-left:36pt;">&nbsp;</div>
<div style=3D"padding-left:36pt;">&nbsp;</div>
<a name=3D"BM_BEGIN"></a>
<div style=3D"padding-left:36pt;"><font face=3D"Courier New" size=3D"3"><sp=
an style=3D"font-size:12pt;">&nbsp;</span></font></div>
<div style=3D"padding-left:36pt;"><font size=3D"1"><span style=3D"font-size=
:8pt;">So Wednesday 7 AM PST seems to be the best slot &#8211; it fits ever=
ybody except Brian and myself, and I think I can get the other meeting move=
d. Michael Richardson also mentioned that we
may be on/off 1 hour due to daylight saving times, so let me shoot the meet=
ing invite out here with outlook and webex, and see if this still works for=
 everybody else.</span></font></div>
<div style=3D"padding-left:36pt;"><br>

</div>
<div style=3D"padding-left:36pt;"><font size=3D"1"><span style=3D"font-size=
:8pt;">Cheers</span></font></div>
<div style=3D"padding-left:36pt;"><font size=3D"1"><span style=3D"font-size=
:8pt;">&nbsp;&nbsp;&nbsp; Toerless</span></font></div>
<div style=3D"padding-left:36pt;"><font face=3D"Arial" size=3D"1"><span sty=
le=3D"font-size:8pt;">&nbsp;
<br>

&nbsp; <br>

<font size=3D"2" color=3D"#666666"><span style=3D"font-size:10pt;">-</span>=
</font><a name=3D"MacBeginWBXTag"></a>- Do not delete or change any of the =
following text. --<font size=3D"1"><span style=3D"font-size:7.5pt;">&nbsp;&=
nbsp;
<br>

&nbsp; <br>

&nbsp; <br>

</span></font><a href=3D"https://cisco.webex.com/ciscosales/j.php?MTID=3Dma=
5a7178d02a2edcb0c6d7b43e5315f08"><font size=3D"3" color=3D"#00AFF9"><span s=
tyle=3D"font-size:12pt;"><u>Join WebEx meeting</u></span></font></a><font s=
ize=3D"4"><span style=3D"font-size:13.5pt;">&nbsp;&nbsp;
<br>

</span></font><font size=3D"2" color=3D"#666666"><span style=3D"font-size:1=
0pt;">Meeting number: 200 557 721</span></font><font size=3D"4"><span style=
=3D"font-size:13.5pt;">&nbsp;
<br>

</span></font><font size=3D"2" color=3D"#666666"><span style=3D"font-size:1=
0pt;">Meeting password:</span></font><font size=3D"4"><span style=3D"font-s=
ize:13.5pt;"> </span></font><font size=3D"2" color=3D"#666666"><span style=
=3D"font-size:10pt;">boot</span></font><font size=3D"4"><span style=3D"font=
-size:13.5pt;">&nbsp;
<br>

</span></font><font size=3D"1"><span style=3D"font-size:7.5pt;">&nbsp; <br>

<br>

</span></font><font size=3D"2" color=3D"#666666"><span style=3D"font-size:1=
0pt;">If you are the host, you can use the meeting host key to pass the hos=
t privilege to another participant or to start the meeting from a video con=
ferencing system or application. To find
the host key for this meeting, </span></font><a href=3D"https://cisco.webex=
.com/ciscosales/j.php?MTID=3Dm0ab0c7d2c43095ce03ec01239fd109bf"><font size=
=3D"2" color=3D"#00AFF9"><span style=3D"font-size:10pt;"><u>go here.</u></s=
pan></font></a><br>

<br>

<font size=3D"3" color=3D"#666666"><span style=3D"font-size:12pt;">Join by =
phone</span></font><font size=3D"4"><span style=3D"font-size:13.5pt;">&nbsp=
;
<br>

</span></font><font size=3D"2" color=3D"#666666"><span style=3D"font-size:1=
0pt;"><b>&#43;1-866-432-9903</b></span></font><font size=3D"2" color=3D"#66=
6666"><span style=3D"font-size:10pt;"> Call-in toll-free number (US/Canada)=
</span></font><font size=3D"4"><span style=3D"font-size:13.5pt;">&nbsp;
<br>

</span></font><font size=3D"2" color=3D"#666666"><span style=3D"font-size:1=
0pt;"><b>&#43;1-408-525-6800</b></span></font><font size=3D"2" color=3D"#66=
6666"><span style=3D"font-size:10pt;"> Call-in toll number (US/Canada)</spa=
n></font><font size=3D"4"><span style=3D"font-size:13.5pt;">&nbsp;
<br>

</span></font><font size=3D"2" color=3D"#666666"><span style=3D"font-size:1=
0pt;">Access code: 200 557 721</span></font><font size=3D"4"><span style=3D=
"font-size:13.5pt;">&nbsp;
<br>

</span></font><a href=3D"https://cisco.webex.com/ciscosales/globalcallin.ph=
p?serviceType=3DMC&amp;ED=3D317186532&amp;tollFree=3D1"><font size=3D"1" co=
lor=3D"#00AFF9"><span style=3D"font-size:7.5pt;"><u>Global call-in numbers<=
/u></span></font></a><font size=3D"1"><span style=3D"font-size:7.5pt;">&nbs=
p;
|&nbsp; </span></font><a href=3D"http://www.webex.com/pdf/tollfree_restrict=
ions.pdf"><font size=3D"1" color=3D"#00AFF9"><span style=3D"font-size:7.5pt=
;"><u>Toll-free calling restrictions</u></span></font></a><font size=3D"4">=
<span style=3D"font-size:13.5pt;">&nbsp;&nbsp;
<br>

</span></font><font size=3D"1"><span style=3D"font-size:7.5pt;">&nbsp; <br>

&nbsp; <br>

</span></font><font size=3D"1" color=3D"#666666"><span style=3D"font-size:7=
.5pt;">Can't join the meeting?</span></font><font size=3D"1"><span style=3D=
"font-size:7.5pt;"> </span></font><a href=3D"https://cisco.webex.com/ciscos=
ales/mc"><font size=3D"1" color=3D"#00AFF9"><span style=3D"font-size:7.5pt;=
"><u>Contact
support.</u></span></font></a><font size=3D"1"><span style=3D"font-size:7.5=
pt;">&nbsp;&nbsp; <br>

&nbsp; <br>

</span></font><font size=3D"1" color=3D"#A0A0A0"><span style=3D"font-size:7=
.5pt;">IMPORTANT NOTICE: Please note that this WebEx service allows audio a=
nd other information sent during the session to be recorded, which may be d=
iscoverable in a legal matter. By joining
this session, you automatically consent to such recordings. If you do not c=
onsent to being recorded, discuss your concerns with the host or do not joi=
n the session..</span></font><a name=3D"MacEndWBXTag"></a><font size=3D"1">=
<span style=3D"font-size:7.5pt;"> </span></font></span></font></div>
<div style=3D"padding-left:36pt;">&nbsp;</div>
</span></font>
</body>
</html>

--_000_2fcca486f0ae41e4a7e0ba0c44a9a6f8XCHRCD006ciscocom_--


From nobody Wed Nov 11 07:12:56 2015
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From: "Max Pritikin (pritikin)" <pritikin@cisco.com>
To: anima-bootstrap <anima-bootstrap@ietf.org>
Thread-Topic: minimal meeting this morning post yokohama
Thread-Index: AQHRHJNuhKviS5rX/E2GWdXO4A8GuQ==
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From: Robert Cragie <Robert.Cragie@arm.com>
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Subject: Re: [Anima-bootstrap] minimal meeting this morning post yokohama
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Max Pritikin (pritikin) <pritikin@cisco.com> wrote:
    > Only Toerless and myself joined this morning. We briefly discussed the
    > thread re ACP & GRASP layering that Richardson started but other than
    > that shut down the discussion for lack of attendance.

Sorry, was recovering from travel and had sick kid at home.. I didn't mean =
to
fall asleep on the couch watching cartoons :-)

    > Would it help if I started a new doodle poll looking for a better time
    > slot or is the current slot =E2=80=9Cok=E2=80=9D and we all just need=
ed a
    > breather after traveling?

Breather, but the time is not great for me anymore.
(I know I will be unavailable next week for instance)

=2D-
Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
 -=3D IPv6 IoT consulting =3D-




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Date: Tue, 24 Nov 2015 12:12:49 -0800
From: "Toerless Eckert (eckert)" <eckert@cisco.com>
To: "Max Pritikin (pritikin)" <pritikin@cisco.com>
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Subject: Re: [Anima-bootstrap] DOODLE POLL: Bootstrap Design Meeting Rescheduling
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Ok, i am a bit confused: The dates show dates for this week,
so right now i just filled in the remaining possible dates for this
week (where i'll be in Denver and there is thanksgiving). Thats
probably wrong, right ? You mean to use this to decide for a regular
meeting time, right ? Pls advise, and i can update the time slots fitting
"normally".

What other possible team members do you have in mind ? I can check of
course the list of emails subscribed to anima-bootstrap, but those folks
should have received the doodle poll anyhow.

Cheers
    Toerless

On Tue, Nov 24, 2015 at 07:26:36PM +0000, Max Pritikin (pritikin) wrote:
> 
> Folks, 
> 
> Currently 3 people in addition to myself have filled out the doodle poll. 
> 
> The only slot that has everybody able to attend so far is Thursday at 10am (this week that is of course Thanksgiving and I don???t expect anybody would be there). When you fill your information in please strain to help find a slot everybody can join. 
> 
> I???ve added a couple more people to this email but perhaps Toerless or Sheng has direct emails for the other ???team members??? and could ping them directly? (Their email addr isn???t listed on the bootstrap wiki).  
> 
> - max
> 
> > On Nov 20, 2015, at 1:47 PM, Max Pritikin (pritikin) <pritikin@cisco.com> wrote:
> > 
> > 
> > ANIMA bootstrap design team has been meeting on Wed morning but attendance has been light with multiple conflicts lately. This poll is to see if a new time can be found.
> > 
> > Please fill in this poll if you???d like to be joining the bootstrap design team calls but haven???t been able to due to scheduling conflicts. 
> > 
> > Some notes:
> > 
> > I arbitrarily blocked some times for the meetings. If NONE of these work we can try to find some other slots (please suggest). 
> > 
> > The poll is for an entire week of days... but the date itself doesn???t matter. Please select the time that works most often for you for a recurring meeting. 
> > 
> > The timezone is set for central time??? but time zone support is enabled. Just remember to switch this to your time zone before filling in which times you would be available. 
> > 
> > Please enter your name in the input field and check the box for times that you are available.
> > 
> > http://doodle.com/poll/89t6v7mrvtv9txg7
> > 
> > 
> > - max
> > _______________________________________________
> > Anima-bootstrap mailing list
> > Anima-bootstrap@ietf.org
> > https://www.ietf.org/mailman/listinfo/anima-bootstrap


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From: "Max Pritikin (pritikin)" <pritikin@cisco.com>
To: "Toerless Eckert (eckert)" <eckert@cisco.com>
Thread-Topic: [Anima-bootstrap] DOODLE POLL: Bootstrap Design Meeting Rescheduling
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To: "Max Pritikin (pritikin)" <pritikin@cisco.com>, anima-bootstrap <anima-bootstrap@ietf.org>
References: <31DBE67A-30DD-48E9-A533-B854A5B4C79C@cisco.com> <1049515D-3512-441F-B14B-ED8FBE3A1EF6@cisco.com>
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
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Date: Wed, 25 Nov 2015 10:19:07 +1300
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Cc: "Toerless Eckert \(eckert\)" <eckert@cisco.com>, Kent Watsen <kwatsen@juniper.net>
Subject: Re: [Anima-bootstrap] DOODLE POLL: Bootstrap Design Meeting Rescheduling
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I've responded, but please don't take my "vote" as very
important - I'm here mainly to watch for issues that
directly affect GRASP, rather than to contribute.

Regards
   Brian

On 25/11/2015 08:26, Max Pritikin (pritikin) wrote:
>=20
> Folks,=20
>=20
> Currently 3 people in addition to myself have filled out the doodle pol=
l.=20
>=20
> The only slot that has everybody able to attend so far is Thursday at 1=
0am (this week that is of course Thanksgiving and I don=E2=80=99t expect =
anybody would be there). When you fill your information in please strain =
to help find a slot everybody can join.=20
>=20
> I=E2=80=99ve added a couple more people to this email but perhaps Toerl=
ess or Sheng has direct emails for the other =E2=80=9Cteam members=E2=80=9D=
 and could ping them directly? (Their email addr isn=E2=80=99t listed on =
the bootstrap wiki). =20
>=20
> - max
>=20
>> On Nov 20, 2015, at 1:47 PM, Max Pritikin (pritikin) <pritikin@cisco.c=
om> wrote:
>>
>>
>> ANIMA bootstrap design team has been meeting on Wed morning but attend=
ance has been light with multiple conflicts lately. This poll is to see i=
f a new time can be found.
>>
>> Please fill in this poll if you=E2=80=99d like to be joining the boots=
trap design team calls but haven=E2=80=99t been able to due to scheduling=
 conflicts.=20
>>
>> Some notes:
>>
>> I arbitrarily blocked some times for the meetings. If NONE of these wo=
rk we can try to find some other slots (please suggest).=20
>>
>> The poll is for an entire week of days... but the date itself doesn=E2=
=80=99t matter. Please select the time that works most often for you for =
a recurring meeting.=20
>>
>> The timezone is set for central time=E2=80=A6 but time zone support is=
 enabled. Just remember to switch this to your time zone before filling i=
n which times you would be available.=20
>>
>> Please enter your name in the input field and check the box for times =
that you are available.
>>
>> http://doodle.com/poll/89t6v7mrvtv9txg7
>>
>>
>> - max
>> _______________________________________________
>> Anima-bootstrap mailing list
>> Anima-bootstrap@ietf.org
>> https://www.ietf.org/mailman/listinfo/anima-bootstrap
>=20


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From: "Max Pritikin (pritikin)" <pritikin@cisco.com>
To: Brian E Carpenter <brian.e.carpenter@gmail.com>
Thread-Topic: [Anima-bootstrap] DOODLE POLL: Bootstrap Design Meeting Rescheduling
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References: <31DBE67A-30DD-48E9-A533-B854A5B4C79C@cisco.com> <1049515D-3512-441F-B14B-ED8FBE3A1EF6@cisco.com> <5654D44B.60906@gmail.com>
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From nobody Wed Nov 25 04:00:53 2015
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From: Robert Cragie <Robert.Cragie@arm.com>
To: "Max Pritikin (pritikin)" <pritikin@cisco.com>, Brian E Carpenter <brian.e.carpenter@gmail.com>
Thread-Topic: [Anima-bootstrap] DOODLE POLL: Bootstrap Design Meeting Rescheduling
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Subject: Re: [Anima-bootstrap] DOODLE POLL: Bootstrap Design Meeting Rescheduling
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Date: Wed, 25 Nov 2015 05:10:12 -0800
From: "Toerless Eckert (eckert)" <eckert@cisco.com>
To: Robert Cragie <Robert.Cragie@arm.com>
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References: <31DBE67A-30DD-48E9-A533-B854A5B4C79C@cisco.com> <1049515D-3512-441F-B14B-ED8FBE3A1EF6@cisco.com> <5654D44B.60906@gmail.com> <66260958-ED53-4308-9D20-B70BEB38641C@cisco.com> <AM3PR08MB07078CFA4CF03BD36A0AD950E2050@AM3PR08MB0707.eurprd08.prod.outlook.com>
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Cc: "Max Pritikin \(pritikin\)" <pritikin@cisco.com>, anima-bootstrap <anima-bootstrap@ietf.org>, Kent Watsen <kwatsen@juniper.net>
Subject: Re: [Anima-bootstrap] DOODLE POLL: Bootstrap Design Meeting Rescheduling
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Thanks, Robert

I found your insight when we discused bootstrap for example re. TTLS and
the like extremely helpfull. 

Is there any specific adjacency with ACE you're intersted in that we're 
not covering ?

Cheers
    Toerless

On Wed, Nov 25, 2015 at 12:00:23PM +0000, Robert Cragie wrote:
> I???m not sure I???ll be participating any more hence not contributing to the Doodle poll. Whilst ANIMA bootstrapping overlaps with the concepts in ACE, it seems distinct and divergent from the discussions we are having there so I will focus on that area whilst keeping an eye on developments in ANIMA.
> 
> Robert
> 
> From: Anima-bootstrap [mailto:anima-bootstrap-bounces@ietf.org] On Behalf Of Max Pritikin (pritikin)
> Sent: 24 November 2015 21:31
> To: Brian E Carpenter
> Cc: Toerless Eckert (eckert); anima-bootstrap; Kent Watsen
> Subject: Re: [Anima-bootstrap] DOODLE POLL: Bootstrap Design Meeting Rescheduling
> 
> Thanks. As you all can tell there isn???t an obvious winner
> 
> [cid:image001.jpg@01D12778.DD1143B0]
> - max
> 
> 
> On Nov 24, 2015, at 2:19 PM, Brian E Carpenter <brian.e.carpenter@gmail.com<mailto:brian.e.carpenter@gmail.com>> wrote:
> 
> I've responded, but please don't take my "vote" as very
> important - I'm here mainly to watch for issues that
> directly affect GRASP, rather than to contribute.
> 
> Regards
>   Brian
> 
> On 25/11/2015 08:26, Max Pritikin (pritikin) wrote:
> 
> 
> Folks,
> 
> Currently 3 people in addition to myself have filled out the doodle poll.
> 
> The only slot that has everybody able to attend so far is Thursday at 10am (this week that is of course Thanksgiving and I don???t expect anybody would be there). When you fill your information in please strain to help find a slot everybody can join.
> 
> I???ve added a couple more people to this email but perhaps Toerless or Sheng has direct emails for the other ???team members??? and could ping them directly? (Their email addr isn???t listed on the bootstrap wiki).
> 
> - max
> 
> 
> On Nov 20, 2015, at 1:47 PM, Max Pritikin (pritikin) <pritikin@cisco.com<mailto:pritikin@cisco.com>> wrote:
> 
> 
> ANIMA bootstrap design team has been meeting on Wed morning but attendance has been light with multiple conflicts lately. This poll is to see if a new time can be found.
> 
> Please fill in this poll if you???d like to be joining the bootstrap design team calls but haven???t been able to due to scheduling conflicts.
> 
> Some notes:
> 
> I arbitrarily blocked some times for the meetings. If NONE of these work we can try to find some other slots (please suggest).
> 
> The poll is for an entire week of days... but the date itself doesn???t matter. Please select the time that works most often for you for a recurring meeting.
> 
> The timezone is set for central time??? but time zone support is enabled. Just remember to switch this to your time zone before filling in which times you would be available.
> 
> Please enter your name in the input field and check the box for times that you are available.
> 
> http://doodle.com/poll/89t6v7mrvtv9txg7
> 
> 
> - max
> _______________________________________________
> Anima-bootstrap mailing list
> Anima-bootstrap@ietf.org<mailto:Anima-bootstrap@ietf.org>
> https://www.ietf.org/mailman/listinfo/anima-bootstrap
> 
> 
> 
> IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.



