Re: [Roll] [Iot-directorate] Iotdir telechat review of draft-ietf-roll-aodv-rpl-10

"Eric Vyncke (evyncke)" <evyncke@cisco.com> Thu, 15 April 2021 12:15 UTC

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From: "Eric Vyncke (evyncke)" <evyncke@cisco.com>
To: Peter Van der Stok <consultancy@vanderstok.org>, "iot-directorate@ietf.org" <iot-directorate@ietf.org>
CC: "last-call@ietf.org" <last-call@ietf.org>, "roll@ietf.org" <roll@ietf.org>, "draft-ietf-roll-aodv-rpl.all@ietf.org" <draft-ietf-roll-aodv-rpl.all@ietf.org>
Thread-Topic: [Iot-directorate] Iotdir telechat review of draft-ietf-roll-aodv-rpl-10
Thread-Index: AQHXMd2uyDEwChKLc0u6iLwzVfFHpaq1n8CA
Date: Thu, 15 Apr 2021 12:15:10 +0000
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References: <161848055597.18527.2186863564067252978@ietfa.amsl.com>
In-Reply-To: <161848055597.18527.2186863564067252978@ietfa.amsl.com>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/roll/A2TQrMfiQU35ixsnPoyahI3jwh4>
Subject: Re: [Roll] [Iot-directorate] Iotdir telechat review of draft-ietf-roll-aodv-rpl-10
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Thank you Peter for your review, I really appreciate it and will use it when balloting on the document.

Regards

-éric

-----Original Message-----
From: Iot-directorate <iot-directorate-bounces@ietf.org> on behalf of Peter Van der Stok via Datatracker <noreply@ietf.org>
Reply-To: Peter Van der Stok <consultancy@vanderstok.org>
Date: Thursday, 15 April 2021 at 11:57
To: "iot-directorate@ietf.org" <iot-directorate@ietf.org>
Cc: "last-call@ietf.org" <last-call@ietf.org>rg>, "roll@ietf.org" <roll@ietf.org>rg>, "draft-ietf-roll-aodv-rpl.all@ietf.org" <draft-ietf-roll-aodv-rpl.all@ietf.org>
Subject: [Iot-directorate] Iotdir telechat review of draft-ietf-roll-aodv-rpl-10

    Reviewer: Peter Van der Stok
    Review result: Ready with Nits

    Review of draft-ietf-roll-aodv-rpl-10
    Peter van der stok, 15 April 2021

    In general, the document is well written. By looking regularly into RFC 6550, I
    am rather sure that I could implement the protocol. The question remains how
    this draft relates to RFC 6997. When the WG decides that this draft replaces
    RFC 6997, then it would be good to copy some text from 6997 to this draft,
    because RFC 6997 is more explicit about the use of RPL parameters as specified
    in RFC 6550 and presents more explicit motivation.

    Many thanks for this document

    peter
    _________________________________________________________
    Some suggestions for the text follow here:
    Page 14, lines 3 and 4;
    OLD: ART Options and within
    New: ART Options. Within
    Page 14, line 9
    distinguished -> generated
    page 14 section 6.2.1
    OLD: does not belong to the RREQ-Instance
    NEW: has not joint the RREQ-Instance
    Joining is used in Step 1, 2nd paragraph.
    Question: what is the "best previous RREQ"?
    Page 14, Step 1, 2nd paragraph
    OLD: router's Rank would not exceed
    NEW: router's Rank does not exceed
    Page 15 end of Step 3;
    Question: What is a "stale sequence number"?
    Page 15, section 6.2.2
    OLD:
    If the OrigNode tries to reach multiple TargNodes in a single RREQ-Instance,
    one of the TargNodes can be an intermediate router to the others, therefore it
    MUST continue sending RREQ-DIO to reach other targets.

    NEW:
    If the OrigNode tries to reach multiple TargNodes in a single RREQ-Instance, it
    MUST continue sending RREQ-DIO to reach other Targets because one of the
    TargNodes can be an intermediate router to the others.

    End Page 15
    OLD: but have different
    NEW: with different

    OLD the intersection of these list
    NEW the intersection all received lists

    Page 16 line 8
    OLD associated with the
    NEW for a given

    Page 17: the terms occupied RPLInstanceID, and second RPLInstancID are
    difficult to parse. Maye be use received RPLInstanceID and shifted
    RPLInstanceID? Further on you use original RPLInstanceID, is that a third one?

    Question: what does "shifted into another integer" mean?
    Question: who or what chooses the shift value, when is it set and into which
    RREP-DIO field is the shifted value set?

    Page 18 Step 2; Are multiple addresses possible in the ART option. I just
    understood there is only one per RPLInstanceID (shifted or not).

    Page 18 Step 3, As above
    Stale sequence number?



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