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

Tue Jun 11 23:13:50 UTC 2024

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 <christopher.rizzo at xerox.com>
Date: Tuesday, June 11, 2024 at 4:03 PM
To: Kennedy Smith <smith.kennedy at hp.com>
Cc: PWG Workgroup <ipp at pwg.org>, Michael Sweet <msweet at msweet.org>
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 <smith.kennedy at hp.com>
Date: Tuesday, June 11, 2024 at 3:49 PM
To: Christopher Rizzo <Christopher.Rizzo at xerox.com>
Cc: PWG Workgroup <ipp at pwg.org>, Michael Sweet <msweet at msweet.org>
Subject: Re: [IPP] What value do IPP Printers provide for "printer-name"?

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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 <Christopher.Rizzo at xerox.com> wrote:

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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/<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" <ipp-bounces at pwg.org <mailto:ipp-bounces at pwg.org> on behalf of ipp at pwg.org <mailto:ipp at pwg.org>> wrote:

Smith,

> On Jun 11, 2024, at 3:22 PM, Kennedy, Smith (Wireless & IPP Standards) <smith.kennedy at hp.com <mailto:smith.kennedy at hp.com>> 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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