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Date: Tue, 15 Apr 2014 09:02:48 +0200
From: Enrico Marocco <enrico.marocco@telecomitalia.it>
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Subject: [alto] Revised charter update
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Hi all,

below you can find an updated version of the charter that should reflect
the comments and discussions the WG had in London and afterwards.

We would like to give people another week for reviewing and commenting,
before sending it to the responsible AD and possibly the IESG for
consideration.

Enrico and Vijay



Application-Layer Traffic Optimization Working Group Charter

The ALTO working group was established in 2008 to devise a
request/response protocol for allowing a host to benefit from a server
that is more cognizant of the network infrastructure than the host
would be. The working group has developed an HTTP-based protocol
(RFC-to-be) to allow hosts to benefit from the network infrastructure
by having access to a pair of maps: a topology map and a cost map.

The origins of the ALTO protocol lie in peer-to-peer (P2P)
applications, where the host is a peer in a P2P network and desires a
rendezvous with other peers for file sharing, real-time
communications, etc. It is a testament to the flexibility of the ALTO
protocol that it is now being considered as a solution for problems
outside the P2P domain, such as in datacenter networks and in content
distribution networks (CDN) where exposing abstract topologies helps
applications.

To support the emerging new uses of ALTO, certain extensions are being
sought. These extensions can be classified as follows:

   o Protocol extensions for reducing the volume of on-the-wire data
     exchange required to align the ALTO server and
     clients. Extensions under consideration are mechanisms for
     delivering server-initiated notifications and partial updates of
     maps.  Efforts developed in other working groups such as
     Websockets and JSON-patch will be considered, as well as bespoke
     mechanisms specific to the ALTO protocol.

   o Extensions to the base ALTO server discovery mechanism
     (RFC-to-be) for deployment in heterogeneous network environments.
     Mechanisms under consideration are extensions for third-party and
     anycast-based server discovery.  Because the issue of third-party
     server discovery is broad and not particular to ALTO, the WG will
     prefer to use server discovery mechanisms produced by other
     working groups especially chartered to do so.  In the absence of
     such existing work, the WG will develop an ALTO-specific
     third-party server discovery mechanism.

   o Protocol extensions to convey a richer set of attributes to allow
     applications to determine not only "where" to connect but also
     "when" to connect.  Such additional information will be related
     both to endpoints (e.g. conveying server load and cache
     geo-location information for CDN use cases) and to
     endpoint-to-endpoint costs (e.g. bandwidth calendaring to
     represent time-averaged cost values in datacenter networks).

     The working group will specify such extension in coordination
     with other working groups that have a focus on the related use
     cases.  The scope of extensions is not limited to those
     identified by the WGs.

   o A document specifying how a graph representation format
     (e.g. originating from a YANG data model) can be used in ALTO and
     optionally be exported by an ALTO server in addition to network
     and cost maps. The WG will only consider abstract representation
     of the network layer; it will not consider, nor will it model,
     raw network topology, routing protocols, or RIB data.

When the WG considers standardizing information that the ALTO server
could provide, the following criteria are important to ensure real
feasibility:

   - Can the ALTO service realistically discover that information?

   - Is the distribution of that information allowed by the operators
     of that service?

   - Can a client get that information without excessive privacy
     concerns?  Extensions defining new endpoint properties should
     focus on exposing attributes of endpoints that are related to the
     goals of ALTO -- optimization of application-layer traffic -- as
     opposed to more general properties of endpoints. Privacy aspects
     of new endpoint properties will in any case be evaluated to the
     guidelines provided in the IANA considerations and Security
     Considerations of the ALTO protocol specification (RFC-to-be,
     sections 14.3 and 15.4 at IESG review time).

    - Is it information that a client cannot find easily some other
      way?

After these criteria are met, the importance of the data will be
considered for prioritizing standardization work, for example the
number of operators and clients that are likely to be able to provide
or use that particular data. In any case, this WG will not propose
standards on how congestion is signaled, remediated, or avoided, and
will not deal with information representing instantaneous network
state.

Issues related to the specific content exchanged in systems that make
use of ALTO are also excluded from the WG's scope, as is the issue
dealing with enforcing the legality of the content.


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From nobody Mon Apr 28 10:47:16 2014
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Date: Mon, 28 Apr 2014 12:48:50 -0500
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Subject: [alto] Any input on charter update?
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Folks: In case you missed it, we posted the collective knowledge of the
WG on the charter update [1].  No one has responded yet to any changes,
etc.  Based on the heuristic that silence implies acquiescence, Enrico
and I would like to ensure that this is indeed the case.

We will be sending the charter in [1] to the IESG on Wednesday, April 30
2014.  If you have any comments before then, please do express them on
the list.

Cheers,

[1] http://www.ietf.org/mail-archive/web/alto/current/msg02455.html

Vijay K. Gurbani and Enrico Marocco


From nobody Mon Apr 28 12:06:35 2014
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Date: Mon, 28 Apr 2014 15:06:15 -0400
From: Wendy Roome <w.roome@alcatel-lucent.com>
To: IETF ALTO <alto@ietf.org>
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Thread-Topic: Experimental ALTO validators
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Subject: [alto] Experimental ALTO validators
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I=B9ve setup two web pages to validate ALTO:

http://www.wdroome.com/alto/validate-msg.php validates JSON messages.
Paste JSON into the text box, select a media type, and click VALIDATE. The
page scans the JSON and reports any problems.

http://www.wdroome.com/alto/validate-server.php validates an ALTO server.
Enter the URI of an ALTO IRD and click VALIDATE. It reads the IRD, fetches
all full network and cost maps, verifies that the response messages are
valid, and verifies that they are mutually consistent (e.g., every PID in
a cost map is defined in the network map). It also gives a quick summary
of each resource: fetch time, number of PIDs, number of costs, etc.


