I am a computer tech at a small school. We have always set up our printers with a static ip address in a range outside of DHCP. Then would set up the computers to print local – standard tcp/ip to the printers. Recently we are having problems with the printers dropping network connectivity. It is not just one model, although Dell 1700n is a major player. We have updated the firmware on the Dell 1700n but that doesn't help. We have been messing with settings like hard setting the speed and changing timing but haven't had any luck yet. We have disabled SNMP on a couple of printers but it didn’t matter. A couple of interesting symptoms; it seems the HP printers will print garbage and then go offline, the Dell printers will just lose connectivity, the network lights on the NIC will even turn off. The larger MFP like Kyocera seem to be immune to the problem. It seems to have started when we changed out some 100 mb Cisco switches to 1 gb Nortel switches. We tried changing from Auto to 100 full or 100 half on the printers and that did not help. The only thing that works is power cycling the printer. We are running Active Directory, but there is no print server, just local tcp/ip. Any help would be greatly appreciated..