Re: [lmap] AD evaluation: draft-ietf-lmap-information-model-16

Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de> Wed, 08 February 2017 15:23 UTC

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Date: Wed, 8 Feb 2017 16:23:53 +0100
From: Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>
To: Alissa Cooper <alissa@cooperw.in>
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Subject: Re: [lmap] AD evaluation: draft-ietf-lmap-information-model-16
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On Tue, Feb 07, 2017 at 10:26:30AM -0500, Alissa Cooper wrote:
> 
> > On Jan 31, 2017, at 2:47 PM, Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de> wrote:
> > 
> > On Tue, Jan 31, 2017 at 09:15:52AM -0500, Alissa Cooper wrote:
> >> 
> >>> On Jan 31, 2017, at 4:44 AM, Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de> wrote:
> >>>> 
> >>> 
> >>> The status reports go to the LMAP controller, so I do not really see
> >>> why there is a specific risk since the controller has access to the
> >>> device ID anyway.
> >> 
> >> I still am missing what is the rationale for sending the device ID in the status reports. I thought the agent ID was meant to uniquely identify the MA.
> >> 
> > 
> > So here we go. I propose the following change:
> > 
> >  - The ma-status-agent-id becomes optional.
> >  - The ma-status-device-id becomes mandatory again.
> > 
> > Rationale:
> > 
> >  If a device does not yet have an MA-ID, then the device-id must be
> >  accessible such that the controller can configure an MA-ID.
> 
> Section 3.1 says:
> 
> "The MA may be pre-configured with an MA ID, or may use a Device ID in
>    the first Controller contact before it is assigned an MA ID.  The
>    Device ID may be a MAC address or some other device identifier
>    expressed as a URI.  If the MA ID is not provided at this stage then
>    it must be provided by the Controller during Configuration.”
> 
> Why would an MA be sending a status report before configuration?
> 

The ma-status-obj models status information, it is not modeling a
status report. I think the reason for having the device-id in the
status information is that this is the only way to obtain it if it is
not configured.

/js

-- 
Juergen Schoenwaelder           Jacobs University Bremen gGmbH
Phone: +49 421 200 3587         Campus Ring 1 | 28759 Bremen | Germany
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