I work for a company installing credit card terminals. A lot of the time when we get to a location the client has one line coming from the router, run halfway across the building, and plugged into a POS system. I need to make that one line into two, so that I can plug in my equipment. Right now we just use a switch. Problem is, half the time the damn thing won't work. Sometimes we plug everything in and reset it, and it just starts directing traffic. Sometimes traffic just won't get through the switch at all.
Yesterday I spent three hours trying to make a switch work, it would work with the test router I brought, but just wouldn't do anything with the customer's equipment. DHCP was enabled, I turned off the firewall on their router, it simply would not work. Is there a particular router setting that I'm missing or something?
I appreciate any help that you guys can provide.