Re: [manet] Benoit Claise's Discuss on draft-ietf-manet-olsrv2-multitopology-05: (with DISCUSS)

Benoit Claise <bclaise@cisco.com> Fri, 03 July 2015 06:00 UTC

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From: Benoit Claise <bclaise@cisco.com>
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Date: Fri, 03 Jul 2015 08:00:29 +0200
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Cc: draft-ietf-manet-olsrv2-multitopology@ietf.org, ops-dir@ietf.org, manet@ietf.org, 'The IESG' <iesg@ietf.org>, manet-chairs@ietf.org
Subject: Re: [manet] Benoit Claise's Discuss on draft-ietf-manet-olsrv2-multitopology-05: (with DISCUSS)
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Dear all,
>
> *To the Manet author of the comments: *
>
> To help with the comments:  I've pulled them up.
>
> >>The suggestions for tests made in the Ops-Dir review are great!
>
> >>However, I don¹t believe that such detail belongs in this document,
>
> >>where the main purpose is to document the extension.  In fact, I think
>
> >>the suggestions belong more as part of a test plan (used by
>
> >>implementors ‹ similar maybe to the work done in bmwg, for example),
>
> >>which seems to be in line with the
>
> >>comments: (Sue wrote) ³The recommended tests in major concern 1-4 could
>
> >>be created in a separate draft.²
>
> *Let's go to the higher level purpose* rather than the "not my WG 
> charter" reasoning.
>
> If you are running an experiment with this protocol, you need to have 
> specific details enough to determine if this experimental protocol is 
> a success. Otherwise, you will continue to have the OLSR vs. AODV-v2, 
> or vague review on RFC5444 additions to the protocol.  This ends up in 
> emotional debate without substantial experimental results to back it 
> up.  Emotional debates recycle. My suggestions aim at providing enough 
> detail to settle these arguments with experimental results.
>
Exactly.
As example, see Status of This Document and Document Status in RFC 7499 
and 7360