-- 
---
Toerless Eckert, eckert@cisco.com


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Subject: [Anima-bootstrap] IoT and scope of bootstrap
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--=-=-=
Content-Type: text/plain


I wrote some text this morning to clarify how IoT is included/excluded.
see: https://github.com/ietf-roll/anima-bootstrap/commits/master
(maybe would have been cleaner had I made it a pull request).

I also added a note about ACE, which I'll put in another email.


+      <section title="Scope of solution">
+        <t>
+          Questions have been posed as to whether this solution is suitable
+          in general for Internet of Things (IoT) networks.  In general the
+          answer is no, but the terminology of <xref target="RFC7228" /> is
+          best used to describe the boundaries.
+        </t>
+        <t>
+          The entire solution described in this document is aimed in general
+          at non-constrained (i.e. class 2+) devices  operating on a
+          non-Challenged network.
+          The entire solution described here is not intended to be useable
as-is
+          by constrained devices operating on challenged networks (such as
+          802.15.4 LLNs).
+        </t>
+        <t>
+          In many target applications, the systems
+          involved are large router platforms with multi-gigabit
+          inter-connections, mounted in controlled access data centers.  But
+          this solution is not exclusive to the large, it is intended to
+          scale to thousands of devices located in hostile environments,
such
+          as ISP provided CPE devices which are drop-shipped to the end
user.
+          The situation where an order is fulfilled from distributed
+          warehouse from a common stock and shipped directly to the target
+          location at the request of the domain owner is explicitely
+          supported.  That stock ("SKU") could be provided to a number of
+          potential domain owners, and the eventual domain owner will not
+          know a-priori which device will go to which location.
+        </t>
+        <t>
+          Specifically, there are protocol aspects described here which
might
+          result in congestion collapse or energy-exhaustion of intermediate
+          battery powered routers in an LLN.  Those types of networks SHOULD
+          NOT use this solution.
+        </t>
+        <t>
+          The imprint protocol described here could, however, be used by
+          non-energy constrained devices joining a non-constrained network
+          (for instance, smart light bulbs are usually mains powered, and
+          speak 802.11).  It could also be used by non-constrained devices
+          across a non-energy constrained, but challenged network (such as
+          802.15.4).
+        </t>
+        <t>
+          Some aspects are in scope for constrained devices on challenged
+          networks: the certificate contents, and the process by which the
+          four questions above are resolved is in scope.  It is simply the
+          actual on-the-wire imprint protocol which is likely inappropriate.
+        </t>
+      </section>



--
Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
 -= IPv6 IoT consulting =-




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From: "Michael Behringer (mbehring)" <mbehring@cisco.com>
To: "Toerless Eckert (eckert)" <eckert@cisco.com>, "Max Pritikin (pritikin)" <pritikin@cisco.com>, "Jason Coleman (colemaj)" <colemaj@cisco.com>, "mcr+ietf@sandelman.ca" <mcr+ietf@sandelman.ca>, "ietf@sandeep.de" <ietf@sandeep.de>, "alper.yegin@yegin.org" <alper.yegin@yegin.org>, "jiangsheng@huawei.com" <jiangsheng@huawei.com>, "leo.liubing@huawei.com" <leo.liubing@huawei.com>, "brian.e.carpenter@gmail.com" <brian.e.carpenter@gmail.com>, "kwatsen@juniper.net" <kwatsen@juniper.net>, "anima-bootstrap@ietf.org" <anima-bootstrap@ietf.org>
Thread-Topic: Weekly Webex invite for anima bootstrap team meeting
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Jason and I are on the call, but apparently we're the only ones who missed =
that today isn't happening.

We'll log off now, if this is still on please send a mail.

Michael


      -----Original Appointment-----
      From: Toerless Eckert (eckert)
      Sent: 20 June 2015 00:15
      To: Toerless Eckert (eckert); Max Pritikin (pritikin); Jason Coleman =
(colemaj); mcr+ietf@sandelman.ca; ietf@sandeep.de; Michael Behringer (mbehr=
ing); alper.yegin@yegin.org; jiangsheng@huawei.com; leo.liubing@huawei.com;=
 brian.e.carpenter@gmail.com; kwatsen@juniper.net; anima-bootstrap@ietf.org
      Subject: Weekly Webex invite for anima bootstrap team meeting
      When: 25 November 2015 07:00-08:00 (UTC-08:00) Pacific Time (US & Can=
ada).
      Where: Webex - Video/Audio



      So Wednesday 7 AM PST seems to be the best slot - it fits everybody e=
xcept Brian and myself, and I think I can get the other meeting moved. Mich=
ael Richardson also mentioned that we may be on/off 1 hour due to daylight =
saving times, so let me shoot the meeting invite out here with outlook and =
webex, and see if this still works for everybody else.


      Cheers
          Toerless


      -- Do not delete or change any of the following text. --


      Join WebEx meeting<https://cisco.webex.com/ciscosales/j.php?MTID=3Dma=
5a7178d02a2edcb0c6d7b43e5315f08>
      Meeting number: 200 557 721
      Meeting password: boot


      If you are the host, you can use the meeting host key to pass the hos=
t privilege to another participant or to start the meeting from a video con=
ferencing system or application. To find the host key for this meeting, go =
here.<https://cisco.webex.com/ciscosales/j.php?MTID=3Dm0ab0c7d2c43095ce03ec=
01239fd109bf>

      Join by phone
      +1-866-432-9903 Call-in toll-free number (US/Canada)
      +1-408-525-6800 Call-in toll number (US/Canada)
      Access code: 200 557 721
      Global call-in numbers<https://cisco.webex.com/ciscosales/globalcalli=
n.php?serviceType=3DMC&ED=3D317186532&tollFree=3D1>  |  Toll-free calling r=
estrictions<http://www.webex.com/pdf/tollfree_restrictions.pdf>


      Can't join the meeting? Contact support.<https://cisco.webex.com/cisc=
osales/mc>

      IMPORTANT NOTICE: Please note that this WebEx service allows audio an=
d other information sent during the session to be recorded, which may be di=
scoverable in a legal matter. By joining this session, you automatically co=
nsent to such recordings. If you do not consent to being recorded, discuss =
your concerns with the host or do not join the session..


--_000_b0bc02442e2c4dd0987b1f27868893c9XCHRCD006ciscocom_
Content-Type: text/html; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable

<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii"=
>
<meta name=3D"Generator" content=3D"Microsoft Exchange Server">
<!-- converted from rtf -->
<style><!-- .EmailQuote { margin-left: 1pt; padding-left: 4pt; border-left:=
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</head>
<body>
<font face=3D"Calibri" size=3D"2"><span style=3D"font-size:11pt;">
<div><font color=3D"#1F497D">Jason and I are on the call, but apparently we=
&#8217;re the only ones who missed that today isn&#8217;t happening. </font=
></div>
<div><font color=3D"#1F497D">&nbsp;</font></div>
<div><font color=3D"#1F497D">We&#8217;ll log off now, if this is still on p=
lease send a mail.</font></div>
<div><font color=3D"#1F497D">&nbsp;</font></div>
<div><font color=3D"#1F497D">Michael</font></div>
<div><font color=3D"#1F497D">&nbsp;</font></div>
<div><font color=3D"#1F497D">&nbsp;</font></div>
<div style=3D"padding-left:36pt;">-----Original Appointment-----<br>

<b>From:</b> Toerless Eckert (eckert) <br>

<b>Sent:</b> 20 June 2015 00:15<br>

<b>To:</b> Toerless Eckert (eckert); Max Pritikin (pritikin); Jason Coleman=
 (colemaj); mcr&#43;ietf@sandelman.ca; ietf@sandeep.de; Michael Behringer (=
mbehring); alper.yegin@yegin.org; jiangsheng@huawei.com; leo.liubing@huawei=
.com; brian.e.carpenter@gmail.com; kwatsen@juniper.net;
anima-bootstrap@ietf.org<br>

<b>Subject:</b> Weekly Webex invite for anima bootstrap team meeting<br>

<b>When:</b> 25 November 2015 07:00-08:00 (UTC-08:00) Pacific Time (US &amp=
; Canada).<br>

<b>Where:</b> Webex - Video/Audio</div>
<div style=3D"padding-left:36pt;">&nbsp;</div>
<div style=3D"padding-left:36pt;">&nbsp;</div>
<a name=3D"BM_BEGIN"></a>
<div style=3D"padding-left:36pt;"><font face=3D"Courier New" size=3D"3"><sp=
an style=3D"font-size:12pt;">&nbsp;</span></font></div>
<div style=3D"padding-left:36pt;"><font size=3D"1"><span style=3D"font-size=
:8pt;">So Wednesday 7 AM PST seems to be the best slot &#8211; it fits ever=
ybody except Brian and myself, and I think I can get the other meeting move=
d. Michael Richardson also mentioned that we
may be on/off 1 hour due to daylight saving times, so let me shoot the meet=
ing invite out here with outlook and webex, and see if this still works for=
 everybody else.</span></font></div>
<div style=3D"padding-left:36pt;"><br>

</div>
<div style=3D"padding-left:36pt;"><font size=3D"1"><span style=3D"font-size=
:8pt;">Cheers</span></font></div>
<div style=3D"padding-left:36pt;"><font size=3D"1"><span style=3D"font-size=
:8pt;">&nbsp;&nbsp;&nbsp; Toerless</span></font></div>
<div style=3D"padding-left:36pt;"><font face=3D"Arial" size=3D"1"><span sty=
le=3D"font-size:8pt;">&nbsp;
<br>

&nbsp; <br>

<font size=3D"2" color=3D"#666666"><span style=3D"font-size:10pt;">-</span>=
</font><a name=3D"MacBeginWBXTag"></a>- Do not delete or change any of the =
following text. --<font size=3D"1"><span style=3D"font-size:7.5pt;">&nbsp;&=
nbsp;
<br>

&nbsp; <br>

&nbsp; <br>

</span></font><a href=3D"https://cisco.webex.com/ciscosales/j.php?MTID=3Dma=
5a7178d02a2edcb0c6d7b43e5315f08"><font size=3D"3" color=3D"#00AFF9"><span s=
tyle=3D"font-size:12pt;"><u>Join WebEx meeting</u></span></font></a><font s=
ize=3D"4"><span style=3D"font-size:13.5pt;">&nbsp;&nbsp;
<br>

</span></font><font size=3D"2" color=3D"#666666"><span style=3D"font-size:1=
0pt;">Meeting number: 200 557 721</span></font><font size=3D"4"><span style=
=3D"font-size:13.5pt;">&nbsp;
<br>

</span></font><font size=3D"2" color=3D"#666666"><span style=3D"font-size:1=
0pt;">Meeting password:</span></font><font size=3D"4"><span style=3D"font-s=
ize:13.5pt;"> </span></font><font size=3D"2" color=3D"#666666"><span style=
=3D"font-size:10pt;">boot</span></font><font size=3D"4"><span style=3D"font=
-size:13.5pt;">&nbsp;
<br>

</span></font><font size=3D"1"><span style=3D"font-size:7.5pt;">&nbsp; <br>

<br>

</span></font><font size=3D"2" color=3D"#666666"><span style=3D"font-size:1=
0pt;">If you are the host, you can use the meeting host key to pass the hos=
t privilege to another participant or to start the meeting from a video con=
ferencing system or application. To find
the host key for this meeting, </span></font><a href=3D"https://cisco.webex=
.com/ciscosales/j.php?MTID=3Dm0ab0c7d2c43095ce03ec01239fd109bf"><font size=
=3D"2" color=3D"#00AFF9"><span style=3D"font-size:10pt;"><u>go here.</u></s=
pan></font></a><br>

<br>

<font size=3D"3" color=3D"#666666"><span style=3D"font-size:12pt;">Join by =
phone</span></font><font size=3D"4"><span style=3D"font-size:13.5pt;">&nbsp=
;
<br>

</span></font><font size=3D"2" color=3D"#666666"><span style=3D"font-size:1=
0pt;"><b>&#43;1-866-432-9903</b></span></font><font size=3D"2" color=3D"#66=
6666"><span style=3D"font-size:10pt;"> Call-in toll-free number (US/Canada)=
</span></font><font size=3D"4"><span style=3D"font-size:13.5pt;">&nbsp;
<br>

</span></font><font size=3D"2" color=3D"#666666"><span style=3D"font-size:1=
0pt;"><b>&#43;1-408-525-6800</b></span></font><font size=3D"2" color=3D"#66=
6666"><span style=3D"font-size:10pt;"> Call-in toll number (US/Canada)</spa=
n></font><font size=3D"4"><span style=3D"font-size:13.5pt;">&nbsp;
<br>

</span></font><font size=3D"2" color=3D"#666666"><span style=3D"font-size:1=
0pt;">Access code: 200 557 721</span></font><font size=3D"4"><span style=3D=
"font-size:13.5pt;">&nbsp;
<br>

</span></font><a href=3D"https://cisco.webex.com/ciscosales/globalcallin.ph=
p?serviceType=3DMC&amp;ED=3D317186532&amp;tollFree=3D1"><font size=3D"1" co=
lor=3D"#00AFF9"><span style=3D"font-size:7.5pt;"><u>Global call-in numbers<=
/u></span></font></a><font size=3D"1"><span style=3D"font-size:7.5pt;">&nbs=
p;
|&nbsp; </span></font><a href=3D"http://www.webex.com/pdf/tollfree_restrict=
ions.pdf"><font size=3D"1" color=3D"#00AFF9"><span style=3D"font-size:7.5pt=
;"><u>Toll-free calling restrictions</u></span></font></a><font size=3D"4">=
<span style=3D"font-size:13.5pt;">&nbsp;&nbsp;
<br>

</span></font><font size=3D"1"><span style=3D"font-size:7.5pt;">&nbsp; <br>

&nbsp; <br>

</span></font><font size=3D"1" color=3D"#666666"><span style=3D"font-size:7=
.5pt;">Can't join the meeting?</span></font><font size=3D"1"><span style=3D=
"font-size:7.5pt;"> </span></font><a href=3D"https://cisco.webex.com/ciscos=
ales/mc"><font size=3D"1" color=3D"#00AFF9"><span style=3D"font-size:7.5pt;=
"><u>Contact
support.</u></span></font></a><font size=3D"1"><span style=3D"font-size:7.5=
pt;">&nbsp;&nbsp; <br>

&nbsp; <br>

</span></font><font size=3D"1" color=3D"#A0A0A0"><span style=3D"font-size:7=
.5pt;">IMPORTANT NOTICE: Please note that this WebEx service allows audio a=
nd other information sent during the session to be recorded, which may be d=
iscoverable in a legal matter. By joining
this session, you automatically consent to such recordings. If you do not c=
onsent to being recorded, discuss your concerns with the host or do not joi=
n the session..</span></font><a name=3D"MacEndWBXTag"></a><font size=3D"1">=
<span style=3D"font-size:7.5pt;"> </span></font></span></font></div>
<div style=3D"padding-left:36pt;">&nbsp;</div>
</span></font>
</body>
</html>

--_000_b0bc02442e2c4dd0987b1f27868893c9XCHRCD006ciscocom_--


From nobody Wed Nov 25 07:15:02 2015
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Subject: [Anima-bootstrap] ACE and scope of bootstrap
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--=-=-=
Content-Type: text/plain


I wrote this to deal with any overlap with ACE.
ACE's charter specifically has the bootstrap between constrained node and
non-constrained helper (whether client or authorization server) out of scope.

+      <section title="Trust bootstrap">
+        <t>
+          The imprint protocol results in a secure relationship between the
+          domain registrar and the new device.  If the new device is
+          sufficiently constrained that the ACE protocol should be leveraged
+          for operation, (see <xref target="I-D.ietf-ace-actors" />), and
the
+          domain registrar is also the Client Authorization Server or the
+          Authorization Server, then it may be appropriate to use this
secure
+          channel to exchange ACE tokens.
+        </t>
+      </section>
     </section>

I am uncomfortable with the words "ACE tokens", but I don't know what else to
write.  I mean the thing that would represent the trust between Client <-> CAS.
I think that this may also be out-of-scope.  I don't propose to make it
in-scope for ANIMA, but to make it clear that ANIMA bootstrap will have
created a (D)TLS connection which could be reused for something else.
Or a stateless TLS session-resumption token could be exchanged for later use
by ACE.

--
Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
 -= IPv6 IoT consulting =-




--=-=-=
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--=-=-=--


From nobody Wed Nov 25 10:53:41 2015
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To: anima-bootstrap <anima-bootstrap@ietf.org>
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
Message-ID: <565603B6.3030508@gmail.com>
Date: Thu, 26 Nov 2015 07:53:42 +1300
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Subject: [Anima-bootstrap] Bootstrap discovery question
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Here's a hopefully simple question from the GRASP side of the house.

If the bootstrap uses GRASP discovery, what sort of locator will
it be trying to discover?

At the moment GRASP has four locator types in the design:

- IPv6 address
- IPv4 address
- FQDN
- URL

It's been suggested by a reviewer that the URL option is unnecessary.

Regards
   Brian


From nobody Wed Nov 25 11:14:12 2015
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Date: Wed, 25 Nov 2015 11:14:07 -0800
From: Toerless Eckert <eckert@cisco.com>
To: Brian E Carpenter <brian.e.carpenter@gmail.com>
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Subject: Re: [Anima-bootstrap] Bootstrap discovery question
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[cc'ing signaling team ? (hopefully this is ok. to keep everybody in sync]

Forget about bootstrap, but in general:

IMHO, URL/URI is the most important locator. When someone looks for a service/objective,
it ultimately needs to get everything to build a protocol connection to achieve this
objective/connect-to-this-service. Which means so much more than just IP* adress, but also
transport protocol, port, higher layer protocols, etc. pp.

Why the heck would we want to have to reinvent messaging elements to reinvent
signaling all those connection attributes if there is already one solution for this:
URI.

Example, bootstrap: The bootstrap proxy agent needs to discover the "an-registrar-enrollment"
service (i just made up that name, somebody had to do it ;-). In return i think you
would get back (according to RFC7030, 3.2.2):

https://<ipv6addr-of-registrar>{:<port>}/.well-known/est

Of course we could support multiple enrollment protocols, but every proxy that does
support rfc7030 would recognize this as a URI indicating RFC7030. This is because of
/.well-known/est. And it then knows the necessary transport protocol pieces: IPv6
addr and port and use of HTTPS. As a rule of thumb for services where the locator is
in the ACP, we would require IPv6 address so that we do not introduce the need for
ACP-wide DNS host-name lookup and registration.

