Huub,


On 2017-05-22 12:14, Huub van Helvoort wrote:
Hello Eric,

Thanks for the advise.
My reply was to acknowledge that we have seen the review. The "address"
was indeed to answer questions or update the draft.

The draft is on the IESG telechat list of May 25. I think we cannot
provide a new draft before that date and/or answer all of Christers
questions.

Even if you can't do the update of the document, it would be good to tell Deborah if you think there are any issues relating to Christer's
comments or if they are possible to address in a straightforward manner.

/Loa

Best regards, Huub.


Sent from my Nexus 6P
On 22 May 2017, at 10:11, Eric Gray <[email protected]
<mailto:[email protected]>> wrote:

    Huub,

    Many (if not most) of Christer's comments are in the form of questions.  
Hence I suggest that - in addressing the comments - you and your co-authors 
should first answer the questions and then determine what changes are actually 
needed.

    I only suggest this as - for at least some of the questions - it might not 
be a good idea to post a new version and ask if Christer's issues are 
addressed, at least not as a first step.

    I do not assume you did not know this, but your ACK message below does not 
seem to include this step in your plan to address Christer's comments...

    --
    Eric
    (Responding as Document Shepherd)

    -----Original Message-----
    From: Gen-art [mailto:[email protected]] On Behalf Of Huub van 
Helvoort
    Sent: den 22 maj 2017 00:32
    To: Christer Holmberg <[email protected]>; [email protected]; 
[email protected]
    Subject: Re: [Gen-art] Gen-ART review of 
draft-ietf-mpls-tp-shared-ring-protection-05.txt

    Hej Christer,

    Thank you very much for reviewing this draft.
    The minor issues and editorial issues you identified will be addressed by 
the authors.

    Best regards, Huub (on behalf of the co-authors).


    -------

        I am the assigned Gen-ART reviewer for this draft. For
        background on
        Gen-ART, please see the FAQ at
        <http://wiki.tools.ietf.org/area/gen/trac/wiki/GenArtfaq>


        Document: draft-ietf-mpls-tp-shared-ring-protection-05.txt
        Reviewer: Christer Holmberg
        Review Date: 17 May 2017
        IETF LC End Date: 12 May 2017
        IETF Telechat Date: N/A

        Summary: The document is well written, but there are a few
        issues I¹d
        like the authors to address.


        Major Issues: None

        Minor Issues:
        -------------

        Section 4.1.3:

        The text says:

        "When an MPLS-TP transport path, such as an LSP, enters the
        ring,в

        The ³such as an LSP² statement is confusing. Could there be
        something
        else than LSP?



        Section 4.4:

        Would it be useful to say that, for a given ring, an
        interconnect node
        acts as an egress node for that ring, meaning that all LSPs
        using the
        interconnect node will use the same tunnel within the ring?



        Section 4.4.2:

        The text says:

        "The service LSPs that traverse the interconnected
        rings use separate
        ring tunnels on each ring, and the LSPs on
        different rings are
        stitched by the interconnection node.²

        It¹s unclear to me what ³separate tunnels² mean. As there are two
        different rings, there will obviously be separate tunnels. Or,
        do you
        mean to say something else?



        Section 5.1:

        The first sentence says:

        "The MSRP protection operation MUST be controlled
        with the help of the
        Ring Protection Switch protocol (RPS).²

        I think it would be good to have a few introduction sentences of
        the
        RPS protocol, before mandating the usage of it.


        The text says:

        "The RPS protocol MUST carry the ring status
        information and RPS
        requests, either automatically initiated or
        externally initiated,
        between the ring nodes.²

        This text is a little confusing. Is this a protocol requirement,
        or a
        protocol usage requirement? Similar to my previous comments, a
        generic
        introduction to the protocol, and the requirements it has to
        fulfil,
        would be useful. In addition, that text should reference to section
        5.3 for the justification of defining a new protocol in the
        first place.



        Editorial Issues:
        -----------------

        Generic:

        In the document you use both ³ring node² and ³ring-node²
        terminology.
        Unless there is a reason for that, please use consistent
        terminology.



        Section 1:

        The text says:

        "As described in [RFC5654], MPLS-TP requirements, section
        2.5.6.1 <http://2.5.6.1>"

        Šand later:

        "described in section 2.5.6.1 <http://2.5.6.1> of [RFC5654]."

        Please use consistent wording.



        Section 3:

        I like the way the section describes how the requirements have
        been met.
        As I assume most of the solutions are described more in detail
        elsewhere in the document, I wonder whether it would be possible
        to add references?

        Something like:

        "For detailed information, see section x.x.x.x."



        Section 4.1:

        The text says:

        "A port can carry multiple ring tunnels, and a ring tunnel can
        carry multiple LSPs."

        I think it would be good to add a picture showing a port carrying
        multiple ring tunnels, carrying multiple LSPs.







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Loa Andersson                        email: [email protected]
Senior MPLS Expert                          [email protected]
Huawei Technologies (consultant)     phone: +46 739 81 21 64

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