Sun Microsystems Sun Fire V440 Diagnostics And Troubleshooting Manual page 215

Certain OpenBoot configuration variables control from where system console input
is taken and to where its output is directed. The table below shows how to set these
variables in order to use the serial management and network management ports,
ttyb, or a local graphics monitor as the system console connection.
OpenBoot Configuration Variables That Affect the System Console
TABLE A-4
OpenBoot Configuration Variable
Name
output-device
input-device
* POST output will still be directed to the serial management port, as POST has no mechanism to direct its output
to a graphics monitor.
The serial management port and network management port are represented in the
OpenBoot configuration variables as ttya. However, the serial management port
does not function as a standard serial connection. If you want to connect a
conventional serial device (such as a printer) to the system, you need to connect it to
ttyb, not the serial management port. See the Sun Fire V440 Server Administration
Guide for more information.
It is important to note that the sc> prompt and POST messages are only available
through the serial management port and network management port. In addition, the
ALOM system controller console command is ineffective when the system console
is redirected to ttyb or a local graphics monitor.
In addition to the OpenBoot configuration variables described in
other variables that affect and determine system behavior. These variables are
discussed in more detail in "Controlling POST Diagnostics" on page 13.
Setting for Sending System Console Output to:
Serial and
Network Management
Ports Serial Port (ttyb)
ttya ttyb
ttya ttyb
Appendix A
Local Graphics
* *
Monitor
screen
keyboard
TABLE A-4
Configuring the System Console
, there are
197