Accessing Service Mode - Siemens RUGGEDCOM ROX II User Manual

Chapter 2
Using RUGGEDCOM ROX II
Section 2.8.2

Accessing Service Mode

Service mode grants access to the Linux shell.
To access service mode, do the following:
CAUTION!
Configuration hazard – risk of data corruption. Service mode is provided for troubleshooting and
advanced configuration purposes and should only be used by Siemens technicians. As such, this
mode is not fully documented. Misuse of the commands available in this mode can corrupt the
operational state of the device and render it inaccessible.
CAUTION!
Security hazard – risk of unauthorized access and/or exploitation. SSH is automatically enabled on
port 222 when the device is put in service mode. If the device is connected to the network, a user with
remote access to the device and the root password could access the Linux shell. If required, protect
the device by either:
• Disconnecting the device from the network
• Disabling SSH via maintenance mode before accessing service mode
IMPORTANT!
Changes made to the configuration in this mode will override the current configuration settings (e.g. IP
addresses, VLAN settings, etc.), but are discarded following a system reboot.
1. Connect to RUGGEDCOM ROX II through the RS-232 console connection and a terminal application. For
more information, refer to
2. Reboot the device. For more information, refer to
3. As soon as the device starts to boot up, press ESC. A list of possible boot modes for each partition appears.
****Boot Partition 4****
[4-0]: Debian GNU/Linux, kernel 3.0.0-2-8360e
[4-1]: Debian GNU/Linux, kernel 3.0.0-2-8360e (BIST mode)
[4-2]: Debian GNU/Linux, kernel 3.0.0-2-8360e (single-user mode)
[4-3]: Debian GNU/Linux, kernel 3.0.0-2-8360e (service mode)
****Boot Partition 6****
[6-0]: Debian GNU/Linux, kernel 3.0.0-2-8360e
[6-1]: Debian GNU/Linux, kernel 3.0.0-2-8360e (BIST mode)
[6-2]: Debian GNU/Linux, kernel 3.0.0-2-8360e (single-user mode)
[6-3]: Debian GNU/Linux, kernel 3.0.0-2-8360e (service mode)
Auto booting [4-0], Hit [ESC] key to stop:
Welcome to the boot menu. Please select from the following options:
Enter [BootPartition-BootTarget] (e.g. '4.0') to boot.
'h' Show this help menu
'l' List the available boot targets
'c' Exit to the boot loader command line
Will reboot after 60 seconds of inactivity
:
NOTE
In the example above, the text
46
Section 2.1.1, "Connecting
Section 3.5, "Rebooting the
0
Directly".
RUGGEDCOM ROX II
CLI User Guide
Device".
Accessing Service Mode