R0106-HP MSR Router Series Fundamentals Configuration Guide(V7)

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Figure 47 System startup process
Upgrade methods
U
pg
radin
g
method Software t
yp
es Remarks
Upgrading from the CLI
without using ISSU
• Boot ROM image
• Comware images
(excluding patches)
This method is disruptive. You must reboot the
entire device to complete the upgrade.
Performing an ISSU Comware images
The ISSU method enables a software upgrade
without service interruption.
Use this method for an IRF fabric or
MPU-redundant device.
For more information about ISSU, see
"Performing ISSU."
Upgrading from the Boot
ROM menu
• Boot ROM image
• Comware software
images
Use this method when the device cannot start up
correctly.
This chapter only covers upgrading software from the CLI without using ISSU.
Upgrade procedure summary
To upgrade software from the CLI without using ISSU:
1. Download the upgrade software image file.
2. Register and activate licenses for license-based images. Skip this step if no license is required or
the device already has a valid running license for each license-based image.
3. (Optional.) Preload the Boot ROM image to the Boot ROM.
Start
Finish
Press Ctrl+B
promptly?
Boot ROM runs
Startup software images
run
System starts up and CLI
appears
Enter Boot menus to
upgrade Boot ROM or
startup software
images
Yes
No