Redirecting the System Console From ALOM to Other Devices

When you first apply power to the host server, ALOM is initially configured to display the system console output. The SERIAL MGT port is shown on the host server as ttya.

If desired, you can use other devices to access the system console besides the terminal connected to the serial management port. You can also use the general-purpose serial port (ttyb) on the back panel of your host server. This port is labeled as 10101. Refer to your server's documentation for more information.

Redirecting the System Console

To redirect the output from the system console to ttyb, perform the following steps:

  1. At the ALOM sc> prompt, type the break command to bring the host server to the OpenBoot PROM prompt (ok). (If you have the kadb debugger configured, type $# to exit kadb first.)
  2. At the sc> prompt, type the console command to access the server's system console.
    sc> console
    ok
  3. At the ok prompt, type the following commands:
    ok setenv input-device ttyb
    ok setenv output-device ttyb
  4. To cause these changes to take effect immediately, type reset-all at the ok prompt. Otherwise, these changes will take effect the next time you cycle the power on the host server.

These changes remain in effect until you manually change the OpenBoot PROM settings back to ALOM (ttya), as described in the next section.

Resetting the Default Console Back to ALOM (ttya)

If you want to redirect the system console's output back to ALOM, type the following commands at the OpenBoot PROM ok prompt:

ok setenv input-device ttya
ok setenv output-device ttya

To cause these changes to take effect immediately, type reset-all at the ok prompt. Otherwise, these changes will take effect the next time you cycle the power on the host server.