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 M Series, MX Series, and T Series Routers
Copyright © 2010, Juniper Networks, Inc.
If neither NSR nor PIM is enabled on the router to be upgraded or if one of the unsupported
PIM features is enabled but NSR is not enabled, no additional steps are necessary and
you can use the standard upgrade procedure described in other sections of these
instructions. If NSR is enabled and no NSR-incompatible PIM features are enabled, use
the standard reboot or ISSU procedures described in the other sections of these
instructions.
Because the nonstop-routing disable
9.2 and earlier, if both NSR and an incompatible PIM feature are enabled on a router to
be upgraded from Junos OS Release 9.2 or earlier to a later release, you must disable
PIM before the upgrade and reenable it after the router is running the upgraded Junos
OS and you have entered the
Junos OS Release 9.3 or later, you can upgrade to a later release without disabling NSR
or PIM–simply use the standard reboot or ISSU procedures described in the other sections
of these instructions.
To disable and reenable PIM:
On the router running Junos OS Release 9.2 or earlier, enter configuration mode and
1.
disable PIM:
[edit]
user@host# deactivate protocols pim
user@host# commit
Upgrade to Junos OS Release 9.3 or later software using the instructions appropriate
2.
for the router type. You can either use the standard procedure with reboot or use ISSU.
After the router reboots and is running the upgraded Junos OS, enter configuration
3.
mode, disable PIM NSR with the
PIM:
[edit]
user@host# set protocols pim nonstop-routing disable
user@host# activate protocols pim
user@host# commit

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.
statement was not available in Junos OS Release
statement. If your router is running
nonstop-routing disable
nonstop-routing disable
statement, and then reenable
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