If there is a way to reuse more/better our existing IETF toolset, please chime in.

Cheers
    Toerless

On Thu, Nov 26, 2015 at 07:53:42AM +1300, Brian E Carpenter wrote:
> Here's a hopefully simple question from the GRASP side of the house.
> 
> If the bootstrap uses GRASP discovery, what sort of locator will
> it be trying to discover?
> 
> At the moment GRASP has four locator types in the design:
> 
> - IPv6 address
> - IPv4 address
> - FQDN
> - URL
> 
> It's been suggested by a reviewer that the URL option is unnecessary.
> 
> Regards
>    Brian
> 
> _______________________________________________
> Anima-bootstrap mailing list
> Anima-bootstrap@ietf.org
> https://www.ietf.org/mailman/listinfo/anima-bootstrap

-- 
---
Toerless Eckert, eckert@cisco.com


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To: Toerless Eckert <eckert@cisco.com>
References: <565603B6.3030508@gmail.com> <20151125191407.GP29056@cisco.com>
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
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Subject: Re: [Anima-bootstrap] Bootstrap discovery question
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OK, I've cc'ed Joel as well since it was his review that triggered my question.

Agreed, if we want GRASP discovery to be capable of serving as a general-purpose
discovery tool, we don't really need to justify the FQDN or URI/URL options.
Joel's point was essentially the same as what you say below ("where the locator
is in the ACP, we would require IPv6 address so that we do not introduce the need
for ACP-wide DNS host-name lookup and registration"). So the FQDN and URI/URL
options are not for "normal" GRASP operation.

     Brian

On 26/11/2015 08:14, Toerless Eckert wrote:
> [cc'ing signaling team ? (hopefully this is ok. to keep everybody in sync]
> 
> Forget about bootstrap, but in general:
> 
> IMHO, URL/URI is the most important locator. When someone looks for a service/objective,
> it ultimately needs to get everything to build a protocol connection to achieve this
> objective/connect-to-this-service. Which means so much more than just IP* adress, but also
> transport protocol, port, higher layer protocols, etc. pp.
> 
> Why the heck would we want to have to reinvent messaging elements to reinvent
> signaling all those connection attributes if there is already one solution for this:
> URI.
> 
> Example, bootstrap: The bootstrap proxy agent needs to discover the "an-registrar-enrollment"
> service (i just made up that name, somebody had to do it ;-). In return i think you
> would get back (according to RFC7030, 3.2.2):
> 
> https://<ipv6addr-of-registrar>{:<port>}/.well-known/est
> 
> Of course we could support multiple enrollment protocols, but every proxy that does
> support rfc7030 would recognize this as a URI indicating RFC7030. This is because of
> /.well-known/est. And it then knows the necessary transport protocol pieces: IPv6
> addr and port and use of HTTPS. As a rule of thumb for services where the locator is
> in the ACP, we would require IPv6 address so that we do not introduce the need for
> ACP-wide DNS host-name lookup and registration.
> 
> If there is a way to reuse more/better our existing IETF toolset, please chime in.
> 
> Cheers
>     Toerless
> 
> On Thu, Nov 26, 2015 at 07:53:42AM +1300, Brian E Carpenter wrote:
>> Here's a hopefully simple question from the GRASP side of the house.
>>
>> If the bootstrap uses GRASP discovery, what sort of locator will
>> it be trying to discover?
>>
>> At the moment GRASP has four locator types in the design:
>>
>> - IPv6 address
>> - IPv4 address
>> - FQDN
>> - URL
>>
>> It's been suggested by a reviewer that the URL option is unnecessary.
>>
>> Regards
>>    Brian
>>
>> _______________________________________________
>> Anima-bootstrap mailing list
>> Anima-bootstrap@ietf.org
>> https://www.ietf.org/mailman/listinfo/anima-bootstrap
> 


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Yes, the key for me is what these "locators" are for.  If they are for 
Anima Applications, that makes sense.  I can believe that there 
applications for which a URL is a good location.  If they are for the 
bootstrap process itself, that seems problematic.

I will also note in passing that trying to use a URL as a way of 
bundling several related but separate pieces of information seems 
problematic.  Even burying the IP address and port number in the URL 
domain portion does not seem to be a good idea unless that same URL is 
what is to be used to send the resulting messages (for example if the 
service were on top of SOAP).

Yours,
Joel

On 11/25/15 2:30 PM, Brian E Carpenter wrote:
> OK, I've cc'ed Joel as well since it was his review that triggered my question.
>
> Agreed, if we want GRASP discovery to be capable of serving as a general-purpose
> discovery tool, we don't really need to justify the FQDN or URI/URL options.
> Joel's point was essentially the same as what you say below ("where the locator
> is in the ACP, we would require IPv6 address so that we do not introduce the need
> for ACP-wide DNS host-name lookup and registration"). So the FQDN and URI/URL
> options are not for "normal" GRASP operation.
>
>       Brian
>
> On 26/11/2015 08:14, Toerless Eckert wrote:
>> [cc'ing signaling team ? (hopefully this is ok. to keep everybody in sync]
>>
>> Forget about bootstrap, but in general:
>>
>> IMHO, URL/URI is the most important locator. When someone looks for a service/objective,
>> it ultimately needs to get everything to build a protocol connection to achieve this
>> objective/connect-to-this-service. Which means so much more than just IP* adress, but also
>> transport protocol, port, higher layer protocols, etc. pp.
>>
>> Why the heck would we want to have to reinvent messaging elements to reinvent
>> signaling all those connection attributes if there is already one solution for this:
>> URI.
>>
>> Example, bootstrap: The bootstrap proxy agent needs to discover the "an-registrar-enrollment"
>> service (i just made up that name, somebody had to do it ;-). In return i think you
>> would get back (according to RFC7030, 3.2.2):
>>
>> https://<ipv6addr-of-registrar>{:<port>}/.well-known/est
>>
>> Of course we could support multiple enrollment protocols, but every proxy that does
>> support rfc7030 would recognize this as a URI indicating RFC7030. This is because of
>> /.well-known/est. And it then knows the necessary transport protocol pieces: IPv6
>> addr and port and use of HTTPS. As a rule of thumb for services where the locator is
>> in the ACP, we would require IPv6 address so that we do not introduce the need for
>> ACP-wide DNS host-name lookup and registration.
>>
>> If there is a way to reuse more/better our existing IETF toolset, please chime in.
>>
>> Cheers
>>      Toerless
>>
>> On Thu, Nov 26, 2015 at 07:53:42AM +1300, Brian E Carpenter wrote:
>>> Here's a hopefully simple question from the GRASP side of the house.
>>>
>>> If the bootstrap uses GRASP discovery, what sort of locator will
>>> it be trying to discover?
>>>
>>> At the moment GRASP has four locator types in the design:
>>>
>>> - IPv6 address
>>> - IPv4 address
>>> - FQDN
>>> - URL
>>>
>>> It's been suggested by a reviewer that the URL option is unnecessary.
>>>
>>> Regards
>>>     Brian
>>>
>>> _______________________________________________
>>> Anima-bootstrap mailing list
>>> Anima-bootstrap@ietf.org
>>> https://www.ietf.org/mailman/listinfo/anima-bootstrap
>>
>


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Date: Wed, 25 Nov 2015 12:05:56 -0800
From: Toerless Eckert <eckert@cisco.com>
To: Brian E Carpenter <brian.e.carpenter@gmail.com>
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Subject: Re: [Anima-bootstrap] Bootstrap discovery question
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On Thu, Nov 26, 2015 at 08:30:07AM +1300, Brian E Carpenter wrote:
> OK, I've cc'ed Joel as well since it was his review that triggered my question.
> 
> Agreed, if we want GRASP discovery to be capable of serving as a general-purpose
> discovery tool, we don't really need to justify the FQDN or URI/URL options.

RIght.

> Joel's point was essentially the same as what you say below ("where the locator
> is in the ACP, we would require IPv6 address so that we do not introduce the need
> for ACP-wide DNS host-name lookup and registration"). 

Yes, but as i outlined above, the IPv6 address alone is not sufficient because we
also need other locator pieces (port, L4-protocoll security protocols, etc. pp). And
all of that is in the URL.

In fact, i was arguing that IP* address or FQDN are unnecessary as explicit locator
objects. Just as in a browser: you enter www.foobar.com or 10.0.0.1, but its just an
abbreviation for http://www.foobar.com or http://10.0.0.1. But abbreviations make
only sense for human interfaces or if you're really in desparate need of saving bytes. I
hope neither applies to GARP. If we really want abbreviations, we should really
define it that way:

locator field contains a URL or abbreviated URL. An abbreviated URL is only
permissible if for the service requested there is a clear specification what
the default parameters are that can be abbreviated away.

> So the FQDN and URI/URL > options are not for "normal" GRASP operation.

?? Not clear .

The other point i made was that we should mandate use of IPv6 addresses in the URL
as long as it points to an objective in the ACP. Did you mean to refer to that piece ?
> 
> On 26/11/2015 08:14, Toerless Eckert wrote:
> > [cc'ing signaling team ? (hopefully this is ok. to keep everybody in sync]
> > 
> > Forget about bootstrap, but in general:
> > 
> > IMHO, URL/URI is the most important locator. When someone looks for a service/objective,
> > it ultimately needs to get everything to build a protocol connection to achieve this
> > objective/connect-to-this-service. Which means so much more than just IP* adress, but also
> > transport protocol, port, higher layer protocols, etc. pp.
> > 
> > Why the heck would we want to have to reinvent messaging elements to reinvent
> > signaling all those connection attributes if there is already one solution for this:
> > URI.
> > 
> > Example, bootstrap: The bootstrap proxy agent needs to discover the "an-registrar-enrollment"
> > service (i just made up that name, somebody had to do it ;-). In return i think you
> > would get back (according to RFC7030, 3.2.2):
> > 
> > https://<ipv6addr-of-registrar>{:<port>}/.well-known/est
> > 
> > Of course we could support multiple enrollment protocols, but every proxy that does
> > support rfc7030 would recognize this as a URI indicating RFC7030. This is because of
> > /.well-known/est. And it then knows the necessary transport protocol pieces: IPv6
> > addr and port and use of HTTPS. As a rule of thumb for services where the locator is
> > in the ACP, we would require IPv6 address so that we do not introduce the need for
> > ACP-wide DNS host-name lookup and registration.
> > 
> > If there is a way to reuse more/better our existing IETF toolset, please chime in.
> > 
> > Cheers
> >     Toerless
> > 
> > On Thu, Nov 26, 2015 at 07:53:42AM +1300, Brian E Carpenter wrote:
> >> Here's a hopefully simple question from the GRASP side of the house.
> >>
> >> If the bootstrap uses GRASP discovery, what sort of locator will
> >> it be trying to discover?
> >>
> >> At the moment GRASP has four locator types in the design:
> >>
> >> - IPv6 address
> >> - IPv4 address
> >> - FQDN
> >> - URL
> >>
> >> It's been suggested by a reviewer that the URL option is unnecessary.
> >>
> >> Regards
> >>    Brian
> >>
> >> _______________________________________________
> >> Anima-bootstrap mailing list
> >> Anima-bootstrap@ietf.org
> >> https://www.ietf.org/mailman/listinfo/anima-bootstrap
> > 

-- 
---
Toerless Eckert, eckert@cisco.com


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Date: Wed, 25 Nov 2015 12:17:11 -0800
From: Toerless Eckert <eckert@cisco.com>
To: "Joel M. Halpern" <jmh@joelhalpern.com>
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References: <565603B6.3030508@gmail.com> <20151125191407.GP29056@cisco.com> <56560C3F.9030304@gmail.com> <565613CC.1040903@joelhalpern.com>
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Subject: Re: [Anima-bootstrap] Bootstrap discovery question
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On Wed, Nov 25, 2015 at 03:02:20PM -0500, Joel M. Halpern wrote:
> Yes, the key for me is what these "locators" are for.  If they are for 
> Anima Applications, that makes sense.  I can believe that there 
> applications for which a URL is a good location.  If they are for the 
> bootstrap process itself, that seems problematic.

What is bad about rfc7030 ? https://<registrars-ipv6>//.wellknown/est

How else would you want to indicate that you can support bootstrap via RFC7030 ?
Thats how it's defined. Only important details is not to use an FQDN for the
IP address of the URL.

> I will also note in passing that trying to use a URL as a way of 
> bundling several related but separate pieces of information seems 
> problematic.

Whot ??? Why the heck do we have URLs ? The pieces in a URL are not several,
unrelated pieces of information. The idea is to have URLs describing the minimum
necessary pieces of information to actually locate a service.

> Even burying the IP address and port number in the URL 
> domain portion does not seem to be a good idea unless that same URL is 
> what is to be used to send the resulting messages (for example if the 
> service were on top of SOAP).

The EST connection would be established to the IPv6 address in the URL, right.

There is no need for hostname DNS in ACP. Hostnames are just an optimization
for services provided by only one host. I haven't seen a requirement to make
ACP ervice discovery depend on having this redundant layer.

Btw: The rfc7030 trust model for https:// between client and registrar in the ACP is
NOT based on the client believing registrar.domain is valid because of some bogus
CA signed cert for "registrar.domain", but because of

a) The connection runs across an end-to-end trusted/encrypted transport (ACP).
b) The IPv6 address of the registrar and the client are derived from their certificates.
   Aka: This is similar to the "registrar.domain" trust, only that its mutual
   and not dependent on random CAs, but both registrar and client cert are from the
   same CA.

Cheers
    Toerless

> 
> Yours,
> Joel
> 
> On 11/25/15 2:30 PM, Brian E Carpenter wrote:
> >OK, I've cc'ed Joel as well since it was his review that triggered my 
> >question.
> >
> >Agreed, if we want GRASP discovery to be capable of serving as a 
> >general-purpose
> >discovery tool, we don't really need to justify the FQDN or URI/URL 
> >options.
> >Joel's point was essentially the same as what you say below ("where the 
> >locator
> >is in the ACP, we would require IPv6 address so that we do not introduce 
> >the need
> >for ACP-wide DNS host-name lookup and registration"). So the FQDN and 
> >URI/URL
> >options are not for "normal" GRASP operation.
> >
> >      Brian
> >
> >On 26/11/2015 08:14, Toerless Eckert wrote:
> >>[cc'ing signaling team ? (hopefully this is ok. to keep everybody in sync]
> >>
> >>Forget about bootstrap, but in general:
> >>
> >>IMHO, URL/URI is the most important locator. When someone looks for a 
> >>service/objective,
> >>it ultimately needs to get everything to build a protocol connection to 
> >>achieve this
> >>objective/connect-to-this-service. Which means so much more than just IP* 
> >>adress, but also
> >>transport protocol, port, higher layer protocols, etc. pp.
> >>
> >>Why the heck would we want to have to reinvent messaging elements to 
> >>reinvent
> >>signaling all those connection attributes if there is already one 
> >>solution for this:
> >>URI.
> >>
> >>Example, bootstrap: The bootstrap proxy agent needs to discover the 
> >>"an-registrar-enrollment"
> >>service (i just made up that name, somebody had to do it ;-). In return i 
> >>think you
> >>would get back (according to RFC7030, 3.2.2):
> >>
> >>https://<ipv6addr-of-registrar>{:<port>}/.well-known/est
> >>
> >>Of course we could support multiple enrollment protocols, but every proxy 
> >>that does
> >>support rfc7030 would recognize this as a URI indicating RFC7030. This is 
> >>because of
> >>/.well-known/est. And it then knows the necessary transport protocol 
> >>pieces: IPv6
> >>addr and port and use of HTTPS. As a rule of thumb for services where the 
> >>locator is
> >>in the ACP, we would require IPv6 address so that we do not introduce the 
> >>need for
> >>ACP-wide DNS host-name lookup and registration.
> >>
> >>If there is a way to reuse more/better our existing IETF toolset, please 
> >>chime in.
> >>
> >>Cheers
> >>     Toerless
> >>
> >>On Thu, Nov 26, 2015 at 07:53:42AM +1300, Brian E Carpenter wrote:
> >>>Here's a hopefully simple question from the GRASP side of the house.
> >>>
> >>>If the bootstrap uses GRASP discovery, what sort of locator will
> >>>it be trying to discover?
> >>>
> >>>At the moment GRASP has four locator types in the design:
> >>>
> >>>- IPv6 address
> >>>- IPv4 address
> >>>- FQDN
> >>>- URL
> >>>
> >>>It's been suggested by a reviewer that the URL option is unnecessary.
> >>>
> >>>Regards
> >>>    Brian
> >>>
> >>>_______________________________________________
> >>>Anima-bootstrap mailing list
> >>>Anima-bootstrap@ietf.org
> >>>https://www.ietf.org/mailman/listinfo/anima-bootstrap
> >>
> >

-- 
---
Toerless Eckert, eckert@cisco.com


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To: Toerless Eckert <eckert@cisco.com>
References: <565603B6.3030508@gmail.com> <20151125191407.GP29056@cisco.com> <56560C3F.9030304@gmail.com> <565613CC.1040903@joelhalpern.com> <20151125201711.GR29056@cisco.com>
From: "Joel M. Halpern" <jmh@joelhalpern.com>
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Date: Wed, 25 Nov 2015 15:20:46 -0500
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Subject: Re: [Anima-bootstrap] Bootstrap discovery question
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There are two issues for me.

First, as far as I can tell, 7030 actually runs over HTTP.  As such, it 
makes good sense to use URLs.  ACP and GRASP do not run over HTTP.

