NOTE: Before upgrading, back up the file system and the currently active JUNOS
configuration so that you can recover to a known, stable environment in case the
upgrade is unsuccessful. Issue the following command:
user@host> request system snapshot
The installation process rebuilds the file system and completely reinstalls the JUNOS
Software. Configuration information from the previous software installation is retained,
but the contents of log files might be erased. Stored files on the routing platform,
such as configuration templates and shell scripts (the only exceptions are the
juniper.conf and ssh files) may be removed. To preserve the stored files, copy them
to another system before upgrading or downgrading the routing platform. For more
information, see the Junos System Basics Configuration Guide.
Upgrade and Downgrade Instructions for JUNOS Release 10.1 for M Series, MX Series, and T Series Routers ■ 99
Upgrade and Downgrade Instructions for JUNOS Release 10.1 for M Series, MX Series, and T Series Routers
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