Re: [NGO] external module properties

On Sun, Apr 27, 2008 at 08:49:53AM -0700, Andy Bierman wrote:

> My point is that we need to thinking more holistically about the
> entire management system, which includes problems such as human factors
> and module life-cycle.

A data modeling language specification is the wrong place to address
human factors.

> We tried the 'blinders-on' approach with SMING/EOS and that didn't
> work out so well.  Focusing on the DML and ignoring the protocol (or
> vice versa) leads to incomplete or broken solutions.

YANG is NETCONF very specific; it is by its very design a domain
specific language for NETCONF data models and not comparable to
SMING/EOS.

> Of course the namespace URI is mandatory, because it is needed
> to properly implement the NETCONF protocol.  The 'YANG philosphy'
> (whatever that is) has nothing to do with it.  Likewise, the
> revision date is needed to properly implement NETCONF applications.

There is a fine distinction here between a language definition their
implementations and the usage of a language in a larger context. For
me, a missing revision statement is something I like to generate a
warning for but it is not an error since NETCONF continues to function
without the revision information.

Note that I am not concerned about this particular case so much; I am
concerned the logic behind. The SMI has been full of CLRs in order to
make this a better world and with YANG we tried to get over this and
we tried to reduce CLRs to a minimum, leaving the specification of
CLRs to CLR documents (called coding styles in the software world and
guidelines in this space).

> YANG is not decoupled from NETCONF, and NETCONF is not decoupled
> from the actual CM problem space.  One needs to consider that sometimes
> CLRs are really CBRs, and important for real interoperability.

Which one of <http://en.wikipedia.org/wiki/CBR> do you mean? I guess
you mean the "Comic_Book_Resources". ;-)

/js

-- 
Juergen Schoenwaelder           Jacobs University Bremen gGmbH
Phone: +49 421 200 3587         Campus Ring 1, 28759 Bremen, Germany
Fax:   +49 421 200 3103         <http://www.jacobs-university.de/>
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