Second, the document does not say that we use 7030 well known URLs.  It 
says that you can use any old URL.  I can believe that with suitable 
restrictions, there are URLs that can be used.  But the document does 
not place any such restrictions.

yours,
Joel

On 11/25/15 3:17 PM, Toerless Eckert wrote:
> On Wed, Nov 25, 2015 at 03:02:20PM -0500, Joel M. Halpern wrote:
>> Yes, the key for me is what these "locators" are for.  If they are for
>> Anima Applications, that makes sense.  I can believe that there
>> applications for which a URL is a good location.  If they are for the
>> bootstrap process itself, that seems problematic.
>
> What is bad about rfc7030 ? https://<registrars-ipv6>//.wellknown/est
>
> How else would you want to indicate that you can support bootstrap via RFC7030 ?
> Thats how it's defined. Only important details is not to use an FQDN for the
> IP address of the URL.
>
>> I will also note in passing that trying to use a URL as a way of
>> bundling several related but separate pieces of information seems
>> problematic.
>
> Whot ??? Why the heck do we have URLs ? The pieces in a URL are not several,
> unrelated pieces of information. The idea is to have URLs describing the minimum
> necessary pieces of information to actually locate a service.
>
>> Even burying the IP address and port number in the URL
>> domain portion does not seem to be a good idea unless that same URL is
>> what is to be used to send the resulting messages (for example if the
>> service were on top of SOAP).
>
> The EST connection would be established to the IPv6 address in the URL, right.
>
> There is no need for hostname DNS in ACP. Hostnames are just an optimization
> for services provided by only one host. I haven't seen a requirement to make
> ACP ervice discovery depend on having this redundant layer.
>
> Btw: The rfc7030 trust model for https:// between client and registrar in the ACP is
> NOT based on the client believing registrar.domain is valid because of some bogus
> CA signed cert for "registrar.domain", but because of
>
> a) The connection runs across an end-to-end trusted/encrypted transport (ACP).
> b) The IPv6 address of the registrar and the client are derived from their certificates.
>     Aka: This is similar to the "registrar.domain" trust, only that its mutual
>     and not dependent on random CAs, but both registrar and client cert are from the
>     same CA.
>
> Cheers
>      Toerless
>
>>
>> Yours,
>> Joel
>>
>> On 11/25/15 2:30 PM, Brian E Carpenter wrote:
>>> OK, I've cc'ed Joel as well since it was his review that triggered my
>>> question.
>>>
>>> Agreed, if we want GRASP discovery to be capable of serving as a
>>> general-purpose
>>> discovery tool, we don't really need to justify the FQDN or URI/URL
>>> options.
>>> Joel's point was essentially the same as what you say below ("where the
>>> locator
>>> is in the ACP, we would require IPv6 address so that we do not introduce
>>> the need
>>> for ACP-wide DNS host-name lookup and registration"). So the FQDN and
>>> URI/URL
>>> options are not for "normal" GRASP operation.
>>>
>>>       Brian
>>>
>>> On 26/11/2015 08:14, Toerless Eckert wrote:
>>>> [cc'ing signaling team ? (hopefully this is ok. to keep everybody in sync]
>>>>
>>>> Forget about bootstrap, but in general:
>>>>
>>>> IMHO, URL/URI is the most important locator. When someone looks for a
>>>> service/objective,
>>>> it ultimately needs to get everything to build a protocol connection to
>>>> achieve this
>>>> objective/connect-to-this-service. Which means so much more than just IP*
>>>> adress, but also
>>>> transport protocol, port, higher layer protocols, etc. pp.
>>>>
>>>> Why the heck would we want to have to reinvent messaging elements to
>>>> reinvent
>>>> signaling all those connection attributes if there is already one
>>>> solution for this:
>>>> URI.
>>>>
>>>> Example, bootstrap: The bootstrap proxy agent needs to discover the
>>>> "an-registrar-enrollment"
>>>> service (i just made up that name, somebody had to do it ;-). In return i
>>>> think you
>>>> would get back (according to RFC7030, 3.2.2):
>>>>
>>>> https://<ipv6addr-of-registrar>{:<port>}/.well-known/est
>>>>
>>>> Of course we could support multiple enrollment protocols, but every proxy
>>>> that does
>>>> support rfc7030 would recognize this as a URI indicating RFC7030. This is
>>>> because of
>>>> /.well-known/est. And it then knows the necessary transport protocol
>>>> pieces: IPv6
>>>> addr and port and use of HTTPS. As a rule of thumb for services where the
>>>> locator is
>>>> in the ACP, we would require IPv6 address so that we do not introduce the
>>>> need for
>>>> ACP-wide DNS host-name lookup and registration.
>>>>
>>>> If there is a way to reuse more/better our existing IETF toolset, please
>>>> chime in.
>>>>
>>>> Cheers
>>>>      Toerless
>>>>
>>>> On Thu, Nov 26, 2015 at 07:53:42AM +1300, Brian E Carpenter wrote:
>>>>> Here's a hopefully simple question from the GRASP side of the house.
>>>>>
>>>>> If the bootstrap uses GRASP discovery, what sort of locator will
>>>>> it be trying to discover?
>>>>>
>>>>> At the moment GRASP has four locator types in the design:
>>>>>
>>>>> - IPv6 address
>>>>> - IPv4 address
>>>>> - FQDN
>>>>> - URL
>>>>>
>>>>> It's been suggested by a reviewer that the URL option is unnecessary.
>>>>>
>>>>> Regards
>>>>>     Brian
>>>>>
>>>>> _______________________________________________
>>>>> Anima-bootstrap mailing list
>>>>> Anima-bootstrap@ietf.org
>>>>> https://www.ietf.org/mailman/listinfo/anima-bootstrap
>>>>
>>>
>


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To: "Joel M. Halpern" <jmh@joelhalpern.com>, Toerless Eckert <eckert@cisco.com>
References: <565603B6.3030508@gmail.com> <20151125191407.GP29056@cisco.com> <56560C3F.9030304@gmail.com> <565613CC.1040903@joelhalpern.com> <20151125201711.GR29056@cisco.com> <5656181E.4000908@joelhalpern.com>
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
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Date: Thu, 26 Nov 2015 10:12:15 +1300
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Cc: anima-bootstrap <anima-bootstrap@ietf.org>, anima-signaling@ietf.org
Subject: Re: [Anima-bootstrap] Bootstrap discovery question
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On 26/11/2015 09:20, Joel M. Halpern wrote:
> There are two issues for me.
> 
> First, as far as I can tell, 7030 actually runs over HTTP.  As such, it makes good sense to use URLs.  ACP and GRASP do not run
> over HTTP.
> 
> Second, the document does not say that we use 7030 well known URLs.  It says that you can use any old URL.  I can believe that
> with suitable restrictions, there are URLs that can be used.  But the document does not place any such restrictions.

I think that's reasonable, because GRASP (discovery) is just a carrier
for this information.

But I definitely disagree with Toerless that it would be reasonable to
use a URI format for the purpose of carrying an (ACP) IP address. It's
a very inefficient way to carry a 128 bit quantity that in the GRASP
context is only needed for socket calls, so it never needs to be parsed
or presented to a human.

    Brian

> 
> yours,
> Joel
> 
> On 11/25/15 3:17 PM, Toerless Eckert wrote:
>> On Wed, Nov 25, 2015 at 03:02:20PM -0500, Joel M. Halpern wrote:
>>> Yes, the key for me is what these "locators" are for.  If they are for
>>> Anima Applications, that makes sense.  I can believe that there
>>> applications for which a URL is a good location.  If they are for the
>>> bootstrap process itself, that seems problematic.
>>
>> What is bad about rfc7030 ? https://<registrars-ipv6>//.wellknown/est
>>
>> How else would you want to indicate that you can support bootstrap via RFC7030 ?
>> Thats how it's defined. Only important details is not to use an FQDN for the
>> IP address of the URL.
>>
>>> I will also note in passing that trying to use a URL as a way of
>>> bundling several related but separate pieces of information seems
>>> problematic.
>>
>> Whot ??? Why the heck do we have URLs ? The pieces in a URL are not several,
>> unrelated pieces of information. The idea is to have URLs describing the minimum
>> necessary pieces of information to actually locate a service.
>>
>>> Even burying the IP address and port number in the URL
>>> domain portion does not seem to be a good idea unless that same URL is
>>> what is to be used to send the resulting messages (for example if the
>>> service were on top of SOAP).
>>
>> The EST connection would be established to the IPv6 address in the URL, right.
>>
>> There is no need for hostname DNS in ACP. Hostnames are just an optimization
>> for services provided by only one host. I haven't seen a requirement to make
>> ACP ervice discovery depend on having this redundant layer.
>>
>> Btw: The rfc7030 trust model for https:// between client and registrar in the ACP is
>> NOT based on the client believing registrar.domain is valid because of some bogus
>> CA signed cert for "registrar.domain", but because of
>>
>> a) The connection runs across an end-to-end trusted/encrypted transport (ACP).
>> b) The IPv6 address of the registrar and the client are derived from their certificates.
>>     Aka: This is similar to the "registrar.domain" trust, only that its mutual
>>     and not dependent on random CAs, but both registrar and client cert are from the
>>     same CA.
>>
>> Cheers
>>      Toerless
>>
>>>
>>> Yours,
>>> Joel
>>>
>>> On 11/25/15 2:30 PM, Brian E Carpenter wrote:
>>>> OK, I've cc'ed Joel as well since it was his review that triggered my
>>>> question.
>>>>
>>>> Agreed, if we want GRASP discovery to be capable of serving as a
>>>> general-purpose
>>>> discovery tool, we don't really need to justify the FQDN or URI/URL
>>>> options.
>>>> Joel's point was essentially the same as what you say below ("where the
>>>> locator
>>>> is in the ACP, we would require IPv6 address so that we do not introduce
>>>> the need
>>>> for ACP-wide DNS host-name lookup and registration"). So the FQDN and
>>>> URI/URL
>>>> options are not for "normal" GRASP operation.
>>>>
>>>>       Brian
>>>>
>>>> On 26/11/2015 08:14, Toerless Eckert wrote:
>>>>> [cc'ing signaling team ? (hopefully this is ok. to keep everybody in sync]
>>>>>
>>>>> Forget about bootstrap, but in general:
>>>>>
>>>>> IMHO, URL/URI is the most important locator. When someone looks for a
>>>>> service/objective,
>>>>> it ultimately needs to get everything to build a protocol connection to
>>>>> achieve this
>>>>> objective/connect-to-this-service. Which means so much more than just IP*
>>>>> adress, but also
>>>>> transport protocol, port, higher layer protocols, etc. pp.
>>>>>
>>>>> Why the heck would we want to have to reinvent messaging elements to
>>>>> reinvent
>>>>> signaling all those connection attributes if there is already one
>>>>> solution for this:
>>>>> URI.
>>>>>
>>>>> Example, bootstrap: The bootstrap proxy agent needs to discover the
>>>>> "an-registrar-enrollment"
>>>>> service (i just made up that name, somebody had to do it ;-). In return i
>>>>> think you
>>>>> would get back (according to RFC7030, 3.2.2):
>>>>>
>>>>> https://<ipv6addr-of-registrar>{:<port>}/.well-known/est
>>>>>
>>>>> Of course we could support multiple enrollment protocols, but every proxy
>>>>> that does
>>>>> support rfc7030 would recognize this as a URI indicating RFC7030. This is
>>>>> because of
>>>>> /.well-known/est. And it then knows the necessary transport protocol
>>>>> pieces: IPv6
>>>>> addr and port and use of HTTPS. As a rule of thumb for services where the
>>>>> locator is
>>>>> in the ACP, we would require IPv6 address so that we do not introduce the
>>>>> need for
>>>>> ACP-wide DNS host-name lookup and registration.
>>>>>
>>>>> If there is a way to reuse more/better our existing IETF toolset, please
>>>>> chime in.
>>>>>
>>>>> Cheers
>>>>>      Toerless
>>>>>
>>>>> On Thu, Nov 26, 2015 at 07:53:42AM +1300, Brian E Carpenter wrote:
>>>>>> Here's a hopefully simple question from the GRASP side of the house.
>>>>>>
>>>>>> If the bootstrap uses GRASP discovery, what sort of locator will
>>>>>> it be trying to discover?
>>>>>>
>>>>>> At the moment GRASP has four locator types in the design:
>>>>>>
>>>>>> - IPv6 address
>>>>>> - IPv4 address
>>>>>> - FQDN
>>>>>> - URL
>>>>>>
>>>>>> It's been suggested by a reviewer that the URL option is unnecessary.
>>>>>>
>>>>>> Regards
>>>>>>     Brian
>>>>>>
>>>>>> _______________________________________________
>>>>>> Anima-bootstrap mailing list
>>>>>> Anima-bootstrap@ietf.org
>>>>>> https://www.ietf.org/mailman/listinfo/anima-bootstrap
>>>>>
>>>>
>>
> 


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Date: Wed, 25 Nov 2015 13:18:59 -0800
From: Toerless Eckert <eckert@cisco.com>
To: "Joel M. Halpern" <jmh@joelhalpern.com>
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Cc: anima-bootstrap <anima-bootstrap@ietf.org>, anima-signaling@ietf.org
Subject: Re: [Anima-bootstrap] Bootstrap discovery question
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On Wed, Nov 25, 2015 at 03:20:46PM -0500, Joel M. Halpern wrote:
> There are two issues for me.
> 
> First, as far as I can tell, 7030 actually runs over HTTP.  As such, it 
> makes good sense to use URLs.

https actually.

> ACP and GRASP do not run over HTTP.

Right. 

But my argument for URLs was not meant to be limited to services on top of
http(s), but generic. URLs are the IETFs way to locate resources. IMHO
an objective/service is well characterised as being a subset of resources.

> Second, the document does not say that we use 7030 well known URLs.  It 
> says that you can use any old URL.  I can believe that with suitable 
> restrictions, there are URLs that can be used.  But the document does 
> not place any such restrictions.

Sure, we can look into refining the wording.

Also, my answer wasn't meant to be conclusive, just to say that URL is
better/more important than IP* address or FQDN.

My open AI is this: Whenever GRASP tries to find a service for which
parameters are needed, we should tr try to avoid reinventing the wheel
how to define / register those attributes. FOr some services/parameters,
URLs do a great job for this, eg: port-number for many TCP/UDP services
with URLs defined. For other services, DNS-SD does a pretty good job
via the parameteres of the SRV and TXT records. So i would like to see
how much of this we could reuse in GRASP. 

For example, DNS-SD permits to encode a lot of parameters as
<param>=<value> concatenated via ";" into TXT record. Lets assume some
GRASP objective/service needs to indicate such parameters. How should we
encode them when using GRASP ? 

Have in GRASP also such a "parameter" element ? Break up the TXT
into individual JSON/CBOR string/value attributes ? Append them to the URL...

Cheers
    toerless

> yours,
> Joel
> 
> On 11/25/15 3:17 PM, Toerless Eckert wrote:
> >On Wed, Nov 25, 2015 at 03:02:20PM -0500, Joel M. Halpern wrote:
> >>Yes, the key for me is what these "locators" are for.  If they are for
> >>Anima Applications, that makes sense.  I can believe that there
> >>applications for which a URL is a good location.  If they are for the
> >>bootstrap process itself, that seems problematic.
> >
> >What is bad about rfc7030 ? https://<registrars-ipv6>//.wellknown/est
> >
> >How else would you want to indicate that you can support bootstrap via 
> >RFC7030 ?
> >Thats how it's defined. Only important details is not to use an FQDN for 
> >the
> >IP address of the URL.
> >
> >>I will also note in passing that trying to use a URL as a way of
> >>bundling several related but separate pieces of information seems
> >>problematic.
> >
> >Whot ??? Why the heck do we have URLs ? The pieces in a URL are not 
> >several,
> >unrelated pieces of information. The idea is to have URLs describing the 
> >minimum
> >necessary pieces of information to actually locate a service.
> >
> >>Even burying the IP address and port number in the URL
> >>domain portion does not seem to be a good idea unless that same URL is
> >>what is to be used to send the resulting messages (for example if the
> >>service were on top of SOAP).
> >
> >The EST connection would be established to the IPv6 address in the URL, 
> >right.
> >
> >There is no need for hostname DNS in ACP. Hostnames are just an 
> >optimization
> >for services provided by only one host. I haven't seen a requirement to 
> >make
> >ACP ervice discovery depend on having this redundant layer.
> >
> >Btw: The rfc7030 trust model for https:// between client and registrar in 
> >the ACP is
> >NOT based on the client believing registrar.domain is valid because of 
> >some bogus
> >CA signed cert for "registrar.domain", but because of
> >
> >a) The connection runs across an end-to-end trusted/encrypted transport 
> >(ACP).
> >b) The IPv6 address of the registrar and the client are derived from their 
> >certificates.
> >    Aka: This is similar to the "registrar.domain" trust, only that its 
> >    mutual
> >    and not dependent on random CAs, but both registrar and client cert 
> >    are from the
> >    same CA.
> >
> >Cheers
> >     Toerless
> >
> >>
> >>Yours,
> >>Joel
> >>
> >>On 11/25/15 2:30 PM, Brian E Carpenter wrote:
> >>>OK, I've cc'ed Joel as well since it was his review that triggered my
> >>>question.
> >>>
> >>>Agreed, if we want GRASP discovery to be capable of serving as a
> >>>general-purpose
> >>>discovery tool, we don't really need to justify the FQDN or URI/URL
> >>>options.
> >>>Joel's point was essentially the same as what you say below ("where the
> >>>locator
> >>>is in the ACP, we would require IPv6 address so that we do not introduce
> >>>the need
> >>>for ACP-wide DNS host-name lookup and registration"). So the FQDN and
> >>>URI/URL
> >>>options are not for "normal" GRASP operation.
> >>>
> >>>      Brian
> >>>
> >>>On 26/11/2015 08:14, Toerless Eckert wrote:
> >>>>[cc'ing signaling team ? (hopefully this is ok. to keep everybody in 
> >>>>sync]
> >>>>
> >>>>Forget about bootstrap, but in general:
> >>>>
> >>>>IMHO, URL/URI is the most important locator. When someone looks for a
> >>>>service/objective,
> >>>>it ultimately needs to get everything to build a protocol connection to
> >>>>achieve this
> >>>>objective/connect-to-this-service. Which means so much more than just 
> >>>>IP*
> >>>>adress, but also
> >>>>transport protocol, port, higher layer protocols, etc. pp.
> >>>>
> >>>>Why the heck would we want to have to reinvent messaging elements to
> >>>>reinvent
> >>>>signaling all those connection attributes if there is already one
> >>>>solution for this:
> >>>>URI.
> >>>>
> >>>>Example, bootstrap: The bootstrap proxy agent needs to discover the
> >>>>"an-registrar-enrollment"
> >>>>service (i just made up that name, somebody had to do it ;-). In return 
> >>>>i
> >>>>think you
> >>>>would get back (according to RFC7030, 3.2.2):
> >>>>
> >>>>https://<ipv6addr-of-registrar>{:<port>}/.well-known/est
> >>>>
> >>>>Of course we could support multiple enrollment protocols, but every 
> >>>>proxy
> >>>>that does
> >>>>support rfc7030 would recognize this as a URI indicating RFC7030. This 
> >>>>is
> >>>>because of
> >>>>/.well-known/est. And it then knows the necessary transport protocol
> >>>>pieces: IPv6
> >>>>addr and port and use of HTTPS. As a rule of thumb for services where 
> >>>>the
> >>>>locator is
> >>>>in the ACP, we would require IPv6 address so that we do not introduce 
> >>>>the
> >>>>need for
> >>>>ACP-wide DNS host-name lookup and registration.
> >>>>
> >>>>If there is a way to reuse more/better our existing IETF toolset, please
> >>>>chime in.
> >>>>
> >>>>Cheers
> >>>>     Toerless
> >>>>
> >>>>On Thu, Nov 26, 2015 at 07:53:42AM +1300, Brian E Carpenter wrote:
> >>>>>Here's a hopefully simple question from the GRASP side of the house.
> >>>>>
> >>>>>If the bootstrap uses GRASP discovery, what sort of locator will
> >>>>>it be trying to discover?
> >>>>>
> >>>>>At the moment GRASP has four locator types in the design:
> >>>>>
> >>>>>- IPv6 address
> >>>>>- IPv4 address
> >>>>>- FQDN
> >>>>>- URL
> >>>>>
> >>>>>It's been suggested by a reviewer that the URL option is unnecessary.
> >>>>>
> >>>>>Regards
> >>>>>    Brian
> >>>>>
> >>>>>_______________________________________________
> >>>>>Anima-bootstrap mailing list
> >>>>>Anima-bootstrap@ietf.org
> >>>>>https://www.ietf.org/mailman/listinfo/anima-bootstrap
> >>>>
> >>>
> >

-- 
---
Toerless Eckert, eckert@cisco.com


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Date: Wed, 25 Nov 2015 13:52:57 -0800
From: Toerless Eckert <eckert@cisco.com>
To: Brian E Carpenter <brian.e.carpenter@gmail.com>
Message-ID: <20151125215257.GT29056@cisco.com>
References: <565603B6.3030508@gmail.com> <20151125191407.GP29056@cisco.com> <56560C3F.9030304@gmail.com> <565613CC.1040903@joelhalpern.com> <20151125201711.GR29056@cisco.com> <5656181E.4000908@joelhalpern.com> <5656242F.7080703@gmail.com>
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Cc: anima-bootstrap <anima-bootstrap@ietf.org>, "Joel M. Halpern" <jmh@joelhalpern.com>, anima-signaling@ietf.org
Subject: Re: [Anima-bootstrap] Bootstrap discovery question
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On Thu, Nov 26, 2015 at 10:12:15AM +1300, Brian E Carpenter wrote:
> But I definitely disagree with Toerless that it would be reasonable to
> use a URI format for the purpose of carrying an (ACP) IP address. It's
> a very inefficient way to carry a 128 bit quantity that in the GRASP
> context is only needed for socket calls, so it never needs to be parsed
> or presented to a human.

