[Nml-wg] NMLify of AutoGOLE topology

[Freek Dijkstra]

Hi all,

I've tried to NML-ify the AutoGOLE topology. I did in RDF/XML because
that is probably readable by both OWL and XML folks.

Below are the steps I took in detail, along with intermediate results
(which may help in understanding the differences).

The main changes are:
- made ports and link unidirectional, per NML specs.
- use explicit link object to describe the SDP
  (NML has no connectedTo concept)
- change the urn:ogf:network identifiers to a valid syntax,
  the ones currently in AutoGOLE use are not valid according
  to proposed standard nor previous use in either GLIF or
  perfSONAR community.

The file AutoGOLE-Topo-2012-02-22.rdf gives the result so far.

Notes:

1. The resulting topology file has three layers:
  - NML topology
  - dtox NSNetwork
  - dtox NSA
  I really like the clear distinction between the data plane (NML) and
control plane (dtox/NSI). However, I wonder if we should move this to
two layers, perhaps merging dtox:NSNetwork and nml:topology.
2. The dtox:hasSTP relation now points to a nml:bidirectionalport. NML
defines a similar "hasPort" relation between a nml:Topology and
nml:Port. (and there is some discussion to differentiate between
hasOutboundPort and hasInboundPort). If dtox:NSNetwork and nml:topology
are merged, I recommend to use these relations.
3. Yet unclear how exactly to tie Ethernet specifics to the examples, it
seems prudent to use labels and the subnetwork concept as discussed in
the NML-WG in Lyon (see subversion:
https://forge.ogf.org/svn/repos/nml-examples/20110922/other_examples/configured_vlan.xml;
you need a gridforge login. Drop me a line if you can't access it.)


Regards,
Freek Dijkstra


List of steps I took:

Source: AutoGOLE-Topo-2012-01-25.owl

Removed owl:NamedIndividual
Removed schema definitions (owl:Ontology, owl:AnnotationProperty, etc.)
Removed Position comments (used by auto-gole.appspot.com)
Removed unnecessary comments

Result: AutoGOLE-Topo-2012-01-25.rdf

Changed dtox:lat, dtox:long and dtox:Location to geo84:lat, geo84:long
and geo84:SpatialThing
Corrected label of Netherlight location from Copenhagen to Amsterdam
(geo84 was OK)

Changed dtox:STP to nml:bidirectionalport
Grouped ports of a single network in a nml:topology
Commented dtox:connectedTo, since this is not valid NML
Added rdfs:label to all NSA and all locations
Changed admin contact from string to vCard

Result: AutoGOLE-Topo-2012-02-20.rdf

Change urn:ogf:network identifiers to valid syntax
(urn:ogf:network:<FQDN>:<date>:<opaque>)
Make all bidirectional ports unidirectional
Explicitly defined NML links, with sources and sinks

Result: AutoGOLE-Topo-2012-02-22.rdf

Possible future direction:

Merge NML:topology with dtox:NSNetwork
Remove the dtox:managedBy property, as there is already an inverse
relation dtox:managing to find the correct dtox:NSA
Added switch matrix to each NML topology
Define switching capabilities for each topology.
use nml:hasPort instead of dtox:hasSTP

Result: (the-AutoGOLE-future-is-yet-to-be-written.rdf)
-------------- next part --------------
A non-text attachment was scrubbed...
Name: AutoGOLE-Topo-2012-01-25.owl
Type: text/xml
Size: 94178 bytes
Desc: not available
URL: <http://www.ogf.org/pipermail/nml-wg/attachments/20120222/7d6a594a/attachment-0001.xml>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: AutoGOLE-Topo-2012-01-25.rdf
Type: application/rdf+xml
Size: 52002 bytes
Desc: not available
URL: <http://www.ogf.org/pipermail/nml-wg/attachments/20120222/7d6a594a/attachment-0003.rdf>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: AutoGOLE-Topo-2012-02-20.rdf
Type: application/rdf+xml
Size: 80231 bytes
Desc: not available
URL: <http://www.ogf.org/pipermail/nml-wg/attachments/20120222/7d6a594a/attachment-0004.rdf>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: AutoGOLE-Topo-2012-02-22.rdf
Type: application/rdf+xml
Size: 153902 bytes
Desc: not available
URL: <http://www.ogf.org/pipermail/nml-wg/attachments/20120222/7d6a594a/attachment-0005.rdf>