General NFM-P Release 22.6 or earlier upgrade workflow

The following is the sequence of high-level actions required to upgrade an NFM-P system from Release 22.6 or earlier.

Note: The workflow applies to an upgrade in a staging environment or in a live network.

Pre-upgrade

1	Perform To prepare for an NFM-P system upgrade from Release 22.6 or earlier to collect the required information and to ensure that the correct upgrade conditions are in place.
2	Perform To prepare an SELinux-enabled Release 22.6 or earlier NFM-P system for an upgrade to ensure that SELinux is enabled and in permissive mode before the upgrade.
Upgrade

3	Perform one of the following. Upgrade a standalone NFM-P system; see Standalone NFM-P system upgrade from Release 22.6 or earlier. Upgrade a redundant NFM-P system; see Redundant NFM-P system upgrade from Release 22.6 or earlier.
Post-upgrade

4	If SELinux was enabled in the NFM-P before the system upgrade, you must re-enable SELinux on each station in the system after the upgrade; perform “How do I enable SELinux on the NFM-P?” in the NSP System Administrator Guide.
5	If either of the following is true, perform “How do I enable SELinux enforcing mode for the NFM-P?” in the NSP System Administrator Guide to switch from SELinux permissive mode to enforcing mode: You have performed To prepare an SELinux-enabled Release 22.6 or earlier NFM-P system for an upgrade to set SELinux in permissive mode before the upgrade, and want to restore the use of enforcing mode. The upgrade has enabled SELinux in the NFM-P for the first time, but in permissive mode, and you want the more stringent security of enforcing mode.