DNS-SD has string based <param-name>=<param-value> attributes. These
are carried together in a single mDNS packet if mDNS is used. AFAIK,
nobody ever argued that those have to generically be encoded more compact,
but of course everybody is aware of the UDP/mDNS packet size limitation
and makes ssure the total information does not exceed eg: 1280.

Aka: My rule of thumb would be to always have a tight eye on fitting
GRASP service announcements within 1280 everything included. As long as
we feel safe on that, do as little additional optimization of pre-defined
data as necessary. 

If necessary, just have a CBOR binary <A>ddress attribute and then define
a URL template to use in GRASP:

  scheme://%A/....  -> %A : Name resolves to address in <A> element

Btw: I think we do need to have the DNS-SD parameters as well so that
we wouldn't have to reinvent the wheel for services that are well defined
via DNS-SD definitions ;-))

Cheers
    Toerless

> 
>     Brian
> 
> > 
> > yours,
> > Joel
> > 
> > On 11/25/15 3:17 PM, Toerless Eckert wrote:
> >> On Wed, Nov 25, 2015 at 03:02:20PM -0500, Joel M. Halpern wrote:
> >>> Yes, the key for me is what these "locators" are for.  If they are for
> >>> Anima Applications, that makes sense.  I can believe that there
> >>> applications for which a URL is a good location.  If they are for the
> >>> bootstrap process itself, that seems problematic.
> >>
> >> What is bad about rfc7030 ? https://<registrars-ipv6>//.wellknown/est
> >>
> >> How else would you want to indicate that you can support bootstrap via RFC7030 ?
> >> Thats how it's defined. Only important details is not to use an FQDN for the
> >> IP address of the URL.
> >>
> >>> I will also note in passing that trying to use a URL as a way of
> >>> bundling several related but separate pieces of information seems
> >>> problematic.
> >>
> >> Whot ??? Why the heck do we have URLs ? The pieces in a URL are not several,
> >> unrelated pieces of information. The idea is to have URLs describing the minimum
> >> necessary pieces of information to actually locate a service.
> >>
> >>> Even burying the IP address and port number in the URL
> >>> domain portion does not seem to be a good idea unless that same URL is
> >>> what is to be used to send the resulting messages (for example if the
> >>> service were on top of SOAP).
> >>
> >> The EST connection would be established to the IPv6 address in the URL, right.
> >>
> >> There is no need for hostname DNS in ACP. Hostnames are just an optimization
> >> for services provided by only one host. I haven't seen a requirement to make
> >> ACP ervice discovery depend on having this redundant layer.
> >>
> >> Btw: The rfc7030 trust model for https:// between client and registrar in the ACP is
> >> NOT based on the client believing registrar.domain is valid because of some bogus
> >> CA signed cert for "registrar.domain", but because of
> >>
> >> a) The connection runs across an end-to-end trusted/encrypted transport (ACP).
> >> b) The IPv6 address of the registrar and the client are derived from their certificates.
> >>     Aka: This is similar to the "registrar.domain" trust, only that its mutual
> >>     and not dependent on random CAs, but both registrar and client cert are from the
> >>     same CA.
> >>
> >> Cheers
> >>      Toerless
> >>
> >>>
> >>> Yours,
> >>> Joel
> >>>
> >>> On 11/25/15 2:30 PM, Brian E Carpenter wrote:
> >>>> OK, I've cc'ed Joel as well since it was his review that triggered my
> >>>> question.
> >>>>
> >>>> Agreed, if we want GRASP discovery to be capable of serving as a
> >>>> general-purpose
> >>>> discovery tool, we don't really need to justify the FQDN or URI/URL
> >>>> options.
> >>>> Joel's point was essentially the same as what you say below ("where the
> >>>> locator
> >>>> is in the ACP, we would require IPv6 address so that we do not introduce
> >>>> the need
> >>>> for ACP-wide DNS host-name lookup and registration"). So the FQDN and
> >>>> URI/URL
> >>>> options are not for "normal" GRASP operation.
> >>>>
> >>>>       Brian
> >>>>
> >>>> On 26/11/2015 08:14, Toerless Eckert wrote:
> >>>>> [cc'ing signaling team ? (hopefully this is ok. to keep everybody in sync]
> >>>>>
> >>>>> Forget about bootstrap, but in general:
> >>>>>
> >>>>> IMHO, URL/URI is the most important locator. When someone looks for a
> >>>>> service/objective,
> >>>>> it ultimately needs to get everything to build a protocol connection to
> >>>>> achieve this
> >>>>> objective/connect-to-this-service. Which means so much more than just IP*
> >>>>> adress, but also
> >>>>> transport protocol, port, higher layer protocols, etc. pp.
> >>>>>
> >>>>> Why the heck would we want to have to reinvent messaging elements to
> >>>>> reinvent
> >>>>> signaling all those connection attributes if there is already one
> >>>>> solution for this:
> >>>>> URI.
> >>>>>
> >>>>> Example, bootstrap: The bootstrap proxy agent needs to discover the
> >>>>> "an-registrar-enrollment"
> >>>>> service (i just made up that name, somebody had to do it ;-). In return i
> >>>>> think you
> >>>>> would get back (according to RFC7030, 3.2.2):
> >>>>>
> >>>>> https://<ipv6addr-of-registrar>{:<port>}/.well-known/est
> >>>>>
> >>>>> Of course we could support multiple enrollment protocols, but every proxy
> >>>>> that does
> >>>>> support rfc7030 would recognize this as a URI indicating RFC7030. This is
> >>>>> because of
> >>>>> /.well-known/est. And it then knows the necessary transport protocol
> >>>>> pieces: IPv6
> >>>>> addr and port and use of HTTPS. As a rule of thumb for services where the
> >>>>> locator is
> >>>>> in the ACP, we would require IPv6 address so that we do not introduce the
> >>>>> need for
> >>>>> ACP-wide DNS host-name lookup and registration.
> >>>>>
> >>>>> If there is a way to reuse more/better our existing IETF toolset, please
> >>>>> chime in.
> >>>>>
> >>>>> Cheers
> >>>>>      Toerless
> >>>>>
> >>>>> On Thu, Nov 26, 2015 at 07:53:42AM +1300, Brian E Carpenter wrote:
> >>>>>> Here's a hopefully simple question from the GRASP side of the house.
> >>>>>>
> >>>>>> If the bootstrap uses GRASP discovery, what sort of locator will
> >>>>>> it be trying to discover?
> >>>>>>
> >>>>>> At the moment GRASP has four locator types in the design:
> >>>>>>
> >>>>>> - IPv6 address
> >>>>>> - IPv4 address
> >>>>>> - FQDN
> >>>>>> - URL
> >>>>>>
> >>>>>> It's been suggested by a reviewer that the URL option is unnecessary.
> >>>>>>
> >>>>>> Regards
> >>>>>>     Brian
> >>>>>>
> >>>>>> _______________________________________________
> >>>>>> Anima-bootstrap mailing list
> >>>>>> Anima-bootstrap@ietf.org
> >>>>>> https://www.ietf.org/mailman/listinfo/anima-bootstrap
> >>>>>
> >>>>
> >>
> > 

-- 
---
Toerless Eckert, eckert@cisco.com


From nobody Wed Nov 25 15:00:51 2015
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To: Toerless Eckert <eckert@cisco.com>, Brian E Carpenter <brian.e.carpenter@gmail.com>
References: <565603B6.3030508@gmail.com> <20151125191407.GP29056@cisco.com> <56560C3F.9030304@gmail.com> <565613CC.1040903@joelhalpern.com> <20151125201711.GR29056@cisco.com> <5656181E.4000908@joelhalpern.com> <5656242F.7080703@gmail.com> <20151125215257.GT29056@cisco.com>
From: "Joel M. Halpern" <jmh@joelhalpern.com>
Message-ID: <56563D92.6000109@joelhalpern.com>
Date: Wed, 25 Nov 2015 18:00:34 -0500
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Cc: anima-bootstrap <anima-bootstrap@ietf.org>, anima-signaling@ietf.org
Subject: Re: [Anima-bootstrap] Bootstrap discovery question
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I think the problem is much simpler Toerless.
You want to be able to use a specific format of URL in certain 
circumstances.  That particular usage seems defensible.

But if we want to do that, we need to make very clear that only that 
usage is allowed.  Shipping arbitrary URLs around and expecting them to 
do the right thing seems at best over-optimistic.

I agree that we should not invent new ways of packaging information.
I am not at all sure I agree that a URL is the IETF agreed way for 
packaging information at any layer other than the application layer.

Yours,
Joel

On 11/25/15 4:52 PM, Toerless Eckert wrote:
> On Thu, Nov 26, 2015 at 10:12:15AM +1300, Brian E Carpenter wrote:
>> But I definitely disagree with Toerless that it would be reasonable to
>> use a URI format for the purpose of carrying an (ACP) IP address. It's
>> a very inefficient way to carry a 128 bit quantity that in the GRASP
>> context is only needed for socket calls, so it never needs to be parsed
>> or presented to a human.
>
> DNS-SD has string based <param-name>=<param-value> attributes. These
> are carried together in a single mDNS packet if mDNS is used. AFAIK,
> nobody ever argued that those have to generically be encoded more compact,
> but of course everybody is aware of the UDP/mDNS packet size limitation
> and makes ssure the total information does not exceed eg: 1280.
>
> Aka: My rule of thumb would be to always have a tight eye on fitting
> GRASP service announcements within 1280 everything included. As long as
> we feel safe on that, do as little additional optimization of pre-defined
> data as necessary.
>
> If necessary, just have a CBOR binary <A>ddress attribute and then define
> a URL template to use in GRASP:
>
>    scheme://%A/....  -> %A : Name resolves to address in <A> element
>
> Btw: I think we do need to have the DNS-SD parameters as well so that
> we wouldn't have to reinvent the wheel for services that are well defined
> via DNS-SD definitions ;-))
>
> Cheers
>      Toerless
>
>>
>>      Brian
>>
>>>
>>> yours,
>>> Joel
>>>
>>> On 11/25/15 3:17 PM, Toerless Eckert wrote:
>>>> On Wed, Nov 25, 2015 at 03:02:20PM -0500, Joel M. Halpern wrote:
>>>>> Yes, the key for me is what these "locators" are for.  If they are for
>>>>> Anima Applications, that makes sense.  I can believe that there
>>>>> applications for which a URL is a good location.  If they are for the
>>>>> bootstrap process itself, that seems problematic.
>>>>
>>>> What is bad about rfc7030 ? https://<registrars-ipv6>//.wellknown/est
>>>>
>>>> How else would you want to indicate that you can support bootstrap via RFC7030 ?
>>>> Thats how it's defined. Only important details is not to use an FQDN for the
>>>> IP address of the URL.
>>>>
>>>>> I will also note in passing that trying to use a URL as a way of
>>>>> bundling several related but separate pieces of information seems
>>>>> problematic.
>>>>
>>>> Whot ??? Why the heck do we have URLs ? The pieces in a URL are not several,
>>>> unrelated pieces of information. The idea is to have URLs describing the minimum
>>>> necessary pieces of information to actually locate a service.
>>>>
>>>>> Even burying the IP address and port number in the URL
>>>>> domain portion does not seem to be a good idea unless that same URL is
>>>>> what is to be used to send the resulting messages (for example if the
>>>>> service were on top of SOAP).
>>>>
>>>> The EST connection would be established to the IPv6 address in the URL, right.
>>>>
>>>> There is no need for hostname DNS in ACP. Hostnames are just an optimization
>>>> for services provided by only one host. I haven't seen a requirement to make
>>>> ACP ervice discovery depend on having this redundant layer.
>>>>
>>>> Btw: The rfc7030 trust model for https:// between client and registrar in the ACP is
>>>> NOT based on the client believing registrar.domain is valid because of some bogus
>>>> CA signed cert for "registrar.domain", but because of
>>>>
>>>> a) The connection runs across an end-to-end trusted/encrypted transport (ACP).
>>>> b) The IPv6 address of the registrar and the client are derived from their certificates.
>>>>      Aka: This is similar to the "registrar.domain" trust, only that its mutual
>>>>      and not dependent on random CAs, but both registrar and client cert are from the
>>>>      same CA.
>>>>
>>>> Cheers
>>>>       Toerless
>>>>
>>>>>
>>>>> Yours,
>>>>> Joel
>>>>>
>>>>> On 11/25/15 2:30 PM, Brian E Carpenter wrote:
>>>>>> OK, I've cc'ed Joel as well since it was his review that triggered my
>>>>>> question.
>>>>>>
>>>>>> Agreed, if we want GRASP discovery to be capable of serving as a
>>>>>> general-purpose
>>>>>> discovery tool, we don't really need to justify the FQDN or URI/URL
>>>>>> options.
>>>>>> Joel's point was essentially the same as what you say below ("where the
>>>>>> locator
>>>>>> is in the ACP, we would require IPv6 address so that we do not introduce
>>>>>> the need
>>>>>> for ACP-wide DNS host-name lookup and registration"). So the FQDN and
>>>>>> URI/URL
>>>>>> options are not for "normal" GRASP operation.
>>>>>>
>>>>>>        Brian
>>>>>>
>>>>>> On 26/11/2015 08:14, Toerless Eckert wrote:
>>>>>>> [cc'ing signaling team ? (hopefully this is ok. to keep everybody in sync]
>>>>>>>
>>>>>>> Forget about bootstrap, but in general:
>>>>>>>
>>>>>>> IMHO, URL/URI is the most important locator. When someone looks for a
>>>>>>> service/objective,
>>>>>>> it ultimately needs to get everything to build a protocol connection to
>>>>>>> achieve this
>>>>>>> objective/connect-to-this-service. Which means so much more than just IP*
>>>>>>> adress, but also
>>>>>>> transport protocol, port, higher layer protocols, etc. pp.
>>>>>>>
>>>>>>> Why the heck would we want to have to reinvent messaging elements to
>>>>>>> reinvent
>>>>>>> signaling all those connection attributes if there is already one
>>>>>>> solution for this:
>>>>>>> URI.
>>>>>>>
>>>>>>> Example, bootstrap: The bootstrap proxy agent needs to discover the
>>>>>>> "an-registrar-enrollment"
>>>>>>> service (i just made up that name, somebody had to do it ;-). In return i
>>>>>>> think you
>>>>>>> would get back (according to RFC7030, 3.2.2):
>>>>>>>
>>>>>>> https://<ipv6addr-of-registrar>{:<port>}/.well-known/est
>>>>>>>
>>>>>>> Of course we could support multiple enrollment protocols, but every proxy
>>>>>>> that does
>>>>>>> support rfc7030 would recognize this as a URI indicating RFC7030. This is
>>>>>>> because of
>>>>>>> /.well-known/est. And it then knows the necessary transport protocol
>>>>>>> pieces: IPv6
>>>>>>> addr and port and use of HTTPS. As a rule of thumb for services where the
>>>>>>> locator is
>>>>>>> in the ACP, we would require IPv6 address so that we do not introduce the
>>>>>>> need for
>>>>>>> ACP-wide DNS host-name lookup and registration.
>>>>>>>
>>>>>>> If there is a way to reuse more/better our existing IETF toolset, please
>>>>>>> chime in.
>>>>>>>
>>>>>>> Cheers
>>>>>>>       Toerless
>>>>>>>
>>>>>>> On Thu, Nov 26, 2015 at 07:53:42AM +1300, Brian E Carpenter wrote:
>>>>>>>> Here's a hopefully simple question from the GRASP side of the house.
>>>>>>>>
>>>>>>>> If the bootstrap uses GRASP discovery, what sort of locator will
>>>>>>>> it be trying to discover?
>>>>>>>>
>>>>>>>> At the moment GRASP has four locator types in the design:
>>>>>>>>
>>>>>>>> - IPv6 address
>>>>>>>> - IPv4 address
>>>>>>>> - FQDN
>>>>>>>> - URL
>>>>>>>>
>>>>>>>> It's been suggested by a reviewer that the URL option is unnecessary.
>>>>>>>>
>>>>>>>> Regards
>>>>>>>>      Brian
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> Anima-bootstrap mailing list
>>>>>>>> Anima-bootstrap@ietf.org
>>>>>>>> https://www.ietf.org/mailman/listinfo/anima-bootstrap
>>>>>>>
>>>>>>
>>>>
>>>
>


From nobody Wed Nov 25 15:40:40 2015
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Date: Wed, 25 Nov 2015 15:40:35 -0800
From: Toerless Eckert <eckert@cisco.com>
To: "Joel M. Halpern" <jmh@joelhalpern.com>
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Subject: Re: [Anima-bootstrap] Bootstrap discovery question
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So, with that said: What's your suggestion to best define in an extensible
fashion the locators for services/objectives with minimum new definitions and
maximum reuse of known/working IETF solutions. To me the known/working IETF
solutions are URLs and DNS-SD. 

