Upgrade Methods; Non-Issu Upgrade Procedure Summary - HP 5920 series Fundamentals Configuration Manual

Figure 30 System startup process
Start
Boot ROM runs
Press Ctrl+B
promptly?
Startup software images
run
System starts up and CLI
appears
End

Upgrade methods

Upgrading method
Upgrading from the CLI
without using ISSU
Performing an ISSU
Upgrading from the Boot
menu
This chapter only covers upgrading software from the CLI without using ISSU.

Non-ISSU upgrade procedure summary

To upgrade software from the CLI without using ISSU:
Yes
No
Software types
•
Boot ROM image
•
Comware images
(excluding patches)
Comware images
•
Boot ROM image
•
Comware software
images
Enter Boot menus to
upgrade Boot ROM or
startup software
images
Remarks
This method is disruptive. You must reboot the
entire device to complete the upgrade.
The ISSU method enables a software upgrade
without service interruption.
Use this method for an IRF fabric.
For more information about ISSU,
ISSU."
Use this method when the device cannot start up
correctly.
Upgrade an IRF fabric from the CLI instead of the
Boot menu.
The Boot menu method increases the service
downtime, because it requires that you upgrade
the member devices one by one.
103
IMPORTANT:
Performing an