On Fri, Sep 11, 2015 at 10:54:22AM +0100, Robert Wilton wrote: > > > >Then Lada brought up the example of ip addresses. It was mentioned > >on the call that for ip addresses there would be three lists; one for > >intended, one for applied, and one in derived state, where the one in > >derived state is what the box *really* uses. So for example if it > >gets an ip from dhcp, it will be in the derived state list, but not in > >applied config. > > > >Why is this ip-address list different from the interface list? Why > >was it enough with two lists for interfaces, but we need three for ip > >addresses? > I don't see that they are different. I think that you have 3 > lists/leaves in both cases: > > I.e. I would say that 3 IP addr leaves are required in an async system, > at a given time t: > - only the intended leaf can indicate what IP addr config the operator > wants on the interface (if any). > - only the applied leaf can indicate what IP addr is actually being > used as the configured value on the interface. > - only the derived leaf can indicate what IP addr is actually > operationally being used for the interface (which might be due to IP > addr config, DHCP, or perhaps some other mechanism). > > I think that in the both kwatsen-netmod-opstate and > wilton-netmod-opstate there are logically 3 interface lists as well: > - /if:interfaces is logically split into 2, either through being > present in separate running and applied datastores, or through having > separate cfg-intended/cfg-applied leaves. > - /if:interfaces-state, which I perceive as logically the derived > state for an interface. >
My personal requirement would be to be able to find all IP addresses of an interface that are operationally used in one place. /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/> _______________________________________________ netmod mailing list netmod@ietf.org https://www.ietf.org/mailman/listinfo/netmod
