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Re: [i2rs] Ephemeral State Requirements discussion

"Susan Hares" <shares@ndzh.com> Mon, 06 June 2016 19:20 UTC

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From: Susan Hares <shares@ndzh.com>
To: 'Juergen Schoenwaelder' <j.schoenwaelder@jacobs-university.de>, "'Fedyk, Don'" <don.fedyk@hpe.com>
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Date: Mon, 06 Jun 2016 15:12:23 -0400
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Cc: 'Jeffrey Haas' <jhaas@pfrc.org>, i2rs@ietf.org, "'Joel M. Halpern'" <jmh@joelhalpern.com>
Subject: Re: [i2rs] Ephemeral State Requirements discussion
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Juergen: 

I agree you if you overwrite data, the original config data and the I2RS
values must be kept some-place.  However, this is an implementation matter
in my mind.  Why do you tag it to a different data store. 

Also, is the augmentation of any variable considered a separate data store?


Sue 

-----Original Message-----
From: i2rs [mailto:i2rs-bounces@ietf.org] On Behalf Of Juergen Schoenwaelder
Sent: Monday, June 06, 2016 3:03 PM
To: Fedyk, Don
Cc: 'Jeffrey Haas'; i2rs@ietf.org; 'Joel M. Halpern'; Susan Hares
Subject: Re: [i2rs] Ephemeral State Requirements discussion

On Mon, Jun 06, 2016 at 06:51:46PM +0000, Fedyk, Don wrote:

> Does this imply for a minor tweak of some operational datastore 
> (temporary link metric change or something similar) , I2RS ephemeral 
> has to have its own complete datastore?

Yes. Because this is where the information that something got overwritten is
stored. And in this case, the datastore would essentially consist of a
single key/value pair. The phrase 'complete datastore' may indicate
something complex while it can actually be lightweight. In any case,
somewhere information must be kept that something was overwritten - we call
this something a datastore.

/js

-- 
Juergen Schoenwaelder           Jacobs University Bremen gGmbH
Phone: +49 421 200 3587         Campus Ring 1 | 28759 Bremen | Germany
Fax:   +49 421 200 3103         <http://www.jacobs-university.de/>

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