Of course, this is my implementation of my interpretation of the latest
ALTO draft. Either may be faulty! The web pages let you report incorrect
validations. Or send me email.

	- Wendy Roome

PS: The lawyers insisted I attach a =B3Terms Of Use=B2 agreement. Some
provisions are important (e.g., we reserve the right to withdraw the
service at any time). But some are totally off the wall (e.g., it forbids
you from uploading copyrighted or pornographic materials). So treat it
like you=B9d treat any other EULA.



From nobody Mon Apr 28 19:51:24 2014
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From: "Y. Richard Yang" <yry@cs.yale.edu>
To: "Vijay K. Gurbani" <vkg@bell-labs.com>
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Subject: Re: [alto] Any input on charter update?
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--001a11c20810a6702b04f8258165
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Hi Vijay, Enrico,

The charter updates look great to me, and hence, I did not send in any
update. It has my support.

Thanks!

Richard

On Monday, April 28, 2014, Vijay K. Gurbani <vkg@bell-labs.com> wrote:

> Folks: In case you missed it, we posted the collective knowledge of the
> WG on the charter update [1].  No one has responded yet to any changes,
> etc.  Based on the heuristic that silence implies acquiescence, Enrico
> and I would like to ensure that this is indeed the case.
>
> We will be sending the charter in [1] to the IESG on Wednesday, April 30
> 2014.  If you have any comments before then, please do express them on
> the list.
>
> Cheers,
>
> [1] http://www.ietf.org/mail-archive/web/alto/current/msg02455.html
>
> Vijay K. Gurbani and Enrico Marocco
>
> _______________________________________________
> alto mailing list
> alto@ietf.org
> https://www.ietf.org/mailman/listinfo/alto
>


-- 
-- 
 =====================================
| Y. Richard Yang <yry@cs.yale.edu>   |
| Professor of Computer Science       |
| http://www.cs.yale.edu/~yry/        |
 =====================================

--001a11c20810a6702b04f8258165
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Hi Vijay, Enrico,<div><br></div><div>The charter updates look great to me, =
and hence, I did not send in any update. It has my support.</div><div><br><=
/div><div>Thanks!</div><div><br></div><div>Richard<br><br>On Monday, April =
28, 2014, Vijay K. Gurbani &lt;<a href=3D"mailto:vkg@bell-labs.com">vkg@bel=
l-labs.com</a>&gt; wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">Folks: In case you missed it, we posted the =
collective knowledge of the<br>
WG on the charter update [1]. =C2=A0No one has responded yet to any changes=
,<br>
etc. =C2=A0Based on the heuristic that silence implies acquiescence, Enrico=
<br>
and I would like to ensure that this is indeed the case.<br>
<br>
We will be sending the charter in [1] to the IESG on Wednesday, April 30<br=
>
2014. =C2=A0If you have any comments before then, please do express them on=
<br>
the list.<br>
<br>
Cheers,<br>
<br>
[1] <a href=3D"http://www.ietf.org/mail-archive/web/alto/current/msg02455.h=
tml" target=3D"_blank">http://www.ietf.org/mail-<u></u>archive/web/alto/cur=
rent/<u></u>msg02455.html</a><br>
<br>
Vijay K. Gurbani and Enrico Marocco<br>
<br>
______________________________<u></u>_________________<br>
alto mailing list<br>
<a>alto@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/alto" target=3D"_blank">ht=
tps://www.ietf.org/mailman/<u></u>listinfo/alto</a><br>
</blockquote></div><br><br>-- <br><div dir=3D"ltr"><div><font face=3D"couri=
er new, monospace">--=C2=A0</font></div><div><font face=3D"courier new, mon=
ospace">=C2=A0=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D</font></div><div><font =
face=3D"courier new, monospace">| Y. Richard Yang &lt;<a href=3D"mailto:yry=
@cs.yale.edu" target=3D"_blank">yry@cs.yale.edu</a>&gt; =C2=A0 |</font></di=
v>
<div><font face=3D"courier new, monospace">| Professor of Computer Science =
=C2=A0 =C2=A0 =C2=A0 |</font></div><div><font face=3D"courier new, monospac=
e">| <a href=3D"http://www.cs.yale.edu/~yry/" target=3D"_blank">http://www.=
cs.yale.edu/~yry/</a> =C2=A0 =C2=A0 =C2=A0 =C2=A0|</font></div>
<div><font face=3D"courier new, monospace">=C2=A0=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D</font></div></div><br>

--001a11c20810a6702b04f8258165--


From nobody Tue Apr 29 13:26:32 2014
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Date: Tue, 29 Apr 2014 16:26:22 -0400
From: Wendy Roome <w.roome@alcatel-lucent.com>
To: IETF ALTO <alto@ietf.org>
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Slight correction: we=B9d prefer that you access the validators via these
URLs:

http://alto.alcatel-lucent.com:8000/validate-msg  =8B for the JSON message
validator

http://alto.alcatel-lucent.com:8000/validate-server  =8B for the ALTO server
validator

	- Wendy Roome


