Consoles and Serial Ports

We mentioned earlier that there are some special cases of machine configuration that we need to be aware of when configuring serial ports. For example, we have just configured port “A” for a terminal connection, but this assumed the system already had a graphics console connected; the reason for this is as follows.

If a machine is headless (if it doesn't have a graphics console or, more correctly, a keyboard plugged into the keyboard port) then, by default, serial port “A” will become the main interface and will receive any console output. This includes EEPROM, bootup, and system output.

Because this port is effectively acting as the main console, it will also receive a login prompt, even though it hasn't been configured ...

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