[I2rs-proto-dt] YANG ephemeral tagging

Andy Bierman <andy@yumaworks.com> Mon, 12 October 2015 22:31 UTC

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Date: Mon, 12 Oct 2015 15:31:02 -0700
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From: Andy Bierman <andy@yumaworks.com>
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Subject: [I2rs-proto-dt] YANG ephemeral tagging
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Hi,

Some questions for next time...

Q1) what YANG ephemeral meta-data is needed?

   1) ephemeral-only:
       Special ephemeral-only YANG data nodes.
       NETCONF will not ignore config=true, so how to keep
       this data out of running datastore?

   2) ephemeral-also:
       config=true data that client can override in ephemeral datastore

    3) ephemeral-not-allowed
      e.g., what if I had a config leaf to enable the ephemeral datastore
      itself?  this MUST NOT be editable in ephemeral datastore


 Q2) what are the defaults? (no meta-data present)

 Q3) scope of tagging statement
    - module
    - subtree
  - how would these 2 modes interact?
  - perhaps just subtree is needed for now?


 Q4) YANG extensions vs YANG statements
   - after determining if and what YANG statements are needed,
     can they be implemented as extensions or is a
     new YANG language version needed?


Andy