NETMOD WG IETF 104 (Prague)

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Presentation transcript:

NETMOD WG IETF 104 (Prague) YANG Next Analysis NETMOD WG IETF 104 (Prague)

Meetings 3 Virtual Interims in two months: Feb 6 Feb 20 Mar 20 Focus on scoring the YANG Next issues 70 issues entered over the course of 3 years repo created on Mar 11, 2016 This presentation reviews the results of those meetings. Deep dive meeting on Wednesday, Mar 27, 15:00-17:00 in Karlin 3 (seats 60)

Issues: 48 Open (22 Closed, not displayed) 3-D Views Issues: 48 Open (22 Closed, not displayed)

3-D Views Showing Complexity Complexity: Mostly low, with fair amounts medium and unknown Most of the important issues have low complexity. Most of the backwards compatible issues have low complexity

Backwards Compatibility x Importance (Pay attention to the Unknowns) 14 2 1 18 2 1 2 1 1 4 2 Most issues are highly backwards compatible.

Backwards Compatibility x Importance (with Unknowns distributed equally into other values) Effect of Unknowns is approximated...

Backwards Compatibility x Importance (with Complexity factored in as well) Most time spent on the desirable green quadrant.

Where to Focus? (This is what Wednesday's meeting is about) Focus on Importance Focus on Backwards Compatibility

Comments?

The 8 Issues Behind a Possible 2.0 Low Unknown High Context-independent encoding of instance-identifiers and identityrefs Introduce critical extensions Refine YANG versioning Medium Consider removing support for sub modules from YANG Allow some references to from config-true to config-false Add an “inactive” metadata annotation Unknown N/A Introduce critical annotations Clarify 'deviation' substatements to match ABNF grammar

The 8 Issues with Importance == Low (Unlikely to be supported under any circumstance) Add if-feature on "must" statement Introduce XPath function datastore() Create a way for a statement to tie-in with augment/deviation add 'conformance-type' leaf to 'import' statement Restrict usage to a subset of XPATH Restrict regex to a subset of XML regex specification Replace 'encoding' with 'representation'? Default to namespace urn:yang:<module-name> ?