Re: [6lo] TSV ART early review of draft-ietf-6lo-dect-ule

Joe Touch <touch@isi.edu> Mon, 26 September 2016 21:35 UTC

To: draft-ietf-6lo-dect-ule.all@ietf.org, 6lo@ietf.org
References: <6df03900-789c-1c93-977a-93f0a9d663b3@isi.edu>
From: Joe Touch <touch@isi.edu>
Message-ID: <df3a455b-d60e-fcb7-f7c4-6497b052cd53@isi.edu>
Date: Mon, 26 Sep 2016 14:35:19 -0700
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Cc: "tsv-art@ietf.org" <tsv-art@ietf.org>
Subject: Re: [6lo] TSV ART early review of draft-ietf-6lo-dect-ule
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CC'ing tsv-art...


On 9/26/2016 2:34 PM, Joe Touch wrote:
>
> Hi, all,
>
> I've reviewed this document as part of the Transport Area Review
> Team's (TSVART) ongoing effort to review key IETF documents. These
> comments were written primarily for the transport area directors, but
> are copied to the document's authors for their information and to
> allow them to address any issues raised. When done at the time of IETF
> Last Call, the authors should consider this review together with any
> other last-call comments they receive. Please always CC
> tsv-art@ietf.org <mailto:tsv-art@ietf.org> if you reply to or forward
> this review.
>
> Please resolve these comments along with any other Last Call comments
> you may receive. Please wait for direction from your document shepherd
> or AD before posting a new version of the draft.
>
> Document: draft-ietf-6lo-dect-ule 
> Transmission of IPv6 Packets over DECT Ultra Low Energy
> Reviewer: J. Touch
> Review Date: Sept 26, 2016
> IETF Last Call Date: TBD
>
> Summary: The document impacts transport protocols only indirectly
> through its need to support the minimum required IPv6 MTU, but is
> imprecise about the corresponding details of those requirements.
>
> Major issues: There are no major TSV issues in this document.
>
> Minor issues: The following modification should be considered for
> increased clarity:
>
> Sec 2.4 indicates that the default MTU for DECT UL is 500 octets and
> does note that:
>
>    ...In order to
>    support complete IP packets, the DLC layer of DECT ULE SHALL per this
>    specification be configured with a MTU size that fits the
>    requirements from IPv6 data packets, hence [RFC4944 <https://tools.ietf.org/html/rfc4944>] fragmentation/
>    reassembly is not required.
>
> It would be useful to update this text to be more clear about this
> referring to IPv6 only (as per the title of the doc), to indicate the
> minimum MTU, and to explain the reference to RFC4944:
>
>     ...In order to support IPv6, the DLC layer of DECT ULE MUST be
>     configured with a MTU of at least 1280B to avoid the need for
>     an RFC4944-style shim layer for additional support for larger
>     payload fragmentation/reassembly [RFC4944]."
>
> ---
>

Re: [6lo] TSV ART early review of draft-ietf-6lo-… Joe Touch
[6lo] TSV ART early review of draft-ietf-6lo-dect… Joe Touch