1. Draft-ietf-supa-generic-policy-data-model-02
Joel Halpern

2. Draft state Revision submitted 13-October-2016
All YANG passes available tests
After the buggy tests were repaired
Has a YANG data tree
Covers all of the Generic Policy from the Information model
Reflects the generic information model
With some refinements for YANG specifics

3. Structural overview - reminder
IM classes are represented as YANG groupings
Inheritance is represented using
“using” clauses to use the parent grouping in the child
Class identities “based” on the parent identity.
With a dummy root because YANG “identityref” can not have a value equal to the base, the value must be derived from the base
Associations are represented as instance-identifiers
With “must” clauses using the identity that the target must have or be derived from
With association classes represented as their own groupings for the association properties
Classes which can be concrete have their own container, with a list, with elements that “use” the class grouping

4. Pending actions We will add the ECA models We will add examples
Using the same transforms we used for the Generic Policy
We will add examples
Probably a subset of the examples we will add to the IM
Do we need to add more descriptive introductory material in section 5.
Some drafts describe the YANG objects carefully before the YANG
This draft, we are currently reliant on the extensive IM descriptions and the description clauses in the YANG

5. Open question - enumerations
The model includes many enumerations
These are used for classic listings of “possible values for this thing”
YANG enumerations are not extensible in submodels
We could use a base identity for the field
with a derived identity for each currently defined meaning
Thus allowing new values to be added in models which build on this
Should we do so?