Re: [Gen-art] Review of draft-ietf-ccamp-flexible-grid-ospf-ext-07

Daniele Ceccarelli <daniele.ceccarelli@ericsson.com> Wed, 08 February 2017 10:15 UTC

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From: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>
To: Pete Resnick <presnick@qti.qualcomm.com>
Thread-Topic: [Gen-art] Review of draft-ietf-ccamp-flexible-grid-ospf-ext-07
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Date: Wed, 08 Feb 2017 10:14:48 +0000
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Subject: Re: [Gen-art] Review of draft-ietf-ccamp-flexible-grid-ospf-ext-07
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Hi Pete,

This is an “inheritance” from GMPLS, where supporting a single priority equals not supporting priorities. If you don’t want to support priorities you don’t want your traffic to be preempted…hence priority 0.


>Well, it doesn't say that shouldn't be done, but it probably doesn't need to say anything about local configurations.
For me it’s ok not to say anything on that.

Thanks
Daniele

From: Pete Resnick [mailto:presnick@qti.qualcomm.com]
Sent: martedì 7 febbraio 2017 18:05
To: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>
Cc: Jari Arkko <jari.arkko@piuha.net>; gen-art@ietf.org; draft-ietf-ccamp-flexible-grid-ospf-ext.all@ietf.org; ccamp@ietf.org; ietf@ietf.org
Subject: Re: [Gen-art] Review of draft-ietf-ccamp-flexible-grid-ospf-ext-07


Hi Daniele,

Thanks for addressing everything. There's only one issue left in section 4.1.1 on Priority, below. I've trimmed out all the rest.

On 7 Feb 2017, at 3:36, Daniele Ceccarelli wrote:

I get that part ("At least one priority level MUST be advertised"). It's the end I don't understand: "that, unless overridden by local policy, SHALL be at priority level 0." What does that mean?

[DC] It means that if only one priority is supported it has to be priority 0.

So, let me see if I have this right: It's OK to have 01100000 but not 01000000 or 00100000? If so, why is that?

For any particular administrative purpose it could be possible to set it to a different value, but that shouldn’t be done.

Well, it doesn't say that shouldn't be done, but it probably doesn't need to say anything about local configurations.

pr
--
Pete Resnick http://www.qualcomm.com/~presnick/<http://www.qualcomm.com/%7Epresnick/>
Qualcomm Technologies, Inc. - +1 (858)651-4478