Failures Subsequent To Power-On; Troubleshooting During Post/Obp And During Boot Process - Sun Microsystems Netra ct Service Manual

4.8.5

Failures Subsequent to Power-On

Symptom
Cannot connect successfully to a TTY serial port; there are no POST messages and
unable to send keyboard input.
Action
1. Check the TTY cable for proper setup.
2. If you do not see any output after connecting the TTY terminal to the CPU
transition card, remove it and connect it to the COM port of the CPU card and try
again.
4.8.6 Troubleshooting During POST/OBP and During
Boot Process
This section describes certain possible problems encountered while running POST
and OBP and during the boot process.
Symptom
POST error message displays:
cannot establish network service
Action
This might be a hardware address problem. Add or check the media access control
(MAC) address to the server and the IP address at the server.
4-22 Netra ct Server Service Manual • February 2001