I do agree that so far a lot of stuff below the app-layer in the IETF has
created as many new registries for assigned name & numbers as threy could
(ok, maybe a bit cynical). I really wish we could come up with a framework 
for anima that doesn't require contiguously new registries when new agents are
written.

Cheers
    Toerless

On Wed, Nov 25, 2015 at 06:00:34PM -0500, Joel M. Halpern wrote:
> I think the problem is much simpler Toerless.
> You want to be able to use a specific format of URL in certain 
> circumstances.  That particular usage seems defensible.
> 
> But if we want to do that, we need to make very clear that only that 
> usage is allowed.  Shipping arbitrary URLs around and expecting them to 
> do the right thing seems at best over-optimistic.
> 
> I agree that we should not invent new ways of packaging information.
> I am not at all sure I agree that a URL is the IETF agreed way for 
> packaging information at any layer other than the application layer.
> 
> Yours,
> Joel
> 
> On 11/25/15 4:52 PM, Toerless Eckert wrote:
> >On Thu, Nov 26, 2015 at 10:12:15AM +1300, Brian E Carpenter wrote:
> >>But I definitely disagree with Toerless that it would be reasonable to
> >>use a URI format for the purpose of carrying an (ACP) IP address. It's
> >>a very inefficient way to carry a 128 bit quantity that in the GRASP
> >>context is only needed for socket calls, so it never needs to be parsed
> >>or presented to a human.
> >
> >DNS-SD has string based <param-name>=<param-value> attributes. These
> >are carried together in a single mDNS packet if mDNS is used. AFAIK,
> >nobody ever argued that those have to generically be encoded more compact,
> >but of course everybody is aware of the UDP/mDNS packet size limitation
> >and makes ssure the total information does not exceed eg: 1280.
> >
> >Aka: My rule of thumb would be to always have a tight eye on fitting
> >GRASP service announcements within 1280 everything included. As long as
> >we feel safe on that, do as little additional optimization of pre-defined
> >data as necessary.
> >
> >If necessary, just have a CBOR binary <A>ddress attribute and then define
> >a URL template to use in GRASP:
> >
> >   scheme://%A/....  -> %A : Name resolves to address in <A> element
> >
> >Btw: I think we do need to have the DNS-SD parameters as well so that
> >we wouldn't have to reinvent the wheel for services that are well defined
> >via DNS-SD definitions ;-))
> >
> >Cheers
> >     Toerless
> >
> >>
> >>     Brian
> >>
> >>>
> >>>yours,
> >>>Joel
> >>>
> >>>On 11/25/15 3:17 PM, Toerless Eckert wrote:
> >>>>On Wed, Nov 25, 2015 at 03:02:20PM -0500, Joel M. Halpern wrote:
> >>>>>Yes, the key for me is what these "locators" are for.  If they are for
> >>>>>Anima Applications, that makes sense.  I can believe that there
> >>>>>applications for which a URL is a good location.  If they are for the
> >>>>>bootstrap process itself, that seems problematic.
> >>>>
> >>>>What is bad about rfc7030 ? https://<registrars-ipv6>//.wellknown/est
> >>>>
> >>>>How else would you want to indicate that you can support bootstrap via 
> >>>>RFC7030 ?
> >>>>Thats how it's defined. Only important details is not to use an FQDN 
> >>>>for the
> >>>>IP address of the URL.
> >>>>
> >>>>>I will also note in passing that trying to use a URL as a way of
> >>>>>bundling several related but separate pieces of information seems
> >>>>>problematic.
> >>>>
> >>>>Whot ??? Why the heck do we have URLs ? The pieces in a URL are not 
> >>>>several,
> >>>>unrelated pieces of information. The idea is to have URLs describing 
> >>>>the minimum
> >>>>necessary pieces of information to actually locate a service.
> >>>>
> >>>>>Even burying the IP address and port number in the URL
> >>>>>domain portion does not seem to be a good idea unless that same URL is
> >>>>>what is to be used to send the resulting messages (for example if the
> >>>>>service were on top of SOAP).
> >>>>
> >>>>The EST connection would be established to the IPv6 address in the URL, 
> >>>>right.
> >>>>
> >>>>There is no need for hostname DNS in ACP. Hostnames are just an 
> >>>>optimization
> >>>>for services provided by only one host. I haven't seen a requirement to 
> >>>>make
> >>>>ACP ervice discovery depend on having this redundant layer.
> >>>>
> >>>>Btw: The rfc7030 trust model for https:// between client and registrar 
> >>>>in the ACP is
> >>>>NOT based on the client believing registrar.domain is valid because of 
> >>>>some bogus
> >>>>CA signed cert for "registrar.domain", but because of
> >>>>
> >>>>a) The connection runs across an end-to-end trusted/encrypted transport 
> >>>>(ACP).
> >>>>b) The IPv6 address of the registrar and the client are derived from 
> >>>>their certificates.
> >>>>     Aka: This is similar to the "registrar.domain" trust, only that 
> >>>>     its mutual
> >>>>     and not dependent on random CAs, but both registrar and client 
> >>>>     cert are from the
> >>>>     same CA.
> >>>>
> >>>>Cheers
> >>>>      Toerless
> >>>>
> >>>>>
> >>>>>Yours,
> >>>>>Joel
> >>>>>
> >>>>>On 11/25/15 2:30 PM, Brian E Carpenter wrote:
> >>>>>>OK, I've cc'ed Joel as well since it was his review that triggered my
> >>>>>>question.
> >>>>>>
> >>>>>>Agreed, if we want GRASP discovery to be capable of serving as a
> >>>>>>general-purpose
> >>>>>>discovery tool, we don't really need to justify the FQDN or URI/URL
> >>>>>>options.
> >>>>>>Joel's point was essentially the same as what you say below ("where 
> >>>>>>the
> >>>>>>locator
> >>>>>>is in the ACP, we would require IPv6 address so that we do not 
> >>>>>>introduce
> >>>>>>the need
> >>>>>>for ACP-wide DNS host-name lookup and registration"). So the FQDN and
> >>>>>>URI/URL
> >>>>>>options are not for "normal" GRASP operation.
> >>>>>>
> >>>>>>       Brian
> >>>>>>
> >>>>>>On 26/11/2015 08:14, Toerless Eckert wrote:
> >>>>>>>[cc'ing signaling team ? (hopefully this is ok. to keep everybody in 
> >>>>>>>sync]
> >>>>>>>
> >>>>>>>Forget about bootstrap, but in general:
> >>>>>>>
> >>>>>>>IMHO, URL/URI is the most important locator. When someone looks for a
> >>>>>>>service/objective,
> >>>>>>>it ultimately needs to get everything to build a protocol connection 
> >>>>>>>to
> >>>>>>>achieve this
> >>>>>>>objective/connect-to-this-service. Which means so much more than 
> >>>>>>>just IP*
> >>>>>>>adress, but also
> >>>>>>>transport protocol, port, higher layer protocols, etc. pp.
> >>>>>>>
> >>>>>>>Why the heck would we want to have to reinvent messaging elements to
> >>>>>>>reinvent
> >>>>>>>signaling all those connection attributes if there is already one
> >>>>>>>solution for this:
> >>>>>>>URI.
> >>>>>>>
> >>>>>>>Example, bootstrap: The bootstrap proxy agent needs to discover the
> >>>>>>>"an-registrar-enrollment"
> >>>>>>>service (i just made up that name, somebody had to do it ;-). In 
> >>>>>>>return i
> >>>>>>>think you
> >>>>>>>would get back (according to RFC7030, 3.2.2):
> >>>>>>>
> >>>>>>>https://<ipv6addr-of-registrar>{:<port>}/.well-known/est
> >>>>>>>
> >>>>>>>Of course we could support multiple enrollment protocols, but every 
> >>>>>>>proxy
> >>>>>>>that does
> >>>>>>>support rfc7030 would recognize this as a URI indicating RFC7030. 
> >>>>>>>This is
> >>>>>>>because of
> >>>>>>>/.well-known/est. And it then knows the necessary transport protocol
> >>>>>>>pieces: IPv6
> >>>>>>>addr and port and use of HTTPS. As a rule of thumb for services 
> >>>>>>>where the
> >>>>>>>locator is
> >>>>>>>in the ACP, we would require IPv6 address so that we do not 
> >>>>>>>introduce the
> >>>>>>>need for
> >>>>>>>ACP-wide DNS host-name lookup and registration.
> >>>>>>>
> >>>>>>>If there is a way to reuse more/better our existing IETF toolset, 
> >>>>>>>please
> >>>>>>>chime in.
> >>>>>>>
> >>>>>>>Cheers
> >>>>>>>      Toerless
> >>>>>>>
> >>>>>>>On Thu, Nov 26, 2015 at 07:53:42AM +1300, Brian E Carpenter wrote:
> >>>>>>>>Here's a hopefully simple question from the GRASP side of the house.
> >>>>>>>>
> >>>>>>>>If the bootstrap uses GRASP discovery, what sort of locator will
> >>>>>>>>it be trying to discover?
> >>>>>>>>
> >>>>>>>>At the moment GRASP has four locator types in the design:
> >>>>>>>>
> >>>>>>>>- IPv6 address
> >>>>>>>>- IPv4 address
> >>>>>>>>- FQDN
> >>>>>>>>- URL
> >>>>>>>>
> >>>>>>>>It's been suggested by a reviewer that the URL option is 
> >>>>>>>>unnecessary.
> >>>>>>>>
> >>>>>>>>Regards
> >>>>>>>>     Brian
> >>>>>>>>
> >>>>>>>>_______________________________________________
> >>>>>>>>Anima-bootstrap mailing list
> >>>>>>>>Anima-bootstrap@ietf.org
> >>>>>>>>https://www.ietf.org/mailman/listinfo/anima-bootstrap
> >>>>>>>
> >>>>>>
> >>>>
> >>>
> >

-- 
---
Toerless Eckert, eckert@cisco.com


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To: Toerless Eckert <eckert@cisco.com>, "Joel M. Halpern" <jmh@joelhalpern.com>
References: <565603B6.3030508@gmail.com> <20151125191407.GP29056@cisco.com> <56560C3F.9030304@gmail.com> <565613CC.1040903@joelhalpern.com> <20151125201711.GR29056@cisco.com> <5656181E.4000908@joelhalpern.com> <5656242F.7080703@gmail.com> <20151125215257.GT29056@cisco.com> <56563D92.6000109@joelhalpern.com> <20151125234035.GU29056@cisco.com>
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
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Date: Thu, 26 Nov 2015 13:32:11 +1300
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Subject: Re: [Anima-bootstrap] Bootstrap discovery question
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On 26/11/2015 12:40, Toerless Eckert wrote:
> 
> So, with that said: What's your suggestion to best define in an extensible
> fashion the locators for services/objectives with minimum new definitions and
> maximum reuse of known/working IETF solutions. To me the known/working IETF
> solutions are URLs and DNS-SD.

I begin to suspect that you are using "locator" to mean more than I do.
To me, a locator contains no semantics whatever. "<param-name>=<param-value>
attributes" is not part of a locator.

The value field of a GRASP objective is defined as "a single value or a data
structure of any kind." So there's no problem if you want to embed whatever
you want, such as <param-name>=<param-value> attributes. However, GRASP
discovery is only aimed at discovering the locator of an ASA that supports a
given objective, with the option of following up by synchronizing or negotiating
the value. (And with Bing's favourite optimization, rapid mode discovery,
you can discover a peer and fetch the value in one operation.)

Again, there is nothing in GRASP that prevents using DNS-SD or URI formats,
or HTML, XML, YANG or anything else you want, once you have found the
locator of your peer. Equally, you can use pure binary if you like.

(I agree that message sizes SHOULD be small, but they MAY be large.)

   Brian


> 
> I do agree that so far a lot of stuff below the app-layer in the IETF has
> created as many new registries for assigned name & numbers as threy could
> (ok, maybe a bit cynical). I really wish we could come up with a framework 
> for anima that doesn't require contiguously new registries when new agents are
> written.
> 
> Cheers
>     Toerless
> 
> On Wed, Nov 25, 2015 at 06:00:34PM -0500, Joel M. Halpern wrote:
>> I think the problem is much simpler Toerless.
>> You want to be able to use a specific format of URL in certain 
>> circumstances.  That particular usage seems defensible.
>>
>> But if we want to do that, we need to make very clear that only that 
>> usage is allowed.  Shipping arbitrary URLs around and expecting them to 
>> do the right thing seems at best over-optimistic.
>>
>> I agree that we should not invent new ways of packaging information.
>> I am not at all sure I agree that a URL is the IETF agreed way for 
>> packaging information at any layer other than the application layer.
>>
>> Yours,
>> Joel
>>
>> On 11/25/15 4:52 PM, Toerless Eckert wrote:
>>> On Thu, Nov 26, 2015 at 10:12:15AM +1300, Brian E Carpenter wrote:
>>>> But I definitely disagree with Toerless that it would be reasonable to
>>>> use a URI format for the purpose of carrying an (ACP) IP address. It's
>>>> a very inefficient way to carry a 128 bit quantity that in the GRASP
>>>> context is only needed for socket calls, so it never needs to be parsed
>>>> or presented to a human.
>>>
>>> DNS-SD has string based <param-name>=<param-value> attributes. These
>>> are carried together in a single mDNS packet if mDNS is used. AFAIK,
>>> nobody ever argued that those have to generically be encoded more compact,
>>> but of course everybody is aware of the UDP/mDNS packet size limitation
>>> and makes ssure the total information does not exceed eg: 1280.
>>>
>>> Aka: My rule of thumb would be to always have a tight eye on fitting
>>> GRASP service announcements within 1280 everything included. As long as
>>> we feel safe on that, do as little additional optimization of pre-defined
>>> data as necessary.
>>>
>>> If necessary, just have a CBOR binary <A>ddress attribute and then define
>>> a URL template to use in GRASP:
>>>
>>>   scheme://%A/....  -> %A : Name resolves to address in <A> element
>>>
>>> Btw: I think we do need to have the DNS-SD parameters as well so that
>>> we wouldn't have to reinvent the wheel for services that are well defined
>>> via DNS-SD definitions ;-))
>>>
>>> Cheers
>>>     Toerless
>>>
>>>>
>>>>     Brian
>>>>
>>>>>
>>>>> yours,
>>>>> Joel
>>>>>
>>>>> On 11/25/15 3:17 PM, Toerless Eckert wrote:
>>>>>> On Wed, Nov 25, 2015 at 03:02:20PM -0500, Joel M. Halpern wrote:
>>>>>>> Yes, the key for me is what these "locators" are for.  If they are for
>>>>>>> Anima Applications, that makes sense.  I can believe that there
>>>>>>> applications for which a URL is a good location.  If they are for the
>>>>>>> bootstrap process itself, that seems problematic.
>>>>>>
>>>>>> What is bad about rfc7030 ? https://<registrars-ipv6>//.wellknown/est
>>>>>>
>>>>>> How else would you want to indicate that you can support bootstrap via 
>>>>>> RFC7030 ?
>>>>>> Thats how it's defined. Only important details is not to use an FQDN 
>>>>>> for the
>>>>>> IP address of the URL.
>>>>>>
>>>>>>> I will also note in passing that trying to use a URL as a way of
>>>>>>> bundling several related but separate pieces of information seems
>>>>>>> problematic.
>>>>>>
>>>>>> Whot ??? Why the heck do we have URLs ? The pieces in a URL are not 
>>>>>> several,
>>>>>> unrelated pieces of information. The idea is to have URLs describing 
>>>>>> the minimum
>>>>>> necessary pieces of information to actually locate a service.
>>>>>>
>>>>>>> Even burying the IP address and port number in the URL
>>>>>>> domain portion does not seem to be a good idea unless that same URL is
>>>>>>> what is to be used to send the resulting messages (for example if the
>>>>>>> service were on top of SOAP).
>>>>>>
>>>>>> The EST connection would be established to the IPv6 address in the URL, 
>>>>>> right.
>>>>>>
>>>>>> There is no need for hostname DNS in ACP. Hostnames are just an 
>>>>>> optimization
>>>>>> for services provided by only one host. I haven't seen a requirement to 
>>>>>> make
>>>>>> ACP ervice discovery depend on having this redundant layer.
>>>>>>
>>>>>> Btw: The rfc7030 trust model for https:// between client and registrar 
>>>>>> in the ACP is
>>>>>> NOT based on the client believing registrar.domain is valid because of 
>>>>>> some bogus
>>>>>> CA signed cert for "registrar.domain", but because of
>>>>>>
>>>>>> a) The connection runs across an end-to-end trusted/encrypted transport 
>>>>>> (ACP).
>>>>>> b) The IPv6 address of the registrar and the client are derived from 
>>>>>> their certificates.
>>>>>>     Aka: This is similar to the "registrar.domain" trust, only that 
>>>>>>     its mutual
>>>>>>     and not dependent on random CAs, but both registrar and client 
>>>>>>     cert are from the
>>>>>>     same CA.
>>>>>>
>>>>>> Cheers
>>>>>>      Toerless
>>>>>>
>>>>>>>
>>>>>>> Yours,
>>>>>>> Joel
>>>>>>>
>>>>>>> On 11/25/15 2:30 PM, Brian E Carpenter wrote:
>>>>>>>> OK, I've cc'ed Joel as well since it was his review that triggered my
>>>>>>>> question.
>>>>>>>>
>>>>>>>> Agreed, if we want GRASP discovery to be capable of serving as a
>>>>>>>> general-purpose
>>>>>>>> discovery tool, we don't really need to justify the FQDN or URI/URL
>>>>>>>> options.
>>>>>>>> Joel's point was essentially the same as what you say below ("where 
>>>>>>>> the
>>>>>>>> locator
>>>>>>>> is in the ACP, we would require IPv6 address so that we do not 
>>>>>>>> introduce
>>>>>>>> the need
>>>>>>>> for ACP-wide DNS host-name lookup and registration"). So the FQDN and
>>>>>>>> URI/URL
>>>>>>>> options are not for "normal" GRASP operation.
>>>>>>>>
>>>>>>>>       Brian
>>>>>>>>
>>>>>>>> On 26/11/2015 08:14, Toerless Eckert wrote:
>>>>>>>>> [cc'ing signaling team ? (hopefully this is ok. to keep everybody in 
>>>>>>>>> sync]
>>>>>>>>>
>>>>>>>>> Forget about bootstrap, but in general:
>>>>>>>>>
>>>>>>>>> IMHO, URL/URI is the most important locator. When someone looks for a
>>>>>>>>> service/objective,
>>>>>>>>> it ultimately needs to get everything to build a protocol connection 
>>>>>>>>> to
>>>>>>>>> achieve this
>>>>>>>>> objective/connect-to-this-service. Which means so much more than 
>>>>>>>>> just IP*
>>>>>>>>> adress, but also
>>>>>>>>> transport protocol, port, higher layer protocols, etc. pp.
>>>>>>>>>
>>>>>>>>> Why the heck would we want to have to reinvent messaging elements to
>>>>>>>>> reinvent
>>>>>>>>> signaling all those connection attributes if there is already one
>>>>>>>>> solution for this:
>>>>>>>>> URI.
>>>>>>>>>
>>>>>>>>> Example, bootstrap: The bootstrap proxy agent needs to discover the
>>>>>>>>> "an-registrar-enrollment"
>>>>>>>>> service (i just made up that name, somebody had to do it ;-). In 
>>>>>>>>> return i
>>>>>>>>> think you
>>>>>>>>> would get back (according to RFC7030, 3.2.2):
>>>>>>>>>
>>>>>>>>> https://<ipv6addr-of-registrar>{:<port>}/.well-known/est
>>>>>>>>>
>>>>>>>>> Of course we could support multiple enrollment protocols, but every 
>>>>>>>>> proxy
>>>>>>>>> that does
>>>>>>>>> support rfc7030 would recognize this as a URI indicating RFC7030. 
>>>>>>>>> This is
>>>>>>>>> because of
>>>>>>>>> /.well-known/est. And it then knows the necessary transport protocol
>>>>>>>>> pieces: IPv6
>>>>>>>>> addr and port and use of HTTPS. As a rule of thumb for services 
>>>>>>>>> where the
>>>>>>>>> locator is
>>>>>>>>> in the ACP, we would require IPv6 address so that we do not 
>>>>>>>>> introduce the
>>>>>>>>> need for
>>>>>>>>> ACP-wide DNS host-name lookup and registration.
>>>>>>>>>
>>>>>>>>> If there is a way to reuse more/better our existing IETF toolset, 
>>>>>>>>> please
>>>>>>>>> chime in.
>>>>>>>>>
>>>>>>>>> Cheers
>>>>>>>>>      Toerless
>>>>>>>>>
>>>>>>>>> On Thu, Nov 26, 2015 at 07:53:42AM +1300, Brian E Carpenter wrote:
>>>>>>>>>> Here's a hopefully simple question from the GRASP side of the house.
>>>>>>>>>>
>>>>>>>>>> If the bootstrap uses GRASP discovery, what sort of locator will
>>>>>>>>>> it be trying to discover?
>>>>>>>>>>
>>>>>>>>>> At the moment GRASP has four locator types in the design:
>>>>>>>>>>
>>>>>>>>>> - IPv6 address
>>>>>>>>>> - IPv4 address
>>>>>>>>>> - FQDN
>>>>>>>>>> - URL
>>>>>>>>>>
>>>>>>>>>> It's been suggested by a reviewer that the URL option is 
>>>>>>>>>> unnecessary.
>>>>>>>>>>
>>>>>>>>>> Regards
>>>>>>>>>>     Brian
>>>>>>>>>>
>>>>>>>>>> _______________________________________________
>>>>>>>>>> Anima-bootstrap mailing list
>>>>>>>>>> Anima-bootstrap@ietf.org
>>>>>>>>>> https://www.ietf.org/mailman/listinfo/anima-bootstrap
>>>>>>>>>
>>>>>>>>
>>>>>>
>>>>>
>>>
> 


