attachment
<html><head><meta http-equiv="Content-Type" content="text/html charset=iso-8859-1"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">Ira,<div><br></div><div>Unfortunately, I know of existing implementations for these keywords, so I don't think changing them to use "-fault" at the end is feasible. And at least for all of the media feed keywords the "-error" suffix is likely OK - feed errors generally require user interaction, so typically the printer will be in the stopped state, meeting the requirements of RFC 2911.</div><div><br></div><div>An alternative is to add definitions of 'fax-modem-protocol-warning' and 'fax-modem-protocol-report' and make the other keywords exclusively report errors that stop the printer. The IANA registration could just be for 'fax-modem-protocol' to match the other "printer-state-reasons" registrations.</div><div><br></div><div><br></div><div><div><div>On Mar 17, 2014, at 4:45 PM, Ira McDonald <<a href="mailto:blueroofmusic@gmail.com">blueroofmusic@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div dir="ltr"><div><div><div><div><div><div>Hi Mike,<br><br></div>I suggest that we replace "-error" with "-fault" in all of these printer state <br>reasons.<br></div><br></div>If the current "-error" suffix is simply removed, the meaning of these alerts<br>
</div>is lost.<br><br></div>BTW - normally, we couldn't change these names in the PrtAlertCodeTC <br>textual convention in the IANA Printer MIB, because it's illegal under SMIv2 <br>rules to change the name of an already assigned enumeration value.<br>
<br></div><div>HOWEVER - *none* of the PWG 5107.3 section 9.2 updates for PrtAlertCodeTC<br>were ever registered with IANA - this fell through the cracks in mid-2012.<br></div><div><br></div><div>SUGGESTION - we revise/update PWG 5107.3 and change the IPP and<br>
</div><div>IANA Printer MIB names from "-error" to "-fault" (or "Error" to "Fault" in the<br></div><div>MIB) and correct or submit the IANA IPP and MIB registrations.<br><br></div>
<div>
WDYT?<br><br></div><div>Cheers,<br></div><div>- Ira<br></div><div><br><br></div></div><div class="gmail_extra"><br clear="all"><div><div dir="ltr">Ira McDonald (Musician / Software Architect)<br>Co-Chair - TCG Trusted Mobility Solutions WG<br>
Chair - Linux Foundation Open Printing WG<br>Secretary - IEEE-ISTO Printer Working Group<br>Co-Chair - IEEE-ISTO PWG Internet Printing Protocol WG<br>IETF Designated Expert - IPP & Printer MIB<br>Blue Roof Music / High North Inc<br>
<a style="color:rgb(51,51,255)" href="http://sites.google.com/site/blueroofmusic" target="_blank">http://sites.google.com/site/blueroofmusic</a><br><a style="color:rgb(102,0,204)" href="http://sites.google.com/site/highnorthinc" target="_blank">http://sites.google.com/site/highnorthinc</a><br>
mailto: <a href="mailto:blueroofmusic@gmail.com" target="_blank">blueroofmusic@gmail.com</a><br>Winter 579 Park Place Saline, MI 48176 734-944-0094<br>Summer PO Box 221 Grand Marais, MI 49839 906-494-2434<br><br><div style="display:inline">
</div><div style="display:inline"></div><div style="display:inline"></div><div></div><div></div><div></div><div></div></div></div>
<br><br><div class="gmail_quote">On Mon, Mar 17, 2014 at 2:07 PM, Michael Sweet <span dir="ltr"><<a href="mailto:msweet@apple.com" target="_blank">msweet@apple.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
All,<br>
<br>
It was recently pointed out to me that PWG 5107.3 defines several "printer-state-reasons" keywords with the suffix "-error":<br>
<br>
input-media-tray-feed-error<br>
output-media-tray-feed-error<br>
media-path-input-feed-error<br>
media-path-output-feed-error<br>
scan-media-path-input-feed-error<br>
scan-media-path-output-feed-error<br>
fax-modem-protocol-error<br>
<br>
However, RFC 2911 reserves this suffix for indicating the severity of the reason:<br>
<br>
4.4.12 printer-state-reasons (1setOf type2 keyword)<br>
<br>
This REQUIRED Printer attribute supplies additional detail about the<br>
device's state. Some of the these value definitions indicate<br>
conformance requirements; the rest are OPTIONAL.<br>
<br>
Each keyword value MAY have a suffix to indicate its level of<br>
severity. The three levels are: report (least severe), warning, and<br>
error (most severe).<br>
<br>
- '-report': This suffix indicates that the reason is a "report".<br>
An implementation may choose to omit some or all reports. Some<br>
reports specify finer granularity about the printer state;<br>
others serve as a precursor to a warning. A report MUST contain<br>
nothing that could affect the printed output.<br>
- '-warning': This suffix indicates that the reason is a<br>
"warning". An implementation may choose to omit some or all<br>
warnings. Warnings serve as a precursor to an error. A warning<br>
MUST contain nothing that prevents a job from completing, though<br>
in some cases the output may be of lower quality.<br>
- '-error': This suffix indicates that the reason is an "error".<br>
An implementation MUST include all errors. If this attribute<br>
contains one or more errors, printer MUST be in the stopped<br>
state.<br>
<br>
If the implementation does not add any one of the three suffixes, all<br>
parties MUST assume that the reason is an "error".<br>
<br>
Since an IPP Printer MAY report any of the above keywords when the Printer is not in the stopped state, I propose we add an informative note to table 3 saying something like the following:<br>
<br>
Note 1: Section 4.4.12 [RFC2911] requires that the Printer is in the<br>
stopped state when reporting "printer-state-reasons" values ending<br>
with "-error". Printers MUST append a suffix of "-report" or<br>
"warning" to this keyword when the Printer is not in the stopped<br>
state.<br>
<br>
I'm not sure if we want to clarify that the "job-state-reasons" attribute only contains the registered values without added suffixes.<br>
<br>
_________________________________________________________<br>
Michael Sweet, Senior Printing System Engineer, PWG Chair<br>
<br>
<br>_______________________________________________<br>
wims mailing list<br>
<a href="mailto:wims@pwg.org">wims@pwg.org</a><br>
<a href="https://www.pwg.org/mailman/listinfo/wims" target="_blank">https://www.pwg.org/mailman/listinfo/wims</a><br>
<br></blockquote></div><br></div>
</blockquote></div><br><div>
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: 'Andale Mono'; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: 'Andale Mono'; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">_________________________________________________________<br>Michael Sweet, Senior Printing System Engineer, PWG Chair</div></span></span>
</div>
<br></div></body></html>