Basic Procedure for Upgrading to Release 10.1
In order to upgrade to JUNOS 10.0 or later, you must be running JUNOS 9.0S2, 9.1S1,
9.2R4, 9.3R3, 9.4R3, 9.5R1, or later minor versions, or you must specify the
no-validate option on the
request system software install
command.
When upgrading or downgrading the JUNOS Software, always use the
jinstall
package.
Use other packages (such as the
jbundle
package) only when so instructed by a Juniper
Networks support representative. For information about the contents of the
jinstall
package and details of the installation process, see the
Junos OS Installation and
Upgrade Guide
.
NOTE:
You cannot upgrade by more than three releases at a time. For example, if
your routing platform is running JUNOS Release 9.4 you can upgrade to JUNOS
Release 10.0 but not to JUNOS Release 10.1 As a workaround, first upgrade to JUNOS
Release 10.0 and then upgrade to JUNOS Release 10.1.
NOTE:
With JUNOS Release 9.0 and later, the compact flash disk memory requirement
for JUNOS Software is 1 GB. For M7i and M10i routers with only 256 MB memory,
see the Customer Support Center JTAC Technical Bulletin PSN-2007-10-001 at
https://www.juniper.net/alerts/viewalert.jsp?txtAlertNumber=PSN-2007-10-001&actionBtn=Search
.
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
.
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Upgrade and Downgrade Instructions for JUNOS Release 10.1 for M Series, MX Series, and T Series Routers
JUNOS 10.1 Software Release Notes