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Configuring an External Serial Console
User Guide—Sun Cobalt LX50 Server 4-7
Configuring an External Serial Console
There are two RJ-45 serial console ports on the Sun Cobalt LX50 server, one on the front panel and one on the rear
panel, as shown in Figure 42. You can direct boot messages to a serial console (for example, a laptop running
HyperTerminal).
Figure 42. Front- and Rear-Panel Serial Console Ports
The default communications settings for the serial console ports on the server are:
• 9600 bps
• 8 data bits
• 1 stop bit
• No parity
• No flow control
Only one of the serial console ports can be used at a time. In Chapter 2, “Installing the Server in a Rack,” see “Front
RJ-45 Serial 2 Connector” on page 2-27, and “Rear Panel RJ-45 Serial 2 Connector” on page 2-30 for details on how
their ports are configured.
The intended usage model for the RJ-45 serial connector on the back of the server is for use as an interface to a serial
port concentrator, allowing for remote access to the server’s Emergency Management Port (EMP). The serial
connector on the front panel can be used as a direct connect to the EMP, allowing for PC-to-PC serial
communications to diagnostics on a server mounted in a rack environment.
✍
Note: When Linux starts communicating over the serial port, it requires hardware flow control
to be enabled.
You can connect to the port if you have an adapter cable that has an RJ-45 connector at one end
and a DB9 connector at the other, wired in accordance with Table 8, “Front RJ-45 Serial 2 Port
Adapter Pinout,” on page 2-28 of Chapter 2, “Installing the Server in a Rack.” You can then
connect the COM1 port of a PC or laptop to the serial console using the adapter cable and use
HyperTerminal (or a similar application) to communicate with the server.
An ANSI 500 terminal emulator is needed to have the display appear properly during BIOS
setup and when using the diagnostic CD or Service Partition tools.
OM11670A
Front Panel Serial Console Port
OM11668A
Rear Panel
Serial Console Port (ttyS1)