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Performing compatible ISSU upgrade
# Upgrade the specified subordinate switch (the new master after the upgrade), which is subordinate switch
2 in this example.
<IRF> system-view
[IRF] issu load file soft-version2.bin slot 2
This command will begin ISSU, and the specified board will reboot and be upgraded. Please
save the current running configuration first; otherwise, the configuration may be lost.
Continue? [Y/N]:y
# After the reboot of subordinate switch 2, check whether the boot file of salve switch 2 is soft-version2.bin.
[IRF] display boot-loader
Slot 1
The current boot app is: flash:/soft-version1.bin
The main boot app is: flash:/soft-version1.bin
The backup boot app is: flash:/
Slot 2
The current boot app is: flash:/soft-version2.bin
The main boot app is: flash:/soft-version2.bin
The backup boot app is: flash:/
Slot 3
The current boot app is: flash:/soft-version1.bin
The main boot app is: flash:/soft-version1.bin
The backup boot app is: flash:/
The output shows that the boot file of subordinate switch 2 is soft-version2.bin.
# Reboot the master manually.
[IRF] issu run switchover slot 2
Master will reboot, switch the specified board to master and update the line card. Continue?
[Y/N]:y
In this example, the member ID of the master is 1. After reboot, the master becomes a subordinate switch
in the IRF virtual switch. Then the subordinate switches perform a role election, and salve 2 becomes the
new master because the priority of subordinate switch 2 is higher than that of subordinate switch 3.
# Accept the ISSU upgrade and delete the rollback timer.
[IRF] issu accept slot 2
# Upgrade switches 1 and 3 respectively.
[IRF] issu commit slot 1
The specified board will reboot and be upgraded. Continue? [Y/N]:y
[IRF] issu commit slot 3
The specified board will reboot and be upgraded. Continue? [Y/N]:y
Then the ISSU upgrade process completes and the boot files of all IRF member switches have been
upgraded to the new version.
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