Re: [alto] Spencer Dawkins' No Objection on draft-ietf-alto-cost-calendar-09: (with COMMENT)

Spencer Dawkins at IETF <spencerdawkins.ietf@gmail.com> Wed, 16 January 2019 17:48 UTC

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From: Spencer Dawkins at IETF <spencerdawkins.ietf@gmail.com>
Date: Wed, 16 Jan 2019 11:48:33 -0600
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To: "Randriamasy, Sabine (Nokia - FR/Paris-Saclay)" <sabine.randriamasy@nokia-bell-labs.com>
Cc: The IESG <iesg@ietf.org>, "draft-ietf-alto-cost-calendar@ietf.org" <draft-ietf-alto-cost-calendar@ietf.org>, "Gurbani, Vijay (Nokia - US/Naperville)" <vijay.gurbani@nokia.onmicrosoft.com>, "alto-chairs@ietf.org" <alto-chairs@ietf.org>, "alto@ietf.org" <alto@ietf.org>
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Subject: Re: [alto] Spencer Dawkins' No Objection on draft-ietf-alto-cost-calendar-09: (with COMMENT)
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Hi, Sabine,

On Wed, Jan 16, 2019 at 7:40 AM Randriamasy, Sabine (Nokia -
FR/Paris-Saclay) <sabine.randriamasy@nokia-bell-labs.com>; wrote:

> Hi Spencer,
>
> Please see answer to your question inline,
> Sabine
>
> -----Original Message-----
> From: Spencer Dawkins <spencerdawkins.ietf@gmail.com>;
> Sent: Tuesday, December 04, 2018 7:48 PM
> To: The IESG <iesg@ietf.org>;
> Cc: draft-ietf-alto-cost-calendar@ietf.org; Gurbani, Vijay (Nokia -
> US/Naperville) <vijay.gurbani@nokia.onmicrosoft.com>;; alto-chairs@ietf.org;
> Gurbani, Vijay (Nokia - US/Naperville) <
> vijay.gurbani@nokia.onmicrosoft.com>;; alto@ietf.org
> Subject: Spencer Dawkins' No Objection on
> draft-ietf-alto-cost-calendar-09: (with COMMENT)
>
> Spencer Dawkins has entered the following ballot position for
> draft-ietf-alto-cost-calendar-09: No Objection
>
> When responding, please keep the subject line intact and reply to all
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>
> Please refer to https://www.ietf.org/iesg/statement/discuss-criteria.html
> for more information about IESG DISCUSS and COMMENT positions.
>
>
> The document, along with other ballot positions, can be found here:
> https://datatracker.ietf.org/doc/draft-ietf-alto-cost-calendar/
>
>
>
> ----------------------------------------------------------------------
> COMMENT:
> ----------------------------------------------------------------------
>
> Thanks for specifying this useful capability.
>
> I did have one question - I didn't see anywhere in the document that
>
>    An ALTO Cost calendar provided by the ALTO Server provides 2
>    information items:
>
>    o  an array of values for a given metric, where each value
>       corresponds to a time interval, where the value array can
>       sometimes be a cyclic pattern that repeats a certain number of
>       times.
>
> allowed a cyclic pattern to repeat indefinitely. Just for my background,
> that's an intentional omission, right?
> [[SR]] yes, the omission is intentional.
> This can be addressed in  section 4.1.2, by writing that:
>  "Attribute "repeated" may take a very high value if a Calendar represents
> a cyclic value pattern that the Server considers valid for a long period
> and hence will only update once this period has elapsed or if an unexpected
> event occurs on the network. In the latter case, the client will be
> notified if it uses the "ALTO Incremental Updates Using Server-Sent Events"
> service. See also, section 7. Operational Considerations".
>
> Thanks for the explanation!

Spencer