[I2rs-proto-dt] I2RS meeting

Andy Bierman <andy@yumaworks.com> Sun, 01 November 2015 20:35 UTC

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From: Andy Bierman <andy@yumaworks.com>
To: Susan Hares <shares@ndzh.com>, i2rs-proto-dt@ietf.org
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Subject: [I2rs-proto-dt] I2RS meeting
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Hi,

I plan to listen in to the I2RS meeting.
It's probably too late for a conf-call before the meeting,
but I am available.

I think it is OK to say the YANG constraints apply to
the derived "intended config" and also apply
to the running datastore as defined in YANG.

That means if the max-entries is 5, then 5 can exist in
the running config, and new entries added to ephemeral
must override entries in running.  Retrieving the intended config
actually used (e.g., which config entry is disabled) is
a different issue.  The intended config can only have 5 entries
in it.  It falls out that the ephemeral datastore can only
have 5 entries in it as well.

Not all YANG constraints are as easy as min-elements,
and max-elements.

mandatory, must, when, and unique need more careful thought


Andy