Juregen:

 

Option 4 does make things easy.  What happens if a particular node/variables
that I2RS wants, would not normally be in the configuration?  Should you
configure that node in the empheral store only? 

 

Sue 

 

-----Original Message-----
From: i2rs [mailto:[email protected]] On Behalf Of Juergen Schoenwaelder
Sent: Wednesday, September 24, 2014 3:10 AM
To: Susan Hares
Cc: 'Jeffrey Haas'; [email protected]; [email protected]
Subject: Re: [i2rs] [netmod] Summary of discussion from netmod interim on
i2rs requirements on netmod/netconf

 

On Tue, Sep 23, 2014 at 06:14:16PM -0400, Susan Hares wrote:

> Jeff:

> 

> The fourth option is interesting and creative. A few 

> questions/requests: 1) How would the fourth model be expressed in the 

> yang model  - config (empheral)?

 

The beauty of the fourth option is that it does not require a large set of
new data models. The idea is that you have a standard config data model and
you use the same model for an ephemeral datastore. The server will then take
the contents of the config datastore and 'merge'

it with the content of any ephemeral datastores to produce what the box ends
up doing (the operational state). The merging function will take priorities
into account should conflicts arise. Here is the relevant figure (taken from
the meeting minutes):

 

               +-----------------+

               |                 |

         +--- (+) ---+           |

         ^           ^           v

       +---+       +---+       +---+

       |   |       |   |       |   |

       |(1)|       |   |       |   |

       |   |       |   |       |   |

       +---+       +---+       +---+

 

     NC config  ephemeral    operational

     datastore  datastore      state

 

    (1) The complete NC config datastore is at certain synchronization

    points made persistent

 

    (+) Priority resolution, priorities may be per datastore or per

    user or per 'application' or even per data node

 

/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/>
http://www.jacobs-university.de/>

 

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