Hi,
attached are the minutes of the 2015-03-31 virtual interim meeting.
Please let me know if something needs fixing.
You can find all the virtual interim meeting minutes next to the YANG
1.1 issue list in the NETMOD WG subversion repository:
http://svn.tools.ietf.org/svn/wg/netmod/yang-1.1/
/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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NETCONF Data Modeling Language WG (netmod)
19th YANG 1.1 Virtual Interim
Monday, August 31st, 2015, 17:00-18:00 CEST
Minutes Juergen Schoenwaelder
=============================================================
* Participants
DB = Dean Bogdanovic
JS = Juergen Schoenwaelder
KW = Kent Watsen
LL = Ladislav Lhotka
MB = Martin Bjorklund
MJ = Mahesh Jethanandani
* Definition of 'data tree'
One option is to define 'data tree' to capture the choice currently
embedded in the xpath expression evaluation section. This will make
the xpath section way simpler. It is unclear whether this also
brings simplification at other places.
Is it a goal to remove any reference to <running/> in normative
text? Note that RESTCONF does not have <running/> but instead a
unified datastore (but it seems this got lately changed again).
Observation: YANG does not define terms like 'datastore' or
'configuration datastore' or <running/>. RFC 6020 is silently
assuming the import of these terms from RFC 6241.
MB: I suggest to import the necessary terms.
JS: I agree that key terms should be defined in the document or
the definition should be imported. In an ideal world, we would have
an architecture document defining architectural concepts and then
YANG and protocol specifications would import from there. We can
only slowly move to an ideal world in the IETF.
KW: Should we refer to an 'intended' configuration datastore instead of
the running configuration datastore?
LL: Perhaps 'active' configuration with 'active' meaning 'running' on a
traditional NETCONF server?
KW: running + ephemeral => intended => applied
MB: YANG 1.0 clearly uses running. If we create a new term, it must
resolve to <running/> in NETCONF.
LL: The issue for me is config false node refering to a config true
node. With possible future extensions of NETCONF (or RESTCONF),
referring to <running/> may not be useful anymore.
MB: The notifications in the SMIv2 mapping to YANG make use of
references to <running/> datastore content.
JS: But this is accomplished via leafrefs, not via xpath expressions.
Resolution: We keep the choice text in xpath section. We will replace
<running/> with 'running configuration datastore'.
What about data tree? It seems to make sense to expand its
definition but we need to figure out where the expansion would not
be OK. LL volunteers to take a look. MB will do this as well.
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