Subject: Re: FW: Last Call: draft-ietf-netmod-yang (YANG - A data modeling languagefor NETCONF) to Proposed Standard

From: Graham Klyne <[email-masked]>
Date: Thu, 11 Mar 2010 23:46:59 +0000

Hi,

At 180-ish pages, it's a pretty daunting spec.  At a cursory glance, it mostly
seems to be yet another schema language for XML - I didn't see anything in the
introduction to suggest otherwise:

    This document describes the syntax and semantics of the YANG
    language, how the data model defined in a YANG module is represented
    in XML, and how NETCONF operations are used to manipulate the data.

Sounds to me like a schema language with a little bit of operational semantics
attached for manipulation.

What is it that this specification provides that cannot be expressed with XML
Schema or RelaxNG?  And if it's not very much, wouldn't it make more sense to
frame this as a modest extension of an existing schema language?

Maybe I'm missing something fundamental here:  if so, it would help if the
introduction could explain what that might be.

#g
--

Romascanu, Dan (Dan) wrote:
>  XML and APPS Experts,
> 
> I would like to draw you attention on the IETF Last Call for the YANG
> data modeling language for NETCONF that started yesterday and will last
> for about one month. 
> 
> Your comments and reviews will be appreciated. 
> 
> Thanks and Regards,
> 
> Dan
> 
> 
> -----Original Message-----
> From: [email-masked]
> [mailto:[email-masked]] On Behalf Of The IESG
> Sent: Wednesday, March 10, 2010 9:35 PM
> To: IETF-Announce
> Cc: [email-masked]
> Subject: Last Call: draft-ietf-netmod-yang (YANG - A data modeling
> languagefor NETCONF) to Proposed Standard
> 
> The IESG has received a request from the NETCONF Data Modeling Language
> WG (netmod) to consider the following document:
> 
> - 'YANG - A data modeling language for NETCONF '
>    <draft-ietf-netmod-yang-11.txt> as a Proposed Standard
> 
> The IESG plans to make a decision in the next few weeks, and solicits
> final comments on this action.  Please send substantive comments to the
> [email-masked] mailing lists by 2010-04-09. Exceptionally, comments may
> be sent to [email-masked] instead. In either case, please retain the
> beginning of the Subject line to allow automated sorting.
> 
> The file can be obtained via
> http://www.ietf.org/internet-drafts/draft-ietf-netmod-yang-11.txt
> 
> 
> IESG discussion can be tracked via
> https://datatracker.ietf.org/public/pidtracker.cgi?command=view_id&dTag=
> 17247&rfc_flag=0
> 
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