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Upgrade restrictions and guidelines
The device can start up from the built-in flash memory, CF card, or the USB disk. As a best practice,
store the startup images in the built-in flash memory or CF card. If you store the startup images on
the USB disk, do not remove the USB disk during the startup process.
Preparing for the upgrade
1.
Use the
display version
command to verify the current BootWare image version and startup
software version.
2.
Use the release notes for the upgrade software version to evaluate the upgrade impact on your
network and verify the following items:
Software and hardware compatibility.
Version and size of the upgrade software.
Compatibility of the upgrade software with the current BootWare image and startup software
image.
3.
Use the
dir
command to verify that each MPU has sufficient storage space for the upgrade
images. If the storage space is not sufficient, delete unused files by using the
delete
command.
For more information, see "
4.
Use FTP or TFTP to transfer the upgrade image file to the root directory of a file system on the
active MPU or global active MPU. If the storage medium is partitioned, save the file to the root
directory of the first file system on the storage medium. For more information about FTP and
TFTP, see "
." For more information about partitioning,
see "
Upgrade task list
Tasks at a glance
Remarks
Preloading the BootWare image to
If a BootWare upgrade is required, you can perform
this task to shorten the subsequent upgrade time. This
task helps avoid upgrade problems caused by
unexpected electricity failure.
If you skip this task, the device upgrades the BootWare
automatically when it upgrades the startup software
images.
The BootWare image preloaded into the BootWare
takes effect only after you reboot the device.
completing the upgrade (in standalone mode)
completing the upgrade (in IRF mode)
N/A
(Optional.)
Enabling software synchronization from
the active MPU to the standby MPU at startup
By default, software synchronization is enabled. This
feature enables automatic software synchronization
when the device operates in standalone mode. With
software synchronization, you do not need to manually
upgrade the standby MPU.
To synchronize software from the global active MPU to
other MPUs on an IRF fabric, use the
irf auto-update
enable
command.
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