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To configure compatible ISSU:
Step Command Remarks
1. Enter system view. system-view —
2. Upgrade the
specified
subordinate switch
(the new master
after the upgrade).
issu load file
upgrading-filena
me slot
slot-number
Required
slot-number is the member ID of the subordinate switch.
The specified subordinate switch reboots with the new boot file
when this command is executed.
Perform the next operation after the subordinate switch is
rebooted.
3. Reboot the master
current manually.
issu run
switchover slot
slot-number
Required
With this command executed:
• The master reboots with the current boot file, and becomes
a subordinate switch after reboot.
• The subordinate switches of the IRF virtual device perform
master election. The winner (the subordinate switch
specified with issu load) becomes the new master.
IMPORTANT:
• The slot-number provided in this command must be the
same as that specified in the issu load.
• Perform the next operation after the reboot process is
completed.
4. Accept the ISSU.
issu accept slot
slot-number
Optional
By default, the rollback timer is 45 minutes. If you do not run
issu accept on the specified subordinate switch or you do not
run issu commit command on any other member switch before
the rollback timer expires, the system automatically stops the
ISSU process and reverts to the previous software version.
IMPORTANT:
• The slot-number argument provided in this command must
be the same as that specified in the issu load.
• When this command is executed, the rollback timer
becomes invalid, which means the boot file cannot be
automatically rolled back.
5. Upgrade an IRF
member switch that
has not been
upgraded.
issu commit slot
slot-number
Required.
• This command upgrades one IRF member switch at a time.
If the IRF virtual device has three or more than three member
switches, repeat this command to upgrade them one by
one.
• When all IRF member switches reboot with the new boot
file, the ISSU process completes.
After executing issu commit, you cannot roll back the current
boot file version BB to former version AA. To do so, use the AA
version boot file as the new boot file version to perform another
ISSU for the IRF virtual device.
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