Two native serial port attributes control the operation of remote reboot.
Indicates whether this port is enabled to reboot the machine on receipt of the REMOTE reboot STRING, and if so, whether or not to take a system dump prior to rebooting.
no - Indicates remote reboot is disabled reboot - Indicates remote reboot is enabled dump - Indicates remote reboot is enabled, and prior to rebooting a system dump will be taken on the primary dump device.
Specifies the remote reboot string that the serial port will scan for when the remote reboot feature is enabled. When the remote reboot feature is enabled and the reboot_string is received on the port, a '>' character is transmitted and the system is ready to reboot. If a '1' character is recieved the system is rebooted; any character other than '1' aborts the reboot process. The reboot string has a maximum length of 16 characters and must not contain a space, colon, equal sign, null, new line, or cntrl-\ character.
Remote reboot can be enabled through SMIT, or via the command line. For SMIT the path System Environments -> Manage Remote Reboot Facility may be used for a configured TTY. Alternatively, when configuring a new TTY, remote reboot may be enabled from the Add a TTY or Change/Show Characteristics of a TTY menus. These menus are accessed through the path Devices -> TTY.
From the command line, the mkdev or chdev commands are used to enable remote reboot. For example, the following command enables remote reboot (with the dump option) and sets the reboot string to ReBoOtMe on tty1.
chdev -l tty1 -a remreboot=dump -a reboot_string=ReBoOtMe
This example enables remote reboot on tty0 with the current reboot string in the database only (will take effect on the next reboot).
chdev -P -l tty0 -a remreboot=reboot
If the tty is being used as a normal port, then you will have to use the pdisable command before enabling remote reboot. You may use penable to reenable the port afterwards.