Re: [mpls] [Tsv-art] Tsvart last call review of draft-ietf-mpls-sr-over-ip-03

Spencer Dawkins at IETF <spencerdawkins.ietf@gmail.com> Tue, 12 March 2019 20:52 UTC

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From: Spencer Dawkins at IETF <spencerdawkins.ietf@gmail.com>
Date: Tue, 12 Mar 2019 15:52:19 -0500
Message-ID: <CAKKJt-foLW=U2wN73BFYSs+tj2asEL7jGirOOzGMe=chzcsKJw@mail.gmail.com>
To: Adrian Farrel <adrian@olddog.co.uk>
Cc: Datatracker on behalf of Martin Stiemerling <ietf-secretariat-reply@ietf.org>, tsv-art@ietf.org, mpls@ietf.org, IETF list <ietf@ietf.org>, draft-ietf-mpls-sr-over-ip.all@ietf.org
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Subject: Re: [mpls] [Tsv-art] Tsvart last call review of draft-ietf-mpls-sr-over-ip-03
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Hi, Adrian,

On Tue, Mar 12, 2019 at 3:04 PM Adrian Farrel <adrian@olddog.co.uk>; wrote:

> Thanks Spencer.
>
>
>
> My initial reaction was to be a bit snippy about this, but I’ll try to
> behave :-)
>
>
>
> The intention is that MPLS-SR-over-IP utilises MPLS-over-UDP as documented
> in RFC 7510.
>
>
>
> I think (and hope) that section 5 of RFC 7510 is an integral part of RFC
> 7510, and so is automatically part of any further specification that uses
> the mechanisms defined in RFC 7510.
>
>
>
> In my opinion, to would be wrong to single out one section of RFC 7510 for
> special mention in this document since to do so might be taken to apply
> that other sections are not equally important.
>

That's reasonable, and it's very likely that I missed what Martin was
thinking. Thanks for the quick response.

Spencer, who appreciates behaving since it's his last telechat ;-)

>
>
> Cheers,
>
> Adrian
>
>
>
> *From:* Spencer Dawkins at IETF <spencerdawkins.ietf@gmail.com>;
> *Sent:* 12 March 2019 19:42
> *To:* Adrian Farrel <adrian@olddog.co.uk>;
> *Cc:* Datatracker on behalf of Martin Stiemerling <
> ietf-secretariat-reply@ietf.org>;; tsv-art@ietf.org; mpls@ietf.org; IETF
> list <ietf@ietf.org>;; draft-ietf-mpls-sr-over-ip.all@ietf.org
> *Subject:* Re: [Tsv-art] Tsvart last call review of
> draft-ietf-mpls-sr-over-ip-03
>
>
>
> Hi, Adrian,
>
>
>
> On Tue, Mar 5, 2019 at 3:35 PM Adrian Farrel <adrian@olddog.co.uk>; wrote:
>
> Hi Martin,
>
> Good to hear from you.
>
> > I have only one request: From a Transport Area perspective,
> > it would be good to emphasize RFC 7510 and its details about
> > MPLS over UDP.
>
> Happy to accommodate this request.
>
> But what do you have in mind?
>
> There are references to 7510, in the Introduction and in the first two use
> cases in Section 2.
> Then, the packet forwarding procedures in Section 3.2 begin with a
> reference to 7510 as well.
> And there a couple more references in the document.
>
> Thanks,
> Adrian
>
>
>
> I haven't seen a response back from Martin, and this doc is on the agenda
> in a couple of days, so I'll try to read Martin's mind, and you can both
> tell me what I'm getting wrong. So can everyone else, of course ...
>
>
>
> The character string "7510" does appear in a bunch of places in this
> draft, but what I'm not seeing is a statement of whether the congestion
> control considerations in Section 5 of RFC 7510 do, or do not, apply to
> MPLS-SR over UDP, as with MPLS over UDP. That might be obvious to MPLS-SR
> types, and it might be especially obvious to you, because you were author
> for this draft and responsible AD for RFC 7510 until after it entered the
> RFC Editor queue, but I wonder if it might be useful to Those Less Skilled
> In The Art.
>
> I'll ballot No Objection/still discussing TSV-ART review with author, and
> you can reply here, or there, as seems appropriate.
>
> Make good choices, of course ;-)
>
>
>
> Spencer
>