If software auto-update is disabled, you must manually update the device with the software images
of the master before adding it to the IRF fabric.
Before you use the software auto-update function, make sure:
The device you are adding to the IRF fabric is compatible with the software version running on
the master. If not, the automatic software upgrading function cannot correctly work. For more
information about the software version, see the release note for that version.
The Flash memory or CF card on the device you are adding to the IRF fabric has sufficient
space for the new software images.
When the master is propagating its software images to the member devices, do not remove or
reboot the active MPU of each member device, and make sure the IRF links between each pair
of member devices are all in up state.
To enable an IRF fabric to automatically synchronize software images of the master to the devices
you are adding to the IRF fabric:
Enter system view.
Setting the IRF link down report delay
You can avoid link flapping causing frequent IRF splits and merges during a short time by
configuring the IRF ports to delay reporting link down events. An IRF port works as follows:
When the IRF link changes from up to down, the port does not immediately report the change
to the IRF fabric. If the IRF link state is still down when the delay time is reached, the port
reports the change to the IRF fabric.
When the IRF link changes from down to up, the link layer immediately reports the event to
the IRF fabric.
To set the IRF link down report delay:
Enter system view.
Set the IRF link down
irf auto-update enable
irf link-delay interval
By default, this function is
The default IRF link down report delay is 0
Recommended value range is 200 to 500
milliseconds. The greater the interval, the
slower the service recovery.