[IPP] Re: Topic for IPP slides at F2F (MFD Alerts - IPP extension)

[IPP] Re: Topic for IPP slides at F2F (MFD Alerts - IPP extension)

Ira McDonald blueroofmusic at gmail.com
Fri Sep 16 16:47:47 UTC 2011


Hi Mike,

Sure I can add a brief description for each new alert code.

But I note that this has never been done before in either IPP PSX
or Printer MIB itself (arguably a Printer MIB deficiency).

Note that, by IPP PSX precedent, ALL IANA Printer MIB alert codes
are available in the REQUIRED "printer-state-reasons" attribute (by
direct transform from the IANA Printer MIB registry).

This supports wider interoperability with IPP implementations that don't
implement the "printer-alert" attribute (keyword/value pairs).

That is, it's an implementation choice to show specific alert conditions
in "printer-state-reasons" - which already has a *complete* set defined
for the Printer MIB and Finisher MIB subunits).

Security Alerts:

I'm happy to explain these - due to copyright, we can't actually use
the IEEE 2600 definitions - though we can mention IEEE 2600 as an
informative reference - normative references to non-public specs are
not allowed by PWG process and precedent.

Cheers,
- Ira


Ira McDonald (Musician / Software Architect)
Chair - Linux Foundation Open Printing WG
Co-Chair - IEEE-ISTO PWG IPP WG
Chair - TCG Embedded Systems Hardcopy SWG
IETF Designated Expert - IPP & Printer MIB
Blue Roof Music/High North Inc
http://sites.google.com/site/blueroofmusic
http://sites.google.com/site/highnorthinc
mailto:blueroofmusic at gmail.com
Christmas through April:
  579 Park Place  Saline, MI  48176
  734-944-0094
May to Christmas:
  PO Box 221  Grand Marais, MI 49839
  906-494-2434



On Thu, Sep 15, 2011 at 11:51 PM, Michael Sweet <msweet at apple.com> wrote:

> On Sep 15, 2011, at 11:05 AM, Ira McDonald wrote:
>
> Hi Mike,
>
> I'd like to add to the IPP slide deck discussion of the MFD Alerts
> for Printer MIB spec which has just had its second review at
> Prototype status:
>
>
> Will do.
>
> ...
>
> Will CUPS pickup the IANA IPP Registry keywords for scanner, fax
> modem, and security alerts in IPP printer-state-reasons attribute?
>
>
> CUPS already supports arbitrary keywords from drivers, so a fax driver
> definitely could set them today.
>
> Scanning is not currently supported via CUPS, so that will have to wait for
> a future implementation.
>
> As for the security keywords, I will need to review them closely; it isn't
> clear that mapping them all to printer-state-reasons makes sense since they
> represent events (alerts) and not persistent conditions.
>
> Moreover, I think all of the keywords need at least a sentence to describe
> what they mean (it is not obvious to me, particularly for the security
> keywords)
>
> __________________________________________________
> Michael Sweet, Senior Printing System Engineer, PWG Chair
>
>

-- 
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.pwg.org/pipermail/ipp/attachments/20110916/1778859d/attachment-0001.html>


More information about the ipp mailing list