At work, we have 2 serial printers that are connected to an external device server (MSS4 Lantronix
). This device is connected to a small unmanaged switch, along with a pc1, then to our network in the main switch.
From pc1, everything works fine, printing and pinging the MSS4, and getting anywhere in the network.
From another pc in the office, I can ping pc1, but I can't ping the MSS4. If i remove the unmanaged switch, and connect the MSS4 directly in the main switch, then everything works.
Any idea ?