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In addidion to these good ideas, the printers should be in 35.15 space if not already, to prevent the outside world from fondling them. --STeve Andre' On Monday 11 February 2008 13:28:14 Dennis Kelly wrote: > I've seen it many years ago, but the quality of the JetDirect cards > and their TCP/IP stacks have improved since then. If it is happening > to a number of different printers, it could likely be related to > network traffic. Most of these stacks are single threaded and bomb > out if they come across traffic that the firmware can't > process/handle. > > Some recommendations: > > - Upgrade the firmware to the most recent version on all JetDirect cards > > - Disable unused protocols, i.e. DLC, AppleTalk, Netware, FTP, HTTP, > etc. Just make sure you actually don't use them. > > - Limit IP access to the systems that need to communicate directly to > the JetDirect card. > > - Check the traffic on the printer's network segment for anomalies and > find a way to prevent it. > > Hope this helps, > dpk > > On Feb 11, 2008 11:02 AM, Laurence Bates <[log in to unmask]> wrote: > > We are seeing a lot of HP Jetdirect printers disconnecting from the > > network today. It started this morning and many printers will only > > operate for a few minutes before they disconnect. Is anyone else seeing > > this? Any ideas? > > > > > > > > > > > > > > Laurence A. Bates > > > > College of Education > > > > Michigan State University > > > > 217E Erickson Hall > > > > East Lansing > > > > MI 48824 > > > > 517-355-2178 > > > > [log in to unmask]