Re: [GROW] Genart last call review of draft-ietf-grow-bgp-gshut-11

Job Snijders <job@ntt.net> Tue, 10 October 2017 15:17 UTC

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Date: Tue, 10 Oct 2017 17:11:42 +0200
From: Job Snijders <job@ntt.net>
To: Jay Borkenhagen <jayb@braeburn.org>
Cc: David Farmer <farmer@umn.edu>, bruno.decraene@orange.com, "draft-ietf-grow-bgp-gshut.all@ietf.org" <draft-ietf-grow-bgp-gshut.all@ietf.org>, "ietf@ietf.org" <ietf@ietf.org>, "gen-art@ietf.org" <gen-art@ietf.org>, Matthew Miller <linuxwolf+ietf@outer-planes.net>, "grow@ietf.org" <grow@ietf.org>
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Subject: Re: [GROW] Genart last call review of draft-ietf-grow-bgp-gshut-11
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On Tue, Oct 10, 2017 at 10:56:56AM -0400, Jay Borkenhagen wrote:
> David Farmer writes:
>  > I would prefer a normative RECOMMENDED, the rest of the sentence in
>  > RFC2119, just means you should explain the constraints on the alternatives.
>  > How about something like this;
>  > 
>  > "The LOCAL_PREF value SHOULD be lower than any of the alternative
>  > paths.  A LOCAL_PREF
>  > value of Zero is RECOMMENDED, however any LOCAL_PREF value lower than all
>  > other LOCAL_PREF values used within an AS is an acceptable alternative.
>  > The LOCAL_PREF value used, Zero or otherwise, SHOULD NOT also
>  > have another use or meaning within the AS."
>  > 
> 
> 
> The LOCAL_PREF choice here is a simple thing -- don't make it more
> complicated than it needs to be.
> 
> Job's suggested text says all that's necessary:
> 
>     "The LOCAL_PREF value SHOULD be lower than any of the alternative
>     paths.  Zero being the lowest value, it MAY be used whichever
>     LOCAL_PREF values are used by the AS."

The above comes from Bruno's hand, I actually proposed the following:

    "The LOCAL_PREF value SHOULD be lower than any of the
    alternative paths. It is RECOMMEND to use 0, the lowest LOCAL_PREF
    value."

Kind regards,

Job