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To: Toerless Eckert <eckert@cisco.com>, "Joel M. Halpern" <jmh@joelhalpern.com>
References: <565603B6.3030508@gmail.com> <20151125191407.GP29056@cisco.com> <56560C3F.9030304@gmail.com> <565613CC.1040903@joelhalpern.com> <20151125201711.GR29056@cisco.com> <5656181E.4000908@joelhalpern.com> <5656242F.7080703@gmail.com> <20151125215257.GT29056@cisco.com> <56563D92.6000109@joelhalpern.com> <20151125234035.GU29056@cisco.com> <5656530B.508@gmail.com>
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
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Date: Thu, 26 Nov 2015 13:46:51 +1300
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Subject: Re: [Anima-bootstrap] Bootstrap discovery question
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Oops, missed this:

> I really wish we could come up with a framework 
> for anima that doesn't require contiguously new registries when new agents are
> written.

Well, we've made it as simple as we can while preserving uniqueness:

For generic objective names: Specification Required policy.
For "vendor"-defined objective names: tagged with PEN or domain name (TBD).

So, no new registry for proprietary or local ASAs. Hopefully we would
end up with a small library of generic ones.

Regards
   Brian


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Date: Wed, 25 Nov 2015 16:52:33 -0800
From: Toerless Eckert <eckert@cisco.com>
To: Brian E Carpenter <brian.e.carpenter@gmail.com>
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References: <20151125191407.GP29056@cisco.com> <56560C3F.9030304@gmail.com> <565613CC.1040903@joelhalpern.com> <20151125201711.GR29056@cisco.com> <5656181E.4000908@joelhalpern.com> <5656242F.7080703@gmail.com> <20151125215257.GT29056@cisco.com> <56563D92.6000109@joelhalpern.com> <20151125234035.GU29056@cisco.com> <5656530B.508@gmail.com>
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Subject: Re: [Anima-bootstrap] Bootstrap discovery question
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On Thu, Nov 26, 2015 at 01:32:11PM +1300, Brian E Carpenter wrote:
> I begin to suspect that you are using "locator" to mean more than I do.
> To me, a locator contains no semantics whatever. "<param-name>=<param-value>
> attributes" is not part of a locator.

Yes, good question how to most precisely define locator.

IMHO the IP address, protocol (eg: UDP vs. TCP, HTTPs vs. HTTP) are part
of locating the service. DNS-SD parameters may be that if they indicate
such non-negotiable parts of establishing the connection. But they might
also be something maybe better called "selector". 

> The value field of a GRASP objective is defined as "a single value or a data
> structure of any kind." So there's no problem if you want to embed whatever
> you want, such as <param-name>=<param-value> attributes. However, GRASP
> discovery is only aimed at discovering the locator of an ASA that supports a
> given objective, with the option of following up by synchronizing or negotiating
> the value. (And with Bing's favourite optimization, rapid mode discovery,
> you can discover a peer and fetch the value in one operation.)

Well, lets understand the workflow needed to select one service/objective
instance from multiple:

Lets say GRASP client is asking for tghe objective, eg: bootstrap,
and it gets three replies:

   -> reply 1 is for a protocol choice incompatible with the client.
   -> reply 2 is for a client supported protocol, but some inferior parameters
   -> reply 3 is for a client supported protocols, with better parameters

In general, you want to be able to provide the necessary information
(protocol/parameters) as part of the service/objective discovery, so
that the client can immediately pick the best compatible one.

Cheers
    Toerless

> Again, there is nothing in GRASP that prevents using DNS-SD or URI formats,
> or HTML, XML, YANG or anything else you want, once you have found the
> locator of your peer. Equally, you can use pure binary if you like.
> 
> (I agree that message sizes SHOULD be small, but they MAY be large.)
> 
>    Brian
> 
> 
> > 
> > I do agree that so far a lot of stuff below the app-layer in the IETF has
> > created as many new registries for assigned name & numbers as threy could
> > (ok, maybe a bit cynical). I really wish we could come up with a framework 
> > for anima that doesn't require contiguously new registries when new agents are
> > written.
> > 
> > Cheers
> >     Toerless
> > 
> > On Wed, Nov 25, 2015 at 06:00:34PM -0500, Joel M. Halpern wrote:
> >> I think the problem is much simpler Toerless.
> >> You want to be able to use a specific format of URL in certain 
> >> circumstances.  That particular usage seems defensible.
> >>
> >> But if we want to do that, we need to make very clear that only that 
> >> usage is allowed.  Shipping arbitrary URLs around and expecting them to 
> >> do the right thing seems at best over-optimistic.
> >>
> >> I agree that we should not invent new ways of packaging information.
> >> I am not at all sure I agree that a URL is the IETF agreed way for 
> >> packaging information at any layer other than the application layer.
> >>
> >> Yours,
> >> Joel
> >>
> >> On 11/25/15 4:52 PM, Toerless Eckert wrote:
> >>> On Thu, Nov 26, 2015 at 10:12:15AM +1300, Brian E Carpenter wrote:
> >>>> But I definitely disagree with Toerless that it would be reasonable to
> >>>> use a URI format for the purpose of carrying an (ACP) IP address. It's
> >>>> a very inefficient way to carry a 128 bit quantity that in the GRASP
> >>>> context is only needed for socket calls, so it never needs to be parsed
> >>>> or presented to a human.
> >>>
> >>> DNS-SD has string based <param-name>=<param-value> attributes. These
> >>> are carried together in a single mDNS packet if mDNS is used. AFAIK,
> >>> nobody ever argued that those have to generically be encoded more compact,
> >>> but of course everybody is aware of the UDP/mDNS packet size limitation
> >>> and makes ssure the total information does not exceed eg: 1280.
> >>>
> >>> Aka: My rule of thumb would be to always have a tight eye on fitting
> >>> GRASP service announcements within 1280 everything included. As long as
> >>> we feel safe on that, do as little additional optimization of pre-defined
> >>> data as necessary.
> >>>
> >>> If necessary, just have a CBOR binary <A>ddress attribute and then define
> >>> a URL template to use in GRASP:
> >>>
> >>>   scheme://%A/....  -> %A : Name resolves to address in <A> element
> >>>
> >>> Btw: I think we do need to have the DNS-SD parameters as well so that
> >>> we wouldn't have to reinvent the wheel for services that are well defined
> >>> via DNS-SD definitions ;-))
> >>>
> >>> Cheers
> >>>     Toerless
> >>>
> >>>>
> >>>>     Brian
> >>>>
> >>>>>
> >>>>> yours,
> >>>>> Joel
> >>>>>
> >>>>> On 11/25/15 3:17 PM, Toerless Eckert wrote:
> >>>>>> On Wed, Nov 25, 2015 at 03:02:20PM -0500, Joel M. Halpern wrote:
> >>>>>>> Yes, the key for me is what these "locators" are for.  If they are for
> >>>>>>> Anima Applications, that makes sense.  I can believe that there
> >>>>>>> applications for which a URL is a good location.  If they are for the
> >>>>>>> bootstrap process itself, that seems problematic.
> >>>>>>
> >>>>>> What is bad about rfc7030 ? https://<registrars-ipv6>//.wellknown/est
> >>>>>>
> >>>>>> How else would you want to indicate that you can support bootstrap via 
> >>>>>> RFC7030 ?
> >>>>>> Thats how it's defined. Only important details is not to use an FQDN 
> >>>>>> for the
> >>>>>> IP address of the URL.
> >>>>>>
> >>>>>>> I will also note in passing that trying to use a URL as a way of
> >>>>>>> bundling several related but separate pieces of information seems
> >>>>>>> problematic.
> >>>>>>
> >>>>>> Whot ??? Why the heck do we have URLs ? The pieces in a URL are not 
> >>>>>> several,
> >>>>>> unrelated pieces of information. The idea is to have URLs describing 
> >>>>>> the minimum
> >>>>>> necessary pieces of information to actually locate a service.
> >>>>>>
> >>>>>>> Even burying the IP address and port number in the URL
> >>>>>>> domain portion does not seem to be a good idea unless that same URL is
> >>>>>>> what is to be used to send the resulting messages (for example if the
> >>>>>>> service were on top of SOAP).
> >>>>>>
> >>>>>> The EST connection would be established to the IPv6 address in the URL, 
> >>>>>> right.
> >>>>>>
> >>>>>> There is no need for hostname DNS in ACP. Hostnames are just an 
> >>>>>> optimization
> >>>>>> for services provided by only one host. I haven't seen a requirement to 
> >>>>>> make
> >>>>>> ACP ervice discovery depend on having this redundant layer.
> >>>>>>
> >>>>>> Btw: The rfc7030 trust model for https:// between client and registrar 
> >>>>>> in the ACP is
> >>>>>> NOT based on the client believing registrar.domain is valid because of 
> >>>>>> some bogus
> >>>>>> CA signed cert for "registrar.domain", but because of
> >>>>>>
> >>>>>> a) The connection runs across an end-to-end trusted/encrypted transport 
> >>>>>> (ACP).
> >>>>>> b) The IPv6 address of the registrar and the client are derived from 
> >>>>>> their certificates.
> >>>>>>     Aka: This is similar to the "registrar.domain" trust, only that 
> >>>>>>     its mutual
> >>>>>>     and not dependent on random CAs, but both registrar and client 
> >>>>>>     cert are from the
> >>>>>>     same CA.
> >>>>>>
> >>>>>> Cheers
> >>>>>>      Toerless
> >>>>>>
> >>>>>>>
> >>>>>>> Yours,
> >>>>>>> Joel
> >>>>>>>
> >>>>>>> On 11/25/15 2:30 PM, Brian E Carpenter wrote:
> >>>>>>>> OK, I've cc'ed Joel as well since it was his review that triggered my
> >>>>>>>> question.
> >>>>>>>>
> >>>>>>>> Agreed, if we want GRASP discovery to be capable of serving as a
> >>>>>>>> general-purpose
> >>>>>>>> discovery tool, we don't really need to justify the FQDN or URI/URL
> >>>>>>>> options.
> >>>>>>>> Joel's point was essentially the same as what you say below ("where 
> >>>>>>>> the
> >>>>>>>> locator
> >>>>>>>> is in the ACP, we would require IPv6 address so that we do not 
> >>>>>>>> introduce
> >>>>>>>> the need
> >>>>>>>> for ACP-wide DNS host-name lookup and registration"). So the FQDN and
> >>>>>>>> URI/URL
> >>>>>>>> options are not for "normal" GRASP operation.
> >>>>>>>>
> >>>>>>>>       Brian
> >>>>>>>>
> >>>>>>>> On 26/11/2015 08:14, Toerless Eckert wrote:
> >>>>>>>>> [cc'ing signaling team ? (hopefully this is ok. to keep everybody in 
> >>>>>>>>> sync]
> >>>>>>>>>
> >>>>>>>>> Forget about bootstrap, but in general:
> >>>>>>>>>
> >>>>>>>>> IMHO, URL/URI is the most important locator. When someone looks for a
> >>>>>>>>> service/objective,
> >>>>>>>>> it ultimately needs to get everything to build a protocol connection 
> >>>>>>>>> to
> >>>>>>>>> achieve this
> >>>>>>>>> objective/connect-to-this-service. Which means so much more than 
> >>>>>>>>> just IP*
> >>>>>>>>> adress, but also
> >>>>>>>>> transport protocol, port, higher layer protocols, etc. pp.
> >>>>>>>>>
> >>>>>>>>> Why the heck would we want to have to reinvent messaging elements to
> >>>>>>>>> reinvent
> >>>>>>>>> signaling all those connection attributes if there is already one
> >>>>>>>>> solution for this:
> >>>>>>>>> URI.
> >>>>>>>>>
> >>>>>>>>> Example, bootstrap: The bootstrap proxy agent needs to discover the
> >>>>>>>>> "an-registrar-enrollment"
> >>>>>>>>> service (i just made up that name, somebody had to do it ;-). In 
> >>>>>>>>> return i
> >>>>>>>>> think you
> >>>>>>>>> would get back (according to RFC7030, 3.2.2):
> >>>>>>>>>
> >>>>>>>>> https://<ipv6addr-of-registrar>{:<port>}/.well-known/est
> >>>>>>>>>
> >>>>>>>>> Of course we could support multiple enrollment protocols, but every 
> >>>>>>>>> proxy
> >>>>>>>>> that does
> >>>>>>>>> support rfc7030 would recognize this as a URI indicating RFC7030. 
> >>>>>>>>> This is
> >>>>>>>>> because of
> >>>>>>>>> /.well-known/est. And it then knows the necessary transport protocol
> >>>>>>>>> pieces: IPv6
> >>>>>>>>> addr and port and use of HTTPS. As a rule of thumb for services 
> >>>>>>>>> where the
> >>>>>>>>> locator is
> >>>>>>>>> in the ACP, we would require IPv6 address so that we do not 
> >>>>>>>>> introduce the
> >>>>>>>>> need for
> >>>>>>>>> ACP-wide DNS host-name lookup and registration.
> >>>>>>>>>
> >>>>>>>>> If there is a way to reuse more/better our existing IETF toolset, 
> >>>>>>>>> please
> >>>>>>>>> chime in.
> >>>>>>>>>
> >>>>>>>>> Cheers
> >>>>>>>>>      Toerless
> >>>>>>>>>
> >>>>>>>>> On Thu, Nov 26, 2015 at 07:53:42AM +1300, Brian E Carpenter wrote:
> >>>>>>>>>> Here's a hopefully simple question from the GRASP side of the house.
> >>>>>>>>>>
> >>>>>>>>>> If the bootstrap uses GRASP discovery, what sort of locator will
> >>>>>>>>>> it be trying to discover?
> >>>>>>>>>>
> >>>>>>>>>> At the moment GRASP has four locator types in the design:
> >>>>>>>>>>
> >>>>>>>>>> - IPv6 address
> >>>>>>>>>> - IPv4 address
> >>>>>>>>>> - FQDN
> >>>>>>>>>> - URL
> >>>>>>>>>>
> >>>>>>>>>> It's been suggested by a reviewer that the URL option is 
> >>>>>>>>>> unnecessary.
> >>>>>>>>>>
> >>>>>>>>>> Regards
> >>>>>>>>>>     Brian
> >>>>>>>>>>
> >>>>>>>>>> _______________________________________________
> >>>>>>>>>> Anima-bootstrap mailing list
> >>>>>>>>>> Anima-bootstrap@ietf.org
> >>>>>>>>>> https://www.ietf.org/mailman/listinfo/anima-bootstrap
> >>>>>>>>>
> >>>>>>>>
> >>>>>>
> >>>>>
> >>>
> > 

-- 
---
Toerless Eckert, eckert@cisco.com


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To: Toerless Eckert <eckert@cisco.com>
References: <20151125191407.GP29056@cisco.com> <56560C3F.9030304@gmail.com> <565613CC.1040903@joelhalpern.com> <20151125201711.GR29056@cisco.com> <5656181E.4000908@joelhalpern.com> <5656242F.7080703@gmail.com> <20151125215257.GT29056@cisco.com> <56563D92.6000109@joelhalpern.com> <20151125234035.GU29056@cisco.com> <5656530B.508@gmail.com> <20151126005233.GX29056@cisco.com>
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
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Subject: Re: [Anima-bootstrap] Bootstrap discovery question
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On 26/11/2015 13:52, Toerless Eckert wrote:
> On Thu, Nov 26, 2015 at 01:32:11PM +1300, Brian E Carpenter wrote:
>> I begin to suspect that you are using "locator" to mean more than I do.
>> To me, a locator contains no semantics whatever. "<param-name>=<param-value>
>> attributes" is not part of a locator.
> 
> Yes, good question how to most precisely define locator.
> 
> IMHO the IP address, protocol (eg: UDP vs. TCP, HTTPs vs. HTTP) are part
> of locating the service. DNS-SD parameters may be that if they indicate
> such non-negotiable parts of establishing the connection. But they might
> also be something maybe better called "selector". 
> 
>> The value field of a GRASP objective is defined as "a single value or a data
>> structure of any kind." So there's no problem if you want to embed whatever
>> you want, such as <param-name>=<param-value> attributes. However, GRASP
>> discovery is only aimed at discovering the locator of an ASA that supports a
>> given objective, with the option of following up by synchronizing or negotiating
>> the value. (And with Bing's favourite optimization, rapid mode discovery,
>> you can discover a peer and fetch the value in one operation.)
> 
> Well, lets understand the workflow needed to select one service/objective
> instance from multiple:
> 
> Lets say GRASP client is asking for tghe objective, eg: bootstrap,
> and it gets three replies:
> 
>    -> reply 1 is for a protocol choice incompatible with the client.
>    -> reply 2 is for a client supported protocol, but some inferior parameters
>    -> reply 3 is for a client supported protocols, with better parameters
> 
> In general, you want to be able to provide the necessary information
> (protocol/parameters) as part of the service/objective discovery, so
> that the client can immediately pick the best compatible one.

