[cups.general] Jobs going to Stopped - Cups Restart the Only Resort

[Michael Sweet]

On Nov 4, 2010, at 1:47 PM, Anurag Chourasia wrote:

> Hi Mike,
> 
> Both the printer and the machines have the same subnet mask i.e. 255.255.255.0
> 
> Please note that both the working and non-working machine are on same network.
> 
> However, I have seen this problem with two physical printers now. Printer model is Zebra ZM400 and both are using D-Link Network Server.

I don't have a whole lot of personal experience with D-Link servers, but since it works from one machine and not another I think we can rule out the printers and print servers.  Look at the machines and how they connect to the network (cable, card, port on the switch, etc.)

> Is there anything else I could try to get to the bottom of this issue?

Network analyzers are your best bet; you can also look at port logs (if you have a "smart" switch that provides you with this information).

I'd also try swapping the working and non-working systems - move them as needed and connect the non-working machine to the working machine's cables and visa-versa.

Verify that both systems have the exact same software installed. If the machines are identical (same make/model/configuration of hardware) they should yield identical results over the same network cable and port on the switch you connect to. 

> 
> Regards,
> Anurag
> 
> 
> On Fri, Nov 5, 2010 at 1:55 AM, Michael Sweet <msweet at apple.com> wrote:
> On Nov 4, 2010, at 11:34 AM, Anurag Chourasia wrote:
>> HI Mike,
>> 
>> We have tried using Socket Protocol again for printing but the problem persists. Out of 100 Label print requests, only a few actually come out of the printer while the others are shown as completed successfully but nothing comes out of the printer.
>> 
>> I have also captured the logs using tcpdump for this scenario.
>> 
>> The log in http://paste.org/pastebin/view/22779 is when the print command was sent to the printer but nothing came out of the printer (Even though the JOB Was set to successful Status). 
>> 
>> The log in http://paste.org/pastebin/view/22780 is when the print command was sent to the printer and a label came out of the printer well printed. 
>> 
>> The IP of the printer is 10.15.98.14 
>> 
>> The IP of the machine from where the command was sent is 10.0.157.86 
> 
> Do the printer and machine have the same netmask defined?
> 
> How about the default router?
> 
>> ...
>> 
>> I am not sure how to interpret this. From another Linux machine in the network, I am able to print successfully to this same physical printer using socket protocol.
> 
> Is the other machine on the same network segment as the non-working one?
> 
> My suspicion is that you either have a configuration problem or have a bad network card, port, or cable causing the one machine not to work with this printer.
> 
> ________________________________________________________________________
> Michael Sweet, Senior Printing System Engineer, PWG Chair
> 
> 
> 
> 
> 
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________________________________________________________________________
Michael Sweet, Senior Printing System Engineer, PWG Chair




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