Re: [netconf] Defaults and NP containers in YangPush

[Martin Bjorklund <[e-mail]>]

Hi,


Balázs Lengyel <balazs.lengyel=[e-mail]> wrote:
> Hello,
> 
> If I have the data model 
> 
>  
> 
> container cont1 {
> 
> presence “xx”;
> 
>   container cont2 {
> 
>     leaf leaf1 {
> 
>       type string;
> 
>       default ddd;
> 
> }}}
> 
>  
> 
> And I create cont1 
> 
> *	should Yang-Push report cont2 or leaf1 as created?
> *	Is this affected by with-default ?

Great question!

I think it must be affected by the server's basic-mode for
with-defaults.

My assumption is that we want the subscriber to be able to keep a copy
of the data on the publisher, and we must allow different default
handling strategies in this copy - i.e., allow different
implementation strategies.

[Another way of viewing this is that if we pass the data in the notif
back to the server in an edit-config, it should effectively be a
no-op.]

So, a 'report-all' server will send 'leaf1' in the notif, but an
'explicit' or 'trim' server will not send it.

Here's another case.  After your operation above, suppose a client
sets 'leaf1' to 'ddd'.  A 'trim' server will not include 'leaf1' in
the notis, but an 'explicit' will include it.  (And a 'report-all'
server will not see a change at all, since 'leaf1' already had
'ddd').

This means that the subscriber may need to be aware of the server's
basic-mode, in order to be able to correctly interpret the notifs.


/martin