Upgrade And Downgrade Instructions For Junos Os Release 10.4 For Srx Series Services Gateways And J Series Services Routers; Upgrade Policy For Junos Os Extended End-Of-Life Releases - Juniper JUNOS OS 10.4 - RELEASE NOTES Release Note

Upgrade and Downgrade Instructions for Junos OS Release 10.4 for SRX Series Services Gateways and J Series Services Routers

Upgrade and Downgrade Instructions for Junos OS Release 10.4 for SRX Series Services
Gateways and J Series Services Routers
Copyright © 2010, Juniper Networks, Inc.
In order to upgrade to Junos OS Release 10.4 or later, your device must be running one
of the following Junos OS Releases:
9.1S1
9.2R4
9.3R3
9.4R3
9.5R1 or later
If your device is running an earlier release, upgrade to one of these releases and then to
the 10.4 release. For example, to upgrade from Release 9.2R1, first upgrade to Release
9.2R4 and then to Release 10.4.
For additional upgrade and download information, see the Junos OS Administration Guide
for Security Devices and the Junos OS Migration Guide.
Upgrade Policy for Junos OS Extended End-Of-Life Releases on page 177

Upgrade Policy for Junos OS Extended End-Of-Life Releases

An expanded upgrade and downgrade path is now available for the Junos OS Extended
End-of-Life (EEOL) releases. You can upgrade directly from one EEOL release to one of
two adjacent later EEOL releases. You can also downgrade directly from one EEOL release
to one of two adjacent earlier EEOL releases.
For example, Junos OS Releases 9.3, 10.0, and 10.4 are all EEOL releases. You can upgrade
from Junos OS Release 8.5 directly to either 9.3 or 10.0. To upgrade from Release 8.5 to
10.4, you first need to upgrade to Junos OS Release 9.3 or 10.0, and then upgrade a second
time to 10.4. Similarly, you can downgrade directly from Junos OS Release 10.4 to either
10.0 or 9.3. To downgrade from Release 10.4 to 8.5, you first need to downgrade to 10.0
or 9.3, and then perform a second downgrade to Release 8.5.
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
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