Quoting Brian (a...@cityscape.co.uk): > On Thu 15 Oct 2015 at 14:53:16 +0300, Reco wrote: > > > On Thu, Oct 15, 2015 at 02:54:31AM -0500, rlhar...@oplink.net wrote: > > > > > > I brought the printer (and the laptop) back here. I installed tcpdump. I > > > see no requests to 0.0.0.0 udp port 67. > > > > So the printer uses statically assinged IP. This simplifies things :) > > Revert the printer to its factory defaults, which will use DHCP. [1] At > the office it will pick up an address from the network it is on. > > [1] HP have instructions on how to do this.
If you don't have a manual, download one from https://archive.org/details/printermanual-hp-laserjet-2100-service-manual and read chapters 3 (printer) and 6 (comms troubleshooting). The other page that's useful is http://h20564.www2.hp.com/hpsc/doc/public/display?docId=emr_na-bpj05678 Before you reset anything, get it to print the current configuration that your colleagues may be relying on. Make sure you've got the page- count: were you to hold the Job Cancel button *too* long when you do your factory reset, you would clear this number. There's also a separate network configuration page. The reason I mentioned printing is that the web page above mentions holding a button (Test in this instance) for anything up to 30 seconds. On your printer, that *would* clear your page count. Then do your reset and see whether, when you switch it on and connect it to the router, it automatically finds out what network it's on and what it's address is. Assuming the network card has reset, it *could* come up as 192.0.0.192 (but it shouldn't: DHCP should work). Cheers, David.