Regards, Benoit
>
>  MANET has lots of exciting work to do in the advent of 5G, 802.11ac, 
> and other  mobile network changes.
>
> As you noted, the reviews on operational portion of this work points 
> out how these experimental results are critical to designing an 
> appropriate operational interface.
>
> So.. bottom line... Staying "not in my charter" and asking to pass 
> this document on without settling on a mechanism to fix it - is a 
> mistake.  Decide how the MANET WG is going to determine this is a 
> success and put together a plan.  BMWG usually does device 
> compliance.  If you want aid on a network-compliance test case, they 
> will work with  and review the document. However, the real expertise 
> is still in MANET.
>
> ON IANA ... That's covered by Barry's discuss.
>
> Sue
>
> PS – If you are tired of the document and debate, as a WG chair, I 
> understand.  However, the value of the reviews is a fresh set of eyes 
> and emotions.
>
> -----Original Message-----
> From: Alvaro Retana (aretana) [mailto:aretana@cisco.com]
> Sent: Thursday, June 25, 2015 11:39 AM
> To: Benoit Claise (bclaise); Susan Hares
> Cc: draft-ietf-manet-olsrv2-multitopology@ietf.org; manet@ietf.org; 
> manet-chairs@ietf.org; The IESG; ops-dir@ietf.org
> Subject: Re: Benoit Claise's Discuss on 
> draft-ietf-manet-olsrv2-multitopology-05: (with DISCUSS)
>
> Benoit/Sue:
>
> Any comments?
>
> Thanks!
>
> Alvaro.
>
> On 6/15/15, 4:02 PM, "Alvaro Retana (aretana)" <aretana@cisco.com 
> <mailto:aretana@cisco.com>> wrote:
>
> >On 5/28/15, 9:26 AM, "Benoit Claise (bclaise)" <bclaise@cisco.com 
> <mailto:bclaise@cisco.com>> wrote:
>
> >
>
> >[Because the authors didn¹t have time to review the ops-dir comments
>
> >before the telechat, or before they became a DISCUSS, I¹m explicitly
>
> >cc¹ing it here as well as Sue.]
>
> >
>
> >Benoit:
>
> >
>
> >Hi!
>
> >
>
> >Sorry it took me a while to get to this..
>
> >
>
> >>----------------------------------------------------------------------
>
> >>DISCUSS:
>
> >>----------------------------------------------------------------------
>
> >>
>
> >>The multiple points, brought up by Sue part of her OPS-DIR review,
>
> >>deserve a DISCUSS. Let's engage in the discussion.
>
> >. . .
>
> >
>
> >
>
> >>Summary of Comments:
>
> >>
>
> >>My comments have 6 major issues, and a set of editorial changes.  Five
>
> >>of my major points have to do with adding more details to the draft to
>
> >>judge the experiment valuable. One way to resolve these comments is
>
> >>to create document providing details on the test that will be run.  A
>
> >>second way to resolve these comments on experiment is to provide
>
> >>additional high-level guidance in this document.
>
> >
>
> >Note that section 1.1 (Motivation and Experimentation) already provides
>
> >high-level guidance of the type of information to be evaluated.
>
> >
>
> >   While general experiences with this protocol extension, including
>
> >   interoperability of implementations, are encouraged, specific
>
> >   information would be particularly appreciated on the following areas:
>
> >
>
> >   o  Operation in a network that contains both routers implementing
>
> >      this extension, and routers implementing only [RFC7181], in
>
> >      particular are there any unexpected interactions that can break
>
> >      the network?
>
> >
>
> >   o  Operation in realistic deployments, and details thereof, including
>
> >      in particular indicating how many concurrent topologies were
>
> >      required.
>
> >
>
> >   A broader issue that applies to unextended [RFC7181] as well as this
>
> >   extension (and potentially to other MANET routing protocols) is which
>
> >   link metric types are useful in a MANET, and how to establish the
>
> >   metrics to associate with a given link.  While this issue is not only
>
> >   related to this extension, the ability for an OLSRv2 network to
>
> >   maintain different concurrent link metrics may facilitate both
>
> >   experiments with different link metric types, ways to measure them,
>
> >   etc. and may also allow experimentation with link metric types that
>
> >   are not compromises to handle multiple traffic types.
>
> >
>
> >
>
> >Clearly the focus is on ³running code²: operation in real deployments
>
> >and mixed environments.
>
> >
>
> >
>
> >The suggestions for tests made in the Ops-Dir review are great!
>
> >However, I don¹t believe that such detail belongs in this document,
>
> >where the main purpose is to document the extension.  In fact, I think
>
> >the suggestions belong more as part of a test plan (used by
>
> >implementors ‹ similar maybe to the work done in bmwg, for example),
>
> >which seems to be in line with the
>
> >comments: (Sue wrote) ³The recommended tests in major concern 1-4 could
>
> >be created in a separate draft.²
>
> >
>
> >It is not in the manet WGs charter to produce test plans.  In order to
>
> >not loose Sue¹s valuable input, I suggest we keep them in the WG¹s wiki
>
> >‹ which will allow for other test cases to be added, details included,
>
> >results reflected, etc.
>
> >
>
> >
>
> >. . .
>
> >>Major concern 5:  Experiments should drive to create operational
>
> >>guidelines for deployment, configuration knobs, and use cases (ADOV-2,
>
> >>OLSR-v2, MT-OLSR-v2)
>
> >
>
> >Completely agree!  Implementation and operational experience (not just
>
> >experiments) should in fact result in that type of guidelines.
>
> >
>
> >Again, the details are not within the scope of this document..and
>
> >guidance is already given in 1.1 about the use in real networks.
>
> >
>
> >Note that this comment mentions not just the extensions proposed, but
>
> >the base protocol and even AODVv2. All these guidelines are important
>
> >from an operations point of view, but shouldn¹t be tied to this document.
>
> >
>
> >Aside: the MANET WG is in process of rechartering.  This type of
>
> >suggestions should be presented for discussion.
>
> >
>
> >
>
> >. . .
>
> >>Major 6: The IANA section does not answer all the IANA questions.
>
> >>
>
> >>It has most of the information, but I think it is not up to the latest
>
> >>IANA format and information. Barry Leiba and others have noted that the
>
> >>RFC 7181 and RFC7188 do not match this IANA section.  Rather than
>
> >>repeat these comments, I will simple state the data needs to be
>
> >>consistent and the format match IANA¹s comments.
>
> >
>
> >Barry¹s comment has been solved and will be reflected in an update.
>
> >
>
> >The authors have been talking to IANA directly.  We are now waiting for
>
> >review from the MANET registry experts (which is the one open item with
>
> >IANA).
>
> >
>
> >Thanks!
>
> >
>
> >Alvaro.
>
> >
>