Updated YANG Module Revision Handling

Document Type Expired Internet-Draft (netmod WG)
Authors Robert Wilton  , Reshad Rahman  , Balázs Lengyel  , Joe Clarke  , Jason Sterne  , Benoît Claise  , Kevin D'Souza 
Last updated 2021-01-11 (latest revision 2020-07-10)
Replaces draft-verdt-netmod-yang-module-versioning
Stream IETF
Intended RFC status (None)
Expired & archived
pdf htmlized (tools) htmlized bibtex
Yang Validation 0 errors, 1 warnings.
Additional Resources
- Yang catalog entry for ietf-yang-library-revisions@2020-07-06.yang
- Yang catalog entry for ietf-yang-revisions@2020-07-06.yang
- Yang impact analysis for draft-ietf-netmod-yang-module-versioning
- Mailing list discussion
Stream WG state WG Document
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IESG IESG state Expired
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document specifies a new YANG module update procedure that can document when non-backwards-compatible changes have occurred during the evolution of a YANG module. It extends the YANG import statement with an earliest revision filter to better represent inter-module dependencies. It provides help and guidelines for managing the lifecycle of YANG modules and individual schema nodes. It provides a mechanism, via the revision-label YANG extension, to specify a revision identifier for YANG modules. This document updates RFC 7950, RFC 8407 and RFC 8525.


Robert Wilton (rwilton@cisco.com)
Reshad Rahman (rrahman@cisco.com)
Balázs Lengyel (balazs.lengyel@ericsson.com)
Joe Clarke (jclarke@cisco.com)
Jason Sterne (jason.sterne@nokia.com)
Benoît Claise (bclaise@cisco.com)
Kevin D'Souza (kd6913@att.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)