Re: [coman] constrained management: best practice for "features"
Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de> Sun, 26 October 2014 19:40 UTC
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Date: Sun, 26 Oct 2014 20:40:09 +0100
From: Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>
To: Thomas Watteyne <watteyne@eecs.berkeley.edu>
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Subject: Re: [coman] constrained management: best practice for "features"
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On Sun, Oct 26, 2014 at 12:07:33PM -0700, Thomas Watteyne wrote: > *[sending to both 6TiSCH and COMAN MLs]* > > While discussion management of 6TiSCH devices, Jonathan brought up an > important question [1] while reviewing draft-ietf-6tisch-6top-interface [2]: > > * Are all things in the YANG model required? For example, must one support > > reading the READ.timesource for minTimeCorrection? > > > > I'd like to poll the lists for best practice in (constrained) management > and optional portions of data model: > > 1. are "features" [3] the correct mechanism for marking portions on a > data model optional? Yes > 2. how widely used are features; are they considered good practice? $ grep -h -i feature.*\{ ietf-*yang | sort -u | wc -l 38 They are apparently not considered bad practice. However, making single leafs features may be considered bad style. Usually features are used to mark logical sub-components that may not be always implemented as optional. > 3. is GETing the resource /restconf/<module_name>/feature in RESTconf > the default way for discovering features? I think the data model in draft-ietf-netconf-restconf-03.txt section 9 is a bit more complex (you seem to be looking at an old specification). > 4. would a HTTP/CoAP status code (e.g. "501 Not Implemented") be a > viable alternative for feature discovery? Unclear. Which request would trigger this? > 5. In general, what are the opinions from the 6TiSCH WG about using > features? Can't answer this one. /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/>
- [coman] constrained management: best practice for… Thomas Watteyne
- Re: [coman] constrained management: best practice… Juergen Schoenwaelder
- Re: [coman] constrained management: best practice… Thomas Watteyne
- Re: [coman] constrained management: best practice… Juergen Schoenwaelder