Sun Microsystems Sun Fire V440 Diagnostics And Troubleshooting Manual page 186

Access Through the Network Management Port
Once you have assigned an IP address to the network management port, you can
connect an Ethernet-capable device and access the system console through your
network. This provides for remote monitoring and control. In addition, up to four
simultaneous connections to the system controller sc> prompt are available through
the network management port. For instructions on setting up the network
management port, see "How to Activate the Network Management Port" on
page 179.
For more information about the system console and the ALOM system controller,
see:
"About the sc> Prompt" on page 169
"About the ok Prompt" on page 171
Alternative System Console Configuration
In the default configuration, system controller alerts and system console output
appear interspersed in the same window. After initial system installation, you can
redirect the system console to take its input from and send its output to the serial
port ttyb or to a graphics card's port.
The chief advantage of setting up the system console in this way is that it allows you
to divide system controller alerts and system console output into two separate
windows.
However, there are some serious disadvantages to alternative console configuration:
POST output can only be directed to the serial and network management ports. It
cannot be directed to ttyb or to a graphics card's port.
If you have directed the system console to ttyb, you cannot use this port for any
other serial device.
In a default configuration, the serial and network management ports allow you to
open up to four additional windows by which you can view, but not affect,
system console activity. You cannot open these windows if the system console is
redirected to ttyb or to a graphics card's port.
In a default configuration, the serial and network management ports allow you to
switch between viewing system console and system controller output on the same
device by typing a simple escape sequence or commands. The escape sequence
and commands will not work if the system console is redirected to ttyb or to a
graphic card's port.
The system controller keeps a log of console messages, but some messages are not
logged if the system console is redirected to ttyb or to a graphic card's port. The
omitted information could be important if you need to contact Sun customer
service with a problem.
168 Sun Fire V440 Server Diagnostics and Troubleshooting Guide • July 2003