Yes. With GRASP as currently designed you would do that by executing
discover/synch for an objective called, say "trust_relay" and the
objective values returned would be [protocol_name, *parameter_value].
This is a case where the GRASP client wants all the replies, not
just the first one.

    Brian


> 
> Cheers
>     Toerless
> 
>> Again, there is nothing in GRASP that prevents using DNS-SD or URI formats,
>> or HTML, XML, YANG or anything else you want, once you have found the
>> locator of your peer. Equally, you can use pure binary if you like.
>>
>> (I agree that message sizes SHOULD be small, but they MAY be large.)
>>
>>    Brian
>>
>>
>>>
>>> I do agree that so far a lot of stuff below the app-layer in the IETF has
>>> created as many new registries for assigned name & numbers as threy could
>>> (ok, maybe a bit cynical). I really wish we could come up with a framework 
>>> for anima that doesn't require contiguously new registries when new agents are
>>> written.
>>>
>>> Cheers
>>>     Toerless
>>>
>>> On Wed, Nov 25, 2015 at 06:00:34PM -0500, Joel M. Halpern wrote:
>>>> I think the problem is much simpler Toerless.
>>>> You want to be able to use a specific format of URL in certain 
>>>> circumstances.  That particular usage seems defensible.
>>>>
>>>> But if we want to do that, we need to make very clear that only that 
>>>> usage is allowed.  Shipping arbitrary URLs around and expecting them to 
>>>> do the right thing seems at best over-optimistic.
>>>>
>>>> I agree that we should not invent new ways of packaging information.
>>>> I am not at all sure I agree that a URL is the IETF agreed way for 
>>>> packaging information at any layer other than the application layer.
>>>>
>>>> Yours,
>>>> Joel
>>>>
>>>> On 11/25/15 4:52 PM, Toerless Eckert wrote:
>>>>> On Thu, Nov 26, 2015 at 10:12:15AM +1300, Brian E Carpenter wrote:
>>>>>> But I definitely disagree with Toerless that it would be reasonable to
>>>>>> use a URI format for the purpose of carrying an (ACP) IP address. It's
>>>>>> a very inefficient way to carry a 128 bit quantity that in the GRASP
>>>>>> context is only needed for socket calls, so it never needs to be parsed
>>>>>> or presented to a human.
>>>>>
>>>>> DNS-SD has string based <param-name>=<param-value> attributes. These
>>>>> are carried together in a single mDNS packet if mDNS is used. AFAIK,
>>>>> nobody ever argued that those have to generically be encoded more compact,
>>>>> but of course everybody is aware of the UDP/mDNS packet size limitation
>>>>> and makes ssure the total information does not exceed eg: 1280.
>>>>>
>>>>> Aka: My rule of thumb would be to always have a tight eye on fitting
>>>>> GRASP service announcements within 1280 everything included. As long as
>>>>> we feel safe on that, do as little additional optimization of pre-defined
>>>>> data as necessary.
>>>>>
>>>>> If necessary, just have a CBOR binary <A>ddress attribute and then define
>>>>> a URL template to use in GRASP:
>>>>>
>>>>>   scheme://%A/....  -> %A : Name resolves to address in <A> element
>>>>>
>>>>> Btw: I think we do need to have the DNS-SD parameters as well so that
>>>>> we wouldn't have to reinvent the wheel for services that are well defined
>>>>> via DNS-SD definitions ;-))
>>>>>
>>>>> Cheers
>>>>>     Toerless
>>>>>
>>>>>>
>>>>>>     Brian
>>>>>>
>>>>>>>
>>>>>>> yours,
>>>>>>> Joel
>>>>>>>
>>>>>>> On 11/25/15 3:17 PM, Toerless Eckert wrote:
>>>>>>>> On Wed, Nov 25, 2015 at 03:02:20PM -0500, Joel M. Halpern wrote:
>>>>>>>>> Yes, the key for me is what these "locators" are for.  If they are for
>>>>>>>>> Anima Applications, that makes sense.  I can believe that there
>>>>>>>>> applications for which a URL is a good location.  If they are for the
>>>>>>>>> bootstrap process itself, that seems problematic.
>>>>>>>>
>>>>>>>> What is bad about rfc7030 ? https://<registrars-ipv6>//.wellknown/est
>>>>>>>>
>>>>>>>> How else would you want to indicate that you can support bootstrap via 
>>>>>>>> RFC7030 ?
>>>>>>>> Thats how it's defined. Only important details is not to use an FQDN 
>>>>>>>> for the
>>>>>>>> IP address of the URL.
>>>>>>>>
>>>>>>>>> I will also note in passing that trying to use a URL as a way of
>>>>>>>>> bundling several related but separate pieces of information seems
>>>>>>>>> problematic.
>>>>>>>>
>>>>>>>> Whot ??? Why the heck do we have URLs ? The pieces in a URL are not 
>>>>>>>> several,
>>>>>>>> unrelated pieces of information. The idea is to have URLs describing 
>>>>>>>> the minimum
>>>>>>>> necessary pieces of information to actually locate a service.
>>>>>>>>
>>>>>>>>> Even burying the IP address and port number in the URL
>>>>>>>>> domain portion does not seem to be a good idea unless that same URL is
>>>>>>>>> what is to be used to send the resulting messages (for example if the
>>>>>>>>> service were on top of SOAP).
>>>>>>>>
>>>>>>>> The EST connection would be established to the IPv6 address in the URL, 
>>>>>>>> right.
>>>>>>>>
>>>>>>>> There is no need for hostname DNS in ACP. Hostnames are just an 
>>>>>>>> optimization
>>>>>>>> for services provided by only one host. I haven't seen a requirement to 
>>>>>>>> make
>>>>>>>> ACP ervice discovery depend on having this redundant layer.
>>>>>>>>
>>>>>>>> Btw: The rfc7030 trust model for https:// between client and registrar 
>>>>>>>> in the ACP is
>>>>>>>> NOT based on the client believing registrar.domain is valid because of 
>>>>>>>> some bogus
>>>>>>>> CA signed cert for "registrar.domain", but because of
>>>>>>>>
>>>>>>>> a) The connection runs across an end-to-end trusted/encrypted transport 
>>>>>>>> (ACP).
>>>>>>>> b) The IPv6 address of the registrar and the client are derived from 
>>>>>>>> their certificates.
>>>>>>>>     Aka: This is similar to the "registrar.domain" trust, only that 
>>>>>>>>     its mutual
>>>>>>>>     and not dependent on random CAs, but both registrar and client 
>>>>>>>>     cert are from the
>>>>>>>>     same CA.
>>>>>>>>
>>>>>>>> Cheers
>>>>>>>>      Toerless
>>>>>>>>
>>>>>>>>>
>>>>>>>>> Yours,
>>>>>>>>> Joel
>>>>>>>>>
>>>>>>>>> On 11/25/15 2:30 PM, Brian E Carpenter wrote:
>>>>>>>>>> OK, I've cc'ed Joel as well since it was his review that triggered my
>>>>>>>>>> question.
>>>>>>>>>>
>>>>>>>>>> Agreed, if we want GRASP discovery to be capable of serving as a
>>>>>>>>>> general-purpose
>>>>>>>>>> discovery tool, we don't really need to justify the FQDN or URI/URL
>>>>>>>>>> options.
>>>>>>>>>> Joel's point was essentially the same as what you say below ("where 
>>>>>>>>>> the
>>>>>>>>>> locator
>>>>>>>>>> is in the ACP, we would require IPv6 address so that we do not 
>>>>>>>>>> introduce
>>>>>>>>>> the need
>>>>>>>>>> for ACP-wide DNS host-name lookup and registration"). So the FQDN and
>>>>>>>>>> URI/URL
>>>>>>>>>> options are not for "normal" GRASP operation.
>>>>>>>>>>
>>>>>>>>>>       Brian
>>>>>>>>>>
>>>>>>>>>> On 26/11/2015 08:14, Toerless Eckert wrote:
>>>>>>>>>>> [cc'ing signaling team ? (hopefully this is ok. to keep everybody in 
>>>>>>>>>>> sync]
>>>>>>>>>>>
>>>>>>>>>>> Forget about bootstrap, but in general:
>>>>>>>>>>>
>>>>>>>>>>> IMHO, URL/URI is the most important locator. When someone looks for a
>>>>>>>>>>> service/objective,
>>>>>>>>>>> it ultimately needs to get everything to build a protocol connection 
>>>>>>>>>>> to
>>>>>>>>>>> achieve this
>>>>>>>>>>> objective/connect-to-this-service. Which means so much more than 
>>>>>>>>>>> just IP*
>>>>>>>>>>> adress, but also
>>>>>>>>>>> transport protocol, port, higher layer protocols, etc. pp.
>>>>>>>>>>>
>>>>>>>>>>> Why the heck would we want to have to reinvent messaging elements to
>>>>>>>>>>> reinvent
>>>>>>>>>>> signaling all those connection attributes if there is already one
>>>>>>>>>>> solution for this:
>>>>>>>>>>> URI.
>>>>>>>>>>>
>>>>>>>>>>> Example, bootstrap: The bootstrap proxy agent needs to discover the
>>>>>>>>>>> "an-registrar-enrollment"
>>>>>>>>>>> service (i just made up that name, somebody had to do it ;-). In 
>>>>>>>>>>> return i
>>>>>>>>>>> think you
>>>>>>>>>>> would get back (according to RFC7030, 3.2.2):
>>>>>>>>>>>
>>>>>>>>>>> https://<ipv6addr-of-registrar>{:<port>}/.well-known/est
>>>>>>>>>>>
>>>>>>>>>>> Of course we could support multiple enrollment protocols, but every 
>>>>>>>>>>> proxy
>>>>>>>>>>> that does
>>>>>>>>>>> support rfc7030 would recognize this as a URI indicating RFC7030. 
>>>>>>>>>>> This is
>>>>>>>>>>> because of
>>>>>>>>>>> /.well-known/est. And it then knows the necessary transport protocol
>>>>>>>>>>> pieces: IPv6
>>>>>>>>>>> addr and port and use of HTTPS. As a rule of thumb for services 
>>>>>>>>>>> where the
>>>>>>>>>>> locator is
>>>>>>>>>>> in the ACP, we would require IPv6 address so that we do not 
>>>>>>>>>>> introduce the
>>>>>>>>>>> need for
>>>>>>>>>>> ACP-wide DNS host-name lookup and registration.
>>>>>>>>>>>
>>>>>>>>>>> If there is a way to reuse more/better our existing IETF toolset, 
>>>>>>>>>>> please
>>>>>>>>>>> chime in.
>>>>>>>>>>>
>>>>>>>>>>> Cheers
>>>>>>>>>>>      Toerless
>>>>>>>>>>>
>>>>>>>>>>> On Thu, Nov 26, 2015 at 07:53:42AM +1300, Brian E Carpenter wrote:
>>>>>>>>>>>> Here's a hopefully simple question from the GRASP side of the house.
>>>>>>>>>>>>
>>>>>>>>>>>> If the bootstrap uses GRASP discovery, what sort of locator will
>>>>>>>>>>>> it be trying to discover?
>>>>>>>>>>>>
>>>>>>>>>>>> At the moment GRASP has four locator types in the design:
>>>>>>>>>>>>
>>>>>>>>>>>> - IPv6 address
>>>>>>>>>>>> - IPv4 address
>>>>>>>>>>>> - FQDN
>>>>>>>>>>>> - URL
>>>>>>>>>>>>
>>>>>>>>>>>> It's been suggested by a reviewer that the URL option is 
>>>>>>>>>>>> unnecessary.
>>>>>>>>>>>>
>>>>>>>>>>>> Regards
>>>>>>>>>>>>     Brian
>>>>>>>>>>>>
>>>>>>>>>>>> _______________________________________________
>>>>>>>>>>>> Anima-bootstrap mailing list
>>>>>>>>>>>> Anima-bootstrap@ietf.org
>>>>>>>>>>>> https://www.ietf.org/mailman/listinfo/anima-bootstrap
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>
>>>
> 


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Brian E Carpenter <brian.e.carpenter@gmail.com> wrote:
    > Here's a hopefully simple question from the GRASP side of the house.

    > If the bootstrap uses GRASP discovery, what sort of locator will
    > it be trying to discover?

It would be a service.  Are services represented by FQDNs or URLs?
I suppose it could be an IPv6 (multicast) address.

--
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To: Michael Richardson <mcr+ietf@sandelman.ca>
References: <565603B6.3030508@gmail.com> <28678.1448641638@sandelman.ca>
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
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Subject: Re: [Anima-bootstrap] Bootstrap discovery question
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On 28/11/2015 05:27, Michael Richardson wrote:
> 
> Brian E Carpenter <brian.e.carpenter@gmail.com> wrote:
>     > Here's a hopefully simple question from the GRASP side of the house.
> 
>     > If the bootstrap uses GRASP discovery, what sort of locator will
>     > it be trying to discover?
> 
> It would be a service.  Are services represented by FQDNs or URLs?

Not if it's inside a network which is still bootstrapping and doesn't
yet have a name space. But GRASP is agnostic on that; it's for the
bootstrap mechanism to decide.

> I suppose it could be an IPv6 (multicast) address.

Why multicast? Aren't you trying to discover a specific instance?

   Brian


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From: peter van der Stok <stokcons@xs4all.nl>
To: Michael Richardson <mcr+ietf@sandelman.ca>
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Hi Michael,

Your text proposal does not help me much.

> +      <section title="Scope of solution">
> +        <t>
> +          Questions have been posed as to whether this solution is 
> suitable
> +          in general for Internet of Things (IoT) networks.  In 
> general the
> +          answer is no, but the terminology of <xref target="RFC7228" 
> /> is
> +          best used to describe the boundaries.
> +        </t>

The above text is much more restrictive than the text below.

> +        <t>
> +          Specifically, there are protocol aspects described here 
> which
> might
> +          result in congestion collapse or energy-exhaustion of 
> intermediate
> +          battery powered routers in an LLN.  Those types of networks 
> SHOULD
> +          NOT use this solution.
> +        </t>
> +      </section>

I think the text about battery-powered or energy harvesting devices is 
the more appropriate.

What about text that formulates unwanted side effects coming from energy 
exhausted ("dead") nodes?
I don't think the dying of a node is allowed to jeopardize the 
functioning for other nodes or cause congestion, as your text suggests.

Some effort on getting this right is worthwhile, because I think the use 
of the anima Bootstrap may be interesting for the installation of large 
control networks, where
the verification of the correct functioning of the network as such is 
clearly separated from the correct functioning of the (control-) 
application on top.

Peter



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--=-=-=
Content-Type: text/plain


peter van der Stok <stokcons@xs4all.nl> wrote:
    > Hi Michael,

    > Your text proposal does not help me much.

Oh, I am sad.

peter van der Stok <stokcons@xs4all.nl> wrote:
    >> +      <section title="Scope of solution">
    >> +        <t>
    >> +          Questions have been posed as to whether this solution is suitable
    >> +          in general for Internet of Things (IoT) networks.  In general the
    >> +          answer is no, but the terminology of <xref target="RFC7228" /> is
    >> +          best used to describe the boundaries.
    >> +        </t>

    > The above text is much more restrictive than the text below.

So, my intention is to make people argue why IoT should be covered, rather
than assume it is unless not specified.

    >> +        <t>
    >> +          Specifically, there are protocol aspects described here which might
    >> +          result in congestion collapse or energy-exhaustion of intermediate
    >> +          battery powered routers in an LLN.  Those types of networks SHOULD
    >> +          NOT use this solution.
    >> +        </t>
    >> +      </section>

    > I think the text about battery-powered or energy harvesting devices is the
    > more appropriate.

Agreed.

    > What about text that formulates unwanted side effects coming from energy
    > exhausted ("dead") nodes?
    > I don't think the dying of a node is allowed to jeopardize the functioning
    > for other nodes or cause congestion, as your text suggests.

    > Some effort on getting this right is worthwhile, because I think the use of
    > the anima Bootstrap may be interesting for the installation of large control
    > networks, where
    > the verification of the correct functioning of the network as such is clearly
    > separated from the correct functioning of the (control-)
    > application on top.

Here is a use case that I imagine.

There is an existing LLN with a 6LBR and a backbone connection.
By construction, it has some energy constrained nodes in it, which function
just fine.

The LLN is to be expanded to service some new requirement. While the existing
6LBR can reach the new space, it won't work reliably enough, so a new 6LBR is
installed in the new space.  The 6LBR is ANIMA capable, and is mains powered,
and the new backhaul will be 802.11.  The new device doesn't have WEP/WPA
keys (and the AP doesn't speak ANIMA), but it does speak the 6tisch join
protocol, so it joins the existing LLN as a leaf.  Then, using the LLN, it
performs an *ANIMA* enrollment, with the LLN acting as a single "link" from
the ANIMA point of view.

Once enrolled, it has a domain specific certificate, has been provisioned
with the right WEP key, and can now enable the wifi as backbone.

Another use case might be a BFR in a cabinet that is being cabled up, but
said cables are not yet "lit".  It has been given a BTLE USB key into one of
it's USB slots usually intended for firmware updates.  The BFR does a pairing
over BTLE with the installers' smartphone, and using rfc7688, and connects to
the ACP that the smartphone is part of.  The BFR is now "up" enough for the
experts in the NOC to bring things up.  They might need to configure the
right lambdas for the 100G link to turn on... or instruct the cabling people
which cable goes into which port. (cables *never* get mis-labelled..)

In this context, the smartphone is energy constrained, and getting the ACP
off of it ASAP would be important.

--
Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
 -= IPv6 IoT consulting =-




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