Skip to main content

Updated YANG Module Revision Handling

Document Type Expired Internet-Draft (netmod WG)
Authors Robert Wilton , Reshad Rahman , Balázs Lengyel , Joe Clarke , Jason Sterne
Last updated 2022-05-12 (Latest revision 2021-11-08)
Replaces draft-verdt-netmod-yang-module-versioning
Stream Internet Engineering Task Force (IETF)
Intended RFC status Proposed Standard
Expired & archived
plain text html xml htmlized pdfized bibtex
Yang Validation 7 errors, 0 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 Waiting for WG Chair Go-Ahead
Revised I-D Needed - Issue raised by WG
Document shepherd Lou Berger
IESG IESG state Expired
Consensus boilerplate Yes
Telechat date (None)
Responsible AD (None)
Send notices to
This Internet-Draft is no longer active.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 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 and submodules. This document updates RFC 7950, RFC 6020, RFC 8407 and RFC 8525.


Robert Wilton
Reshad Rahman
Balázs Lengyel
Joe Clarke
Jason Sterne

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