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ISSU states
During the ISSU process, use display issu state to view the ISSU state of the IRF virtual device, including
whether the new boot file is compatible with the current boot file, and the adopted ISSU method.
Table 2 ISSU state description
State Remarks
Init (Initial state) No ISSU starts or an ISSU upgrade has completed.
Load
A subordinate switch is being upgraded or has been upgraded. To stop the loading
process, perform a manual or automatic roll back to revert the boot file to its
original version.
Switchover The master is being rebooted to trigger a new master election.
Accept
The ISSU has been accepted. To stop the loading process, you have to perform a
manual roll back to revert the boot file to its original version. The automatic roll back
function is not available in this state.
Commit
At least one member switch has not been upgraded to the new version. In this state,
neither manual nor automatic rollback can be performed.
Boot file version rollback
The HP 5820X&5800 switch series support version rollback during ISSU. When ISSU fails to proceed on an
IRF member switch (for example, the new boot file is broken), use this feature to revert the boot file to the
previous version.
The HP 5820X&5800 switch series support the following version rollback methods.
Automatic rollback
When you reboot the specified subordinate switch with issu load, the system automatically creates a
configurable version rollback timer.
• Compatible ISSU method—If you do not run issu accept on the specified subordinate switch or you do
not run issu commit on any other member switch before the rollback timer expires, the system
automatically stops the ISSU upgrade and rolls back the boot file of the upgraded IRF member switches
to the previous version.
• Incompatible ISSU method—If you do not run issu run switchover to upgrade all IRF member switches
that have not been upgraded in one operation before the rollback timer expires, the system
automatically rolls back the boot file of all upgraded IRF member switches to the previous version.
For information about compatible and incompatible ISSU methods, see Enabling version compatibility
ch
e
ck.
Manual rollback
Use issu rollback to roll back the boot file of an IRF member switch to the previous version. Whether manual
rollback can be configured for an IRF member switch depends on the ISSU state. For more information,
see Table 1.
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