Re: [IPP] What value do IPP Printers provide for "printer-name"?

[Charles Armstrong via ipp <[e-mail]>]

Hi Smith,
Here's the response from Canon:


  *   printer-name : Model name. The value is fixed (e.g. XK500 series, iR-ADV C3520)
  *   printer-make-and-model : Specific printer manufacturer and model name, and is fixed. (e.g. Canon XK500series, Canon iR-ADV C3520)
  *   printer-dns-sd-name : Bonjour Service Name

Canon doesn't provide the hostname for the "printer-name" attribute.
Best Regards,
Charles
________________________________
From: ipp <[e-mail]> on behalf of Anton Thomasson via ipp <[e-mail]>
Sent: Wednesday, June 12, 2024 11:39 AM
To: ISTO-PWG Internet Printing Protocol workgroup discussion forum <[e-mail]>
Cc: Anton Thomasson <[e-mail]>
Subject: Re: [IPP] What value do IPP Printers provide for "printer-name"?

Email was not sent from a Canon Network!
Hi

I too expect something human-useful here.
Looking through my user-supplied attribute dumps, i see most printers doing something decent; mostly model-based.

Some interesting outliers:

  *   Xerox WorkCentre 6515: "192.168.1.74"
  *   Various Brother printers: "" (empty string)
  *   Brother VC-500W: "print" (from /ipp/print presumably)
  *   EPSON SC-P900: "ipp/print"

Br,
Anton

Den ons 12 juni 2024 kl 12:38 skrev Arun Holla via ipp <[e-mail]<mailto:[e-mail]>>:

Hi Smith,



For the Fiery Digital Front End servers, here are the IPP attribute values being populated:



  *   printer-name --> ‘hostname’
  *   printer-make-and-model --> Specific printer manufacturer and model name, and is fixed.
  *   printer-dns-sd-name --> Bonjour Service Name concatenated with the last 3 octets of the Mac address (similar to Xerox). Default is the printer manufacturer and model name concatenated with the 3 octets of Mac address. This helps to keep it unique as it is used during the printer discovery. This value changes when the Bonjour service name is changed by the user.



Thanks,

-Arun-

From: ipp <[e-mail]<mailto:[e-mail]>> On Behalf Of Rizzo, Christopher via ipp
Sent: Wednesday, June 12, 2024 4:44 AM
To: Kennedy, Smith (Wireless & IPP Standards) <[e-mail]<mailto:[e-mail]>>
Cc: Rizzo, Christopher <[e-mail]<mailto:[e-mail]>>; PWG IPP WG Reflector <[e-mail]<mailto:[e-mail]>>
Subject: Re: [IPP] What value do IPP Printers provide for "printer-name"?



[EXTERNAL]

Of course - I just thought of what happens when there is a name conflict with another device on the network, and tested it.



The conflict caused the registered name via MDNS to have "(2)" appended to it, but neither printer-name nor printer-dns-sd-name were updated to match.



So now I'm wondering if that is a bug. Is that a bug?  I think that is as I read PWG 5100.13 - printer-dns-sd-name at a minumum should have changed to match the MDNS (updated) registered name.



Chris



Christopher Rizzo

Engineer II, Software Engineering

Design & Development Engineering



[signature_965322133]<http://www.xerox.com/>



Xerox Corporation

Virtual Office Employee

26600 SW Parkway Ave

Wilsonville, OR 97070



[signature_444176381]<https://www.linkedin.com/company/xerox/>   [signature_1244739495] <https://www.youtube.com/user/XeroxCorp>    [signature_4095302439] <https://twitter.com/Xerox>    [signature_510884951] <https://www.instagram.com/xerox/>    [signature_496444296] <https://www.facebook.com/XeroxCorp>





From: Christopher Rizzo <[e-mail]<mailto:[e-mail]>>
Date: Tuesday, June 11, 2024 at 4:03 PM
To: Kennedy Smith <[e-mail]<mailto:[e-mail]>>
Cc: PWG Workgroup <[e-mail]<mailto:[e-mail]>>, Michael Sweet <[e-mail]<mailto:[e-mail]>>
Subject: Re: [IPP] What value do IPP Printers provide for "printer-name"?



