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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]
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