Subject: [netmod] [Technical Errata Reported] RFC6020 (3470)

From: RFC Errata System <[email-masked]>
Date: Thu, 24 Jan 2013 04:48:24 -0800 (PST)

The following errata report has been submitted for RFC6020,
"YANG - A Data Modeling Language for the Network Configuration Protocol (NETCONF)".

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You may review the report below and at:
http://www.rfc-editor.org/errata_search.php?rfc=6020&eid=3470

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Type: Technical
Reported by: Ladislav Lhotka <[email-masked]>

Section: 7.16.2

Original Text
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An identity MUST NOT reference itself, neither directly nor indirectly through a chain of other identities.

Corrected Text
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The derivation of identities has the following properties:

o It is irreflexive, which means that an identity is not derived from itself.

o It is transitive, which means that if identity B is derived from A and
  C is derived from B, then C is also derived from A.

Notes
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The desired properties of identity derivation are not clearly stated. The discussion in the NETMOD mailing led to a general agreement that identity derivation is supposed to be irreflexive and transitive. These two properties together also eliminate the possibility of a circular derivation.

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RFC6020 (draft-ietf-netmod-yang-13)
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Title               : YANG - A Data Modeling Language for the Network Configuration Protocol (NETCONF)
Publication Date    : October 2010
Author(s)           : M. Bjorklund, Ed.
Category            : PROPOSED STANDARD
Source              : NETCONF Data Modeling Language
Area                : Operations and Management
Stream              : IETF
Verifying Party     : IESG