Yes, both are updated together.



And they are independent of the hostname



Chris



Christopher Rizzo

Engineer II, Software Engineering

Design & Development Engineering



[signature_2133543743]<http://www.xerox.com/>



Xerox Corporation

Virtual Office Employee

26600 SW Parkway Ave

Wilsonville, OR 97070



[signature_379100592]<https://www.linkedin.com/company/xerox/>   [signature_3069953614] <https://www.youtube.com/user/XeroxCorp>    [signature_2858899317] <https://twitter.com/Xerox>    [signature_3573846891] <https://www.instagram.com/xerox/>    [signature_2872972201] <https://www.facebook.com/XeroxCorp>





From: Kennedy Smith <[e-mail]<mailto:[e-mail]>>
Date: Tuesday, June 11, 2024 at 3:49 PM
To: Christopher Rizzo <[e-mail]<mailto:[e-mail]>>
Cc: PWG Workgroup <[e-mail]<mailto:[e-mail]>>, Michael Sweet <[e-mail]<mailto:[e-mail]>>
Subject: Re: [IPP] What value do IPP Printers provide for "printer-name"?



CAUTION:   This email originated from outside the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe.

Thanks Chris! HP printers do something similar for the default DNS-SD Instance Name. If Xerox printers provide the same value for "printer-name" as "printer-dns-sd-name", if one changes then so does the other?



Smith



On Jun 11, 2024, at 3:21 PM, Rizzo, Christopher <[e-mail]<mailto:[e-mail]>> wrote:



CAUTION: External Email

The Xerox devices that I work on use the Bonjour advertisement name for IPP printer-name. I cannot speak for all Xerox products.

The factory default for this is "Xerox <model> (<last 3 bytes of eth mac addr>)".

Reason for the mac addr append is for customers that purchase more than one device they can be identified while avoiding the need for initial conflicts in name resolution.

Chris

Christopher Rizzo
Engineer II, Software Engineering
Design & Development Engineering

<http://www.xerox.com/>

Xerox Corporation
Virtual Office Employee
26600 SW Parkway Ave
Wilsonville, OR 97070

<https://www.linkedin.com/company/xerox/<https://www.linkedin.com/company/xerox>> <https://www.youtube.com/user/XeroxCorp> <https://twitter.com/Xerox> <https://www.instagram.com/xerox/<https://www.instagram.com/xerox>> <https://www.facebook.com/XeroxCorp>





On 6/11/24, 12:46 PM, "ipp on behalf of Michael Sweet via ipp" <[e-mail] <mailto:[e-mail]<mailto:[e-mail]%20%3cmailto:[e-mail]>> on behalf of [e-mail]<mailto:[e-mail]> <mailto:[e-mail]>> wrote:


Smith,


> On Jun 11, 2024, at 3:22 PM, Kennedy, Smith (Wireless & IPP Standards) <[e-mail] <mailto:[e-mail]<mailto:[e-mail]%20%3cmailto:[e-mail]>>> wrote:
> ...
> So the attributes involved in a discussion were:
>
> printer-name (RFC 2911 / 8011 - required)
> printer-make-and-model (RFC 2911 / 8011 - recommended)
> printer-dns-sd-name (PWG 5100.13 - required)
>
> The wording of "printer-name" makes it sound like it should be a unique name, not a model name...


A printer by any other name would smell as sweet?


From RFC 8011, "printer-name" is *not* a unique name, just a more friendly one:


5.4.4. printer-name (name(127))


This REQUIRED Printer attribute contains the name of the Printer. It
is a name that is more End User friendly than a URI. An
Administrator determines a Printer's name and sets this attribute to
that name. This name can be the last part of the Printer's URI, or
it can be unrelated. In non-US-English locales, a name can contain
characters that are not allowed in a URI.


________________________
Michael Sweet





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