Cisco Cisco Nexus 5010 Switch Guía De Instalación

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

bootflash:/system_image.bin

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 the force keyword at the end of the install all command as follows:

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

Installer is forced disruptive

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

...

This section describes how to upgrade from Cisco NX-OS Release 5.1(3)N2(1c) and earlier releases. An 
upgrade from these releases is disruptive. Upgrading a Cisco Nexus device also upgrades connected 
Cisco Nexus Fabric Extenders.

To perform a nondisruptive upgrade from Cisco NX-OS Release 5.2(1)N1(1) and later releases, see the 

 for details. You can upgrade Cisco NX-OS Release 4.2(1)N1(1) through Release 

5.1(3)N2(1c) using a two-step ISSU process. 

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