[Nsi-wg] Forwarding to NSI group - from NML group

Inder Monga imonga at es.net
Sat May 7 15:57:25 CDT 2011


Please review the draft documents and send comments to Freek or NML 
mailing list.

Inder


> ------------------------------------------------------------------------
>
> *From:* Freek Dijkstra <Freek.Dijkstra at sara.nl>
> *Date:* May 7, 2011 1:44 PM
> *To:* Network Markup Language Working Group <nml-wg at ogf.org>
> *Subject:* [Nml-wg] urn:ogf:network specification
>
>
> All,
>
> I finally written or updated three documents:
>
> 1. Delegation of urn:ogf to the OGF
> 2. Procedure for registration of namespaces within urn:ogf
> 3. Specification of urn:ogf:network (also attached)
>
> All documents can be found in the repository at
> http://forge.ogf.org/svn/repos/urn-ogf-docs
>
> Only document #3 is in scope of the NML working group.
> I welcome feedback for all documents though.
>
> Delegation of urn:ogf to the OGF
> ================================
> See http://tools.ietf.org/html/draft-dijkstra-urn-ogf
>
> Please sent comment to me off-list or to the urn-nid at ietf.org mailing list.
>
> Procedure for registration of namespaces within urn:ogf
> =======================================================
> See http://forge.ogf.org/sf/go/artf6478
>
> Please leave comments at this artifact or sent them to me off-list.
>
> Specification of urn:ogf:network
> ================================
> See http://forge.gridforum.org/sf/go/doc16260
>
> Please sent comments to the NML-WG mailing list or sent them to me off-list.
>
> I certainly appreciate feedback on the following two issues.
>
> Compatibility with GLIF and perfSONAR usage
> -------------------------------------------
>
> The current syntax is compatible with both current usage, although it is
> now specified that recipients of a URN SHOULD NOT interpret the local
> part. This is a change from the existing use.
>
> Also, the document specifies that the following two URNs are NOT lexical
> equivalent. I have no opinion on this. Should this be equivalent or not?
> - urn:ogf:network:example.net:path:2011-0418
> - urn:ogf:network:domain=example.net:path:2011-0418
>
> International Characters
> ------------------------
>
> No international characters are allowed. I actually worked out a solid
> schema (using RFC 5982 and NFKD normalisation that would allow quite a
> few code points, but still have a very simple URN comparison -- no
> decoding required.), but decided not to use it.
>
> I was finally convinced NOT to allow international characters by the
> following comments on the urn at ietf.org list:
>
>      If you allow people to assign URNs as they prefer, they always
>      tend to "invent" some semantic rules.
>
>      At the end you have your database full of Identifiers like:
>      [institution]-[division]-[collection-name]-[date]-[item-number]
>
>      This goes fine many years.
>      Till the day the collections are renamed or two divisions fusion
>      under another name or renaming of the institution or ...
>
>      Experiences like those are the reason why many colleagues with
>      Long Term Archiving background propagate Identifiers without
>      semantics --meaningless strings just for machines.
>
>      IMHO that is the problem and not if those meaningful-names written
>      in Kanji, Chinese, Arabic or Krill.
>
>      Seriously I would allow ONLY numbers and 3-4 separator chars if I
>      could define a new generation ID system. That is NOT "restrictive"
>      but functional and problem free.
>
> (source: http://www.ietf.org/mail-archive/web/urn/current/msg01564.html)
>
>
> Regards,
> Freek
> _______________________________________________
> nml-wg mailing list
> nml-wg at ogf.org
> http://www.ogf.org/mailman/listinfo/nml-wg
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