Compatible; Incompatible; Same; Unknown - HP A7500 Series Configuration Manual

Compatible

The fundamental modules that support the operation of your switch and the service modules are
compatible. The ISSU upgrade between the two versions can successfully proceed.
You can select an upgrade method according to the operating mode of your switch:
Standalone mode
See "ISSU configuration (standalone
IRF mode
If the master has both an active MPU and a standby MPU, and the upgrade method of all LPUs is
displayed as Hotfix, upgrade your switch by following either
or "Member switch-based ISSU upgrade
If the master has only one MPU, or the upgrade method of any LPU is not displayed as Hotfix, upgrade
your switch by following
CAUTION:
When you perform a member switch-based ISSU upgrade, slave switches are rebooted. To implement
non-stop data traffic forwarding during the upgrade process, all devices in the network that are connected
to the slave switches must have a backup link to the master.

Incompatible

The fundamental modules that support the operation of your switch are incompatible.
Standalone mode
Upgrade your switch by following
command the force keyword is required. After starting up with the new software version, the standby
MPU operates in independent active mode and the LPUs can only be upgraded through the reboot
upgrade method.
IRF mode
Upgrade your switch by following

Same

The current system software and that to be upgraded to are the same. No upgrade is needed.

Unknown

The queried version record is not in the version compatibility database. The compatibility information
between the system software image and the queried version is unknown. The current system cannot be
upgraded to the queried version through ISSU.

ISSU upgrade prerequisites

Before you perform an ISSU upgrade, complete the following tasks:
Save the current configuration with the save command.
1.
mode)."
(compatible)."
"Member switch-based ISSU upgrade
"ISSU upgrade
"Member switch-based ISSU upgrade
131
"MPU-based ISSU upgrade
(compatible)."
(incompatible)." When you execute the issu load
(incompatible)."
(compatible)"