- Network Parameters
- Critical OpenBoot PROM Configuration Parameters
- Time and Date
- Host Watchdog, Rocker Switch, and Secure Mode Settings
- Password Management
- Firmware Upgrades
- Error Logging
- Error Analysis
- LED Status and Alarms
- Environment Monitoring and Control
- Console Navigation
- Power Failure and Recovery Behavior
- Precautions for Using the SCC
- System Controller Configuration Backups
- Power Connections for Redundancy and Grounding
- Rackmounting and Improving Serviceability
- References
- Acknowledgements
- About the Author
- Ordering Sun Documents
- Accessing Sun Documentation Online
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Console Navigation
The console command is used to transition from the OpenBoot PROM prompt or the Solaris OS prompt to the lom> prompt. The console connection to a 1280 server operates over a shared physical connection to the serial port on the server. It is shared between the LOM firmware and the Solaris OS. prompt and the domain prompt is provided by the LOM escape sequence and the console command. The default escape sequence characters for the lom> prompt are the pound symbol and the period symbol (#.).
If you enter the first character of the escape sequence at the console, the system will delay one second before the character appears on the screen. The system waits to see if the next character in the escape sequence is entered. Thus, the second character of the escape sequence must be entered within the one-second window. If all of the characters in the escape sequence are entered, then the lom> prompt appears. If the next character is not the next character in the escape sequence, then the characters that were typed appear on the screen.
Use the setescape command from the LOM shell on the SC to set the escape sequence. You should choose an escape sequence that does not start with a sequence of characters that is frequently entered at the console. Otherwise, the delay could be confusing.
Use the setescape command from the LOM shell on the SC or the lom -c command from the Solaris OS prompt to check the escape sequence, as in the following example:
# lom -c | grep escape serial escape character=#.
You can also use the lom -X command from the Solaris OS prompt to override, thus changing, the previous escape sequence, as in the following example:
# lom -X $.
You can get to the lom> prompt from the OpenBoot PROM prompt without using the escape sequence by powering down the system to standby by using one of the following methods:
Invoke the power-off command at the OpenBoot PROM prompt (for example, {1} ok power-off).
Remove the SCC for more than 60 seconds to cause a power-off sequence.
Hold the rocker switch in the STBY position for four seconds to invoke a power-off sequence.
Remove power to the system by switching off the circuit breaker.