Cisco Cisco Nexus 5010 Switch Guida All'Installazione

The configuration is unlocked on the primary and secondary switches.

The installation is complete.

Doing a disruptive upgrade between incompatible images will result in loss of certain configurations 
such as unified ports, breakout, and FEX configurations. See 

 for details.

The following lists conditions where a nondisruptive ISSU might not be possible when upgrading a 
Cisco Nexus 5000 Series access layer switch:

The topology and/or features are not ISSU ready. See the section on ISSU prerequisites for more 
information.

The current release or target release is lower than 5.0(3)N1(1). An ISSU can work only when both 
the current and target releases are equal or later than 5.0(3)N1(1).

To use the ISSU process for Release 4.2(1)N1(1) through Release 5.0(2)N2(1a), you must first 
upgrade to Release 5.1(3)N1(1). After that, use the ISSU process to upgrade to Release 5.2. 

The installation is a downgrade, such as a higher release to a lower release, unless stated otherwise 
in Release specific Information section.

You want to do a disruptive upgrade. See the Forcing an Upgrade section.

You can choose to do a disruptive upgrade if one of the ISSU conditions are not met. One additional 
reason where you might choose to do a disruptive upgrade is when FEXs are upgraded in a rolling 
fashion (one FEX at a time), which requires a longer maintenance window. With a disruptive upgrade, 
all the connected FEXs are upgraded simultaneously, so the maintenance window can be shorter. If you 
need a shorter maintenance window (with traffic disruption), you can force a disruptive upgrade even if 
an ISSU can be leveraged. It is important to note the possibility of an outage if you do a disruptive 
upgrade.

switch # install all force kickstart bootflash:/kickstart_image.bin system

Installer is forced disruptive

Verifying image bootflash:/kickstart_image.bin for boot variable "kickstart".

[####################] 100% -- SUCCESS

Verifying image bootflash:/system_image.bin for boot variable "system".

...

You can also add force at the end of the install all command as follows:

witch # install all kickstart bootflash:/kickstart_image.bin system