Re: [Netconf] [i2rs] FW: New Version Notification for draft-hares-i2rs-protocol-strawman-02.txt - 3.1.1

["Joel M. Halpern" <[e-mail]>]

Yes, you interpreted my awful typing correctly.

I don't see any need for anything more, but was allowing that I am not 
fully current on the groups thinking.

Yours,
Joel

On 5/10/16 10:54 AM, Susan Hares wrote:
> Joel:
>
>
>
> See below.   Just trying to wrap up the discussion.
>
>
>
> *From:*jmh.direct [mailto:[e-mail]]
> *Sent:* Tuesday, May 10, 2016 8:12 AM
> *To:* Susan Hares; 'Joel M. Halpern'; 'Andy Bierman'
> *Cc:* [e-mail]; 'Netconf'
> *Subject:* RE: [i2rs] FW: New Version Notification for
> draft-hares-i2rs-protocol-strawman-02.txt - 3.1.1
>
>
>
> If the I2RS aren't is off then the system does not currently support
> this models.  This is just like any other optional YANG module.  If you
> are not currently prepared to use it, you don't claim to support it.
>
>
>
> Sue: I assume you desired to say…  if the I2RS is not on, then the
> system does not support this model.
>
>
>
> Caveat: The NetMod folks may have come up with a more nuanced mechanism.
>
>
>
> Sue: Do we need them to come up with mechanism that indicates I2RS is
> there but off?
>
>
>
> Yours,
>
> Joel
>
>
>
>
>
>
>
> Sent via the Samsung Galaxy S® 6, an AT&T 4G LTE smartphone
>
> -------- Original message --------
>
> From: Susan Hares <[e-mail] <mailto:[e-mail]>>
>
> Date: 5/10/2016 1:25 PM (GMT+01:00)
>
> To: "'Joel M. Halpern'" <[e-mail]
> <mailto:[e-mail]>>, 'Andy Bierman' <[e-mail]
> <mailto:[e-mail]>>
>
> Cc: [e-mail] <mailto:[e-mail]>, 'Netconf' <[e-mail]
> <mailto:[e-mail]>>
>
> Subject: RE: [i2rs] FW: New Version Notification for
> draft-hares-i2rs-protocol-strawman-02.txt - 3.1.1
>
>
>
> Joel:
>
> What happens if the code supports the I2RS agent, but the I2RS agent is
> configured to be "off"?  Is this covered by the deviations or is this
> variable configuration?
>
> Sue
>
> -----Original Message-----
> From: Joel M. Halpern [mailto:[e-mail]]
> Sent: Tuesday, May 10, 2016 1:34 AM
> To: Susan Hares; Andy Bierman
> Cc: [e-mail] <mailto:[e-mail]>; Netconf
> Subject: Re: [i2rs] FW: New Version Notification for
> draft-hares-i2rs-protocol-strawman-02.txt - 3.1.1
>
> As I understand it, if a model requires ephemeral elements, and the
> agent does not support ephemeral, then the agent can not claim to
> support the model.
>
> Yes, deviations allow you to specify this, as Andy says.  But this is
> specifying a failure to conform.
>
> I would go far as to say that such an agent is not an I2RS agent, but
> that is a step beyond the NetConf compliance definitions.
>
> Yours,
> Joel
>
> On 5/9/16 6:09 PM, Susan Hares wrote:
>> Andy and Joel:
>>
>> These are good points.
>>
>> What happens if the data model has some ephemeral sections and the
>> I2RS agent is not supported by the routing system.  The data model
>> would specify the ephemeral section, but there would be no support by
> i2rs.
>>  Is the support of the ephemeral not a variable  condition to be
>> indicated in Yang module library?
>>
>> Sue
>> Sent via the Samsung Galaxy Note5, an AT&T 4G LTE smartphone
>> -------- Original message --------
>> From: Andy Bierman <[e-mail] <mailto:[e-mail]>>
>> Date: 5/7/2016 12:53 PM (GMT-05:00)
>> To: "Joel M. Halpern" <[e-mail] <mailto:[e-mail]>>
>> Cc: [e-mail] <mailto:[e-mail]>, Netconf <[e-mail]
> <mailto:[e-mail]>>, Susan Hares
>> <[e-mail] <mailto:[e-mail]>>
>> Subject: Re: [i2rs] FW: New Version Notification for
>> draft-hares-i2rs-protocol-strawman-02.txt - 3.1.1
>>
>>
>>
>> On Fri, May 6, 2016 at 8:51 AM, Joel M. Halpern <[e-mail]
> <mailto:[e-mail]%20%0b>> <mailto:[e-mail]>> wrote:
>>
>>     Reading the latest revision, in section 3.1.1, the text in bullet 5
>>     says that the data model indicates which portions are ephemeral.
>>     That makes sense to me.
>>
>>     Then bullet 6 says that the management protocol needs to signal (in
>>     its yang library) which parts are ephemeral.
>>
>>     Why the second requirement?  If the data model is supported, and the
>>     data model states that certain items are ephemeral, what would it
>>     mean if the signaling did not also say that.  Conversely, what would
>>     it mean if the signaling said something was ephemeral that the model
>>     does not define as ephemeral?
>>
>>     It may be that I am misreading bullet 6.  Please explain.
>>
>>
>>
>> I think you are correct that the YANG library does not need any
>> changes to identify ephemeral data.  Only the variable components of
>> YANG conformance are contained in the library.
>>
>>
>>     Thank you,
>>     Joel
>>
>>
>>
>> Andy
>>
>>
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>>
>>
>