Intermittent Print issue across LAN
Posted on 2006-11-14
HP Printer Issue.
We are currently experiencing an issue with HP printers that after a couple of months trying to rectify the problem we seem no closer to a solution. An overview of the issue is:
When a print job is sent to the printer, the print server shows the job as printing but the printer does not respond to the job at all. This effectively blocks the printer to all other tasks. To clear the printer you need to log onto the printer server with administrative privilege, delete the task, restart the print spooler, and delete the task again. This fault started small, with one printer semmingly affected and has now grown to include all HP printers. The fault only happens for about 5% of print jobs (yes, this is a guess) and is not consistent for machine combinations. (i.e. not a particular computer to a particular printer.)
Hardware: Printer Server: W2K3 SP1 with HP Jet Admin
HP Printers: HP Laserjet 5Si x1
HP LaserJet 4/4M x1
HP Laserjet 4 Plus x3
HP Laserjet 2100 x2
HP Laserjet 4100 x1
HP Laserjet 4050 x5
HP Laserjet 5000 x1
Xerox Workcentre Pro 320/315 x2
Fuji Xerox Document Centre 250 x1
Only the HP printers are affected.
Moved machines to another Print Server. Results are the same. Machines continue to ignore print requests.
Configured network so that ALL switches on a connection between a test printer and the print server were replaced. No change. (i.e. bypassed all of the switches between the printer and the print server.)
We have swapped printer locations.
We have been monitoring the network with wireshark installed on the Print Server. The results are in-conclusive and a little disturbing. The failures are seen in one of two ways. We have only been monitoring traffic from the Printer Servers to the printers. All of our printers are in an exclusive sub-net of our network, so easy to see this happen.
In all failures the server fails to handshake with the printer concerned. We have seen the server send sync packets to the printer without reply and the print server fail to call the printer at all.
Currently waiting result of moving all HP Printers off "HP Standard TCP/IP Port" to a "Standard TCP/IP Port" No results of this move as yet, simply because it is too soon to tell.