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The software auto-update feature automatically synchronizes the current software images of the
master to devices that are attempting to join the IRF fabric.
To join an IRF fabric, a device must use the same software images as the master in the fabric.
When you add a device to the IRF fabric, software auto-update compares the startup software
images of the device with the current software images of the IRF master. If the two sets of images are
different, the device automatically performs the following operations:
1.
Downloads the current software images of the master.
2.
Sets the downloaded images as its main startup software images.
3.
Reboots with the new software images to rejoin the IRF fabric.
You must manually update the new device with the software images running on the IRF fabric if
software auto-update is disabled.
Configuration prerequisites
Make sure the device you are adding to the IRF fabric has sufficient storage space for the new
software images.
If sufficient storage space is not available, the device automatically deletes the current software
images. If the reclaimed space is still insufficient, the device cannot complete the auto-update. You
must reboot the device, and then access the BootWare menu to delete files.
Configuration procedure
To enable automatic software synchronization with the master:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enable software
auto-update.
irf auto-update enable
By default, software
auto-update is enabled.
Setting the IRF link down report delay
To prevent frequent IRF splits and merges during link flapping, configure the IRF ports to delay
reporting link down events.
An IRF port does not report a link down event to the IRF fabric immediately after its link changes from
up to down. If the IRF link state is still down when the delay is reached, the port reports the change to
the IRF fabric.
An IRF port does not delay a link up event. It reports the link up event immediately after the IRF link
comes up. However, for fiber IRF physical interfaces, the IRF port does not report the link up event
immediately to the IRF fabric if the link up event occurs in the following conditions:
1.
The IRF link was down because the physical interfaces were shut down by using the
shutdown
command or were disconnected.
2.
The IRF link is recovered after you execute the
undo shutdown
command or reconnect the
IRF physical interfaces.
In the above conditions, the IRF port reports the link up event to the IRF fabric after the delay time
expires.
When you configure the IRF link down report delay, follow these restrictions and guidelines:
