Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - SYSTEM BASICS CONFIGURATION GUIDE 2010-10-04 Configuration Manual page 529

boot revert-tolerance never
boot subsystem
boot system
Copyright © 2010, Juniper Networks, Inc.
Use to set the boot logic to never revert to the backup image/configuration.
This command does not reboot the system.
Example
host1(config)#boot revert-tolerance never
NOTE: This command is functionally equivalent to specifying no backup
image/configuration, but it allows you to leave the backup settings alone
and to toggle autoreversion on and off. This command is undone by using
the no boot revert-tolerance command, which restores the default settings,
or the boot revert-tolerance command. The default settings are count =
3 (crashes) and time = 1800 (seconds); that is, 3 crashes in 30 minutes.
There is no no version.
See boot revert-tolerance never.
Use to configure the software release the selected subsystem will use the next time
it reboots.
This command does not reboot the subsystem.
Example 1
host1(config)#boot subsystem ct3 rel_1_0_1.rel
The boot backup subsystem version of this command enables you to configure a
backup subsystem for booting.
Example 2
host1(config)#boot backup subsystem ct3 rel_1_0_1.rel
Use the no version to remove the configuration setting.
See boot subsystem.
CAUTION: This command attempts to reprogram the SRP boot PROMs, if
necessary. The SRP has a primary and, typically, a backup boot PROM. If the
boot system command is executed on an SRP with no backup boot PROM,
the following message is displayed: " Write to Backup Boot ROM failed." In
this instance, this message is correct, and you can ignore it.
Chapter 9: Booting the System
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