Re: Adam Roach's No Objection on draft-ietf-rtgwg-uloop-delay-07: (with COMMENT)

Adam Roach <adam@nostrum.com> Wed, 11 October 2017 15:29 UTC

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Subject: Re: Adam Roach's No Objection on draft-ietf-rtgwg-uloop-delay-07: (with COMMENT)
To: stephane.litkowski@orange.com, The IESG <iesg@ietf.org>
Cc: "chrisbowers.ietf@gmail.com" <chrisbowers.ietf@gmail.com>, "rtgwg-chairs@ietf.org" <rtgwg-chairs@ietf.org>, "draft-ietf-rtgwg-uloop-delay@ietf.org" <draft-ietf-rtgwg-uloop-delay@ietf.org>, "rtgwg@ietf.org" <rtgwg@ietf.org>
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From: Adam Roach <adam@nostrum.com>
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Date: Wed, 11 Oct 2017 10:29:34 -0500
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On 10/11/17 4:18 AM, stephane.litkowski@orange.com wrote:
> Hi Adam,
>
> Thanks for your review.
> Some comments inline
>

Your proposals all look good to me. One additional comment, below.

>
> Section 4 begins:
>
>     This document defines a two-step convergence initiated by the router
>     detecting a failure and advertising the topological changes in the
>     IGP.  This introduces a delay between the convergence of the local
>     router and the network wide convergence.
>
> This reads backwards to me. With this technique, the network converges first, followed by an introduced delay, followed by router convergence. Right?
> [SLI] The network converges first, then the local router thanks to the introduced local delay.

Yes, so I would suggest rephrasing the above as:

    This document defines a two-step convergence initiated by the router
    detecting a failure and advertising the topological changes in the
    IGP.  This introduces a delay between network-wide convergence and
    the convergence of the local router.


/a