From: wamwagner@comcast.net
Date: Tue Jun 17 2008 - 19:29:58 EDT
Power Management is a good example of what is beyond the Standard MIB to CIM aspect of WS-Man for imaging that WIMS/CIM has been doing. Power management is important and (I think) most printers do have something in their private MIB to relate to this. There is a question of whether a MIB to WS-Man Converter would be usable for obejcts in enterprise MIBS.
However, in terms of priority, I suggest that the whole group of "computer system" elements that should be addressed when we do a printer profile are perhaps more critical and perhaps more easily supported (since many are already accessible in printers via SNMP because of the standard MIB-II and Host Resources MIB).
I will add these subjects to the f2f agenda. And, not to pound the drum too hard, it sure would be useful to have more workers on these developments.
Bill Wagner
-------------- Original message --------------
From: <Richard_Landau@Dell.com>
> Nancy,
>
> To agree with and expand on Ira's comments,
>
> - Our charter in WIMS-CIM was specifically *not* to invent new
> management concepts, but to translate the Printer MIB and Semantic Model
> into appropriate and usable classes in the CIM architecture and schema.
> We elected not to transfer the semantics of prtGeneralReset to the CIM
> model.
>
> - CIM has a CIM_PowerManagementService defined already. It contains a
> method, RequestPowerStateChange() that can be used to change the state
> of the device. In the DMTF Profile for servers, this class is
> associated with the CIM_ComputerSystem as the method for changing power
> state. Note that CIM classes are only the protocol representation of
> some internal structures.
>
> - When we write the Network Printer Profile, we should include this
> class as the way to manage power, similarly associated with the instance
> of CIM_ComputerSystem that represents the brains of the device.
>
> I think that it would be very useful to discuss at the f2f
>
> - What states a network printer has;
> - Which of those states are externally, behaviorally visible;
> - What state transitions should be initiated by remote management.
>
> This would be great guidance for future modeling. Can we start with the
> set of power states in the CIM class and see how they might apply to
> network printers? Here's the list, from the MOF, some of which clearly
> to not apply to printers.
>
> Values {
> "Power On",
> "Sleep - Light",
> "Sleep - Deep",
> "Power Cycle (Off Soft)",
> "Power Off - Hard",
> "Hibernate",
> "Power Off - Soft",
> "Power Cycle (Off Hard)",
> "Master Bus Reset",
> "Diagnostic Interrupt (NMI)",
> "Power Off - Soft Graceful",
> "Power Off - Hard Graceful",
> "Master Bus Reset Graceful",
> "Power Cycle (Off - Soft Graceful)",
> "Power Cycle (Off - Hard Graceful)"
> }
>
> rick
>
>
> -----Original Message-----
> From: Ira McDonald [mailto:blueroofmusic@gmail.com]
> Sent: Tuesday, June 17, 2008 12:04
> To: nchen@okidata.com; Ira McDonald; wims@pwg.org
> Cc: Landau, Richard
> Subject: Re: Power Management for printer CIM object
>
> Hi Nancy,
>
> Copying WIMS list so others can comment.
>
> CIM_PowerManagementService is a feature of a CIM_ComputerSystem
> - i.e., we inherited it from standard DMTF CIM profiles when we modelled
> a network printer as a CIM_Printer contained in a CIM_ComputerSystem
> (class corresponds to System group in MIB-II and Host Resources MIB).
>
> Since the Printer MIB has no power management and I can't find any IETF
> standards-track MIB that has power management, a CIM Printing Provider
> (SNMP to CIM proxy) can't implement power management interoperably.
>
> A basic principle of the WIMS-CIM project is "we invent nothing new"
> - so we can look at existing standard DMTF power management classes and
> see if they're appropriate, but SNMP mapping will remain proprietary in
> the near term.
>
> For future PWG work, I think PowerManagement is important - it *is*
> already in the new Projector and Display Management MIB - perhaps a
> topic for discussion at the PWG F2F next Wednesday?
>
> Cheers,
> - Ira
>
> Cheers,
> - Ira
>
> On Tue, Jun 17, 2008 at 9:26 AM, wrote:
> >
> > Hi Rick,
> >
> > I was asked this question about missing power management objects in
> > CIM-printer. This is just for clarification.
> >
> > We do not have power management object for CIM-printer. But in
> > visio-Printer_15.pdf page 6, you did make a note t hat we may need to
> > implement a bunch of "profiles" listed on the diagram that include
> > PowerManagement.
> >
> > What is the plan on Power Management for CIM printer?
> >
> > -Nancy
> >
>
>
>
> --
> Ira McDonald (Musician / Software Architect) Chair - Linux Foundation
> Open Printing WG Blue Roof Music/High North Inc
> email: blueroofmusic@gmail.com
> winter:
> 579 Park Place Saline, MI 48176
> 734-944-0094
> summer:
> PO Box 221 Grand Marais, MI 49839
> 906-494-2434
>
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