Re: [Roll] I-D Action: draft-ietf-roll-applicability-home-building-05.txt

Dear Anders, Emmanuel, Robert, Peter

Thanks for the updated draft. I have a few questions and comments and would like your feedback as well as opinion from the mailing list.

1. In 2.2.7. The authors argue that P2P-RPL is required for P2P and P2MP traffic in home and building automation LLNs instead of basic RPL.

I fully agree that P2P-RPL is used for P2P traffic, but for P2MP traffic it often makes sense to use basic LLN, also in home and building automation LLNs. I suggest to include both P2P-RPL and basic RPL in the recommended protocol portfolio for home and building automation.

2.  (related to 1.) In 4.1.3. The authors consider DAO policy to be out of scope. However, if basic RPL is applicable for home and building automation scenarios then due to P2MP traffic  from roots DAOs are required. As in the industrial applicability statement I thus recommend a paragraph such as "Nodes send DAO messages to establish downward paths from the root to themselves. DAO messages are not acknowledged in networks composed of battery operated field devices in order to minimize the power consumption overhead associated with path discovery.  If devices in LLNs participate in multiple RPL instances and DODAGs, it is highly recommended that both the RPLInstance ID and the DODAGID be included in the DAO."  If the mailing list consensus is that P2P RPL is to be used only, then this Section should state that DAO messages are not sent in this case. In addition a comment on P2P-DRO  Acknowledgement (P2P-DRO-ACK) would be helpful

3. Please correct 4.1.4. OF0 is not a metric. Did you mean ETX or HC? Or another metric from http://tools.ietf.org/html/rfc6551#section-6.1 ?

4. Please state why a value of DIO max interval of 4.37min (16ms x 2^14) is appropriate, it seems like a much smaller value would be suitable for this usecase

5. About Section 6, 2hy would manageability be out of scope for home network scenarios? And can you give more detail on what central control based on MIBs entails?                     

Regards
Yvonne-Anne

Yvonne-Anne Pignolet
Dr. Sc. ETH Zürich
ABB Corporate Research
Segelhofstrasse 1K
5400 Baden-Dättwil, Switzerland
Phone: +41 58 586 86 56
Mobile: +41 79 766 10 54
email: yvonne-anne.pignolet@ch.abb.com

-----Original Message-----
From: Roll [mailto:roll-bounces@ietf.org] On Behalf Of peter van der Stok
Sent: Dienstag, 7. Oktober 2014 00:10
To: roll@ietf.org
Subject: [Roll] Fwd: I-D Action: draft-ietf-roll-applicability-home-building-05.txt

Dear wg,

We submitted draft nr 5 of the home building applicability draft.
Major changes with respect to draft nr 4

    o  Large editing effort to streamline text

    o  Rearranged Normative and Informative references

    o  Replaced RFC2119 terminology by non-normative terminology

    o  Rearranged section 5 to better separate the subjects

    o  Rearranged text of section 7, 7.1, and 7.2 to agree with the
       intention of section 7.2 as described in applicability template.

We consider the draft as done and look forward to the next step: wglc.

Peter

-------- Oorspronkelijke bericht --------
Onderwerp: [Roll] I-D Action: 
draft-ietf-roll-applicability-home-building-05.txt
Datum: 2014-10-06 09:43
Afzender: internet-drafts@ietf.org
Ontvanger: i-d-announce@ietf.org
Kopie: roll@ietf.org
Antwoord-aan: Routing Over Low power and Lossy networks <roll@ietf.org>

A New Internet-Draft is available from the on-line Internet-Drafts directories.
  This draft is a work item of the Routing Over Low power and Lossy networks Working Group of the IETF.

         Title           : Applicability Statement: The use of the RPL 
protocol suite in Home Automation and Building Control
         Authors         : Anders Brandt
                           Emmanuel Baccelli
                           Robert Cragie
                           Peter van der Stok
	Filename        : draft-ietf-roll-applicability-home-building-05.txt
	Pages           : 30
	Date            : 2014-10-06

Abstract:
    The purpose of this document is to provide guidance in the selection
    and use of protocols from the RPL protocol suite to implement the
    features required for control in building and home environments.

The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-roll-applicability-home-building/

There's also a htmlized version available at:
http://tools.ietf.org/html/draft-ietf-roll-applicability-home-building-05

A diff from the previous version is available at:
http://www.ietf.org/rfcdiff?url2=draft-ietf-roll-applicability-home-building-05

Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org.

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/

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