In any case, the one rule is that these values must match the port that we are plugged into on the switch. Many other users specify these values to match their switch. The vast majority of switches are auto negotiating, many users set Line speed and Duplex to *AUTO. You are plugging the System i system into a network device (switch), and you need to know how the port on that switch is configured. There is one rule to setting line speed and duplex. Line speed and Duplex are two of the parameters. There are only a few parameters to be concerned with regarding the line description which would affect our ability to communicate with the switch or network. Option 5 to display, and a screen similar to the following is shown: On the operating system command line, type the following: It is essential that the Line Description on the System i system is correctly configured. If numerous users are experiencing disconnections, there is typically only one thing on the System i system that can result in this scenario. Once again, a key point is if only one user or one site is experiencing disconnects? Do these users connect to the same TCP/IP address as other users who do not experience disconnects? If the answers to these questions is yes, the issue typically does not reside on the System i system. The System i system is going to route local traffic to the Local Area Network (LAN) and remote traffic based on the route specified in CFGTCP, Option 2. The System i system is going to service all incoming requests the same way. If all users, remote and local, connect to the same IP address (interface) on the IBM System i system and only one location or one user is experiencing disconnects, do not be concerned with the System i system. Are all users (local and remote users) experiencing this issue? Or, is only one user or one remote location experiencing this problem? It is important once again to be as precise as possible in our definition of this issue. This could be FTP, Telnet or other TCP application which connects however, at some point the user loses the session. It is a common issue to have to deal with an end user who is experiencing a drop or disconnected session.