+ 0 Votes The WLAN is the same network as the wired LAN of course robo_dev February 20, 2013 at 12:12am PST You need to disable DHCP in the router and make sure your DHCP scope in the server does not overlap with the router IP address, of course. You should set a static IP for the printer, the server itself, and the router. I cannot see your screenshots...what DNS errors are you getting? Windows by default will use the default gateway as the DNS server, so as long as DHCP and DNS services are running in the server, that should work. One potential issue is if by chance the switch is mis-negotiating the link speed/duplex with the router Ethernet port, this may make DHCP not work. As a test, make sure the server and the workstation are plugged into the same switch.