130
Figure 50
ISSU flow chart
Start
Use the
display version comp-matrix file
command to
check whether the current and new boot files are compatible.
Compatible
Incompatible
End
Check result
Perform a compatible ISSU upgrade
Upgrade the specified slave with the
issu load file
command
Reboot the master with the
issu run
switchover
command
Accept the ISSU upgrade, and disable
the automatic rollback function with the
issu accept
command
Upgrade the IRF member switches
that have not been upgraded with
the
issu commit
command
Perform an incompatible ISSU
upgrade
Upgrade the specified slave with
the
issu load file
command
Upgrade all the IRF member switches
that have not been upgraded with the
issu run switchover
command
Check whether all the IRF member
switches have been upgraded
Yes
No
ISSU upgrade
cannot be performed
Unknown
Download the new boot file and save it to the flash of
all the IRF member switches
Check the IRF member switches
NOTE:
•
Do not modify the current configuration, plug or unplug cables connected to IRF ports, or delete or
modify the system software image during ISSU. Otherwise, an upgrade failure may occur.
•
To upgrade system software of IRF member switches through ISSU, the member switches must form a
ring topology.
ISSU states
During the ISSU process, you can use the
display issu state
command to display the ISSU state of the IRF
fabric, including whether the new system software image is compatible with the current system software
image, and the adopted ISSU method.
