For upgrades and downgrades to or from a non-EEOL release, the current policy is that
you can upgrade and downgrade by no more than three releases at a time. This policy
remains unchanged.
For more information on EEOL releases and to review a list of EEOL releases, see
http://www.juniper.net/support/eol/junos.html.
Downgrade from Release 10.4
To downgrade from Release 10.4 to another supported release, follow the procedure for
upgrading, but replace the 10.4 jinstall package with one that corresponds to the
appropriate release.
NOTE: You cannot downgrade more than three releases. For example, if your
routing platform is running Junos OS Release 9.3, you can downgrade the
software to Release 9.0 directly, but not to Release 8.5 or earlier; as a
workaround, you can first downgrade to Release 9.0 and then downgrade to
Release 8.5.
For more information, see the Junos OS Installation and Upgrade Guide.
Related
Documentation
New Features in Junos OS Release 10.4 for M Series, MX Series, and T Series Routers
on page 6
•
• Changes in Default Behavior and Syntax in Junos OS Release 10.4 for M Series, MX
Series, and T Series Routers on page 37
• Issues in Junos OS Release 10.4 for M Series, MX Series, and T Series Routers on page 48
• Errata and Changes in Documentation for Junos OS Software Release 10.4 for M Series,
MX Series, and T Series Routers on page 66
Copyright © 2010, Juniper Networks, Inc.78
JUNOS OS 10.4 Release Notes
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