H3C S5120-EI Series Operation Manual page 1155

from the master automatically, reboots with the new boot file, and joins the stack again. If the
downloaded boot file and the local file have duplicate file names, the local file is overwritten.
Follow these steps to enable auto upgrade of boot files in an IRF stack:
To do...
Enter system view
Enable auto upgrade of boot
files in an IRF stack
Although IRF stack supports the auto upgrade of boot files, to shorten the time for stack
establishment and reduce the influences caused by the stack establishment to the network, you
are recommended to ensure that the device and the stack master have the same software version
before adding a device into an IRF stack.
After loading the master's boot file automatically, a slave configures the file as the boot file for the
next boot and reboots automatically.
Because system boot file occupies large memory space, to make the auto upgrade succeed,
ensure that there is enough space on the storage media of the slave.
Setting the Delay Time for the Link Layer to Report a Link-Down Event
During the suppression time, the system cannot be aware of the switch between stack link states; after
the suppression time, the link layer reports the link state changes to the system. Use this function to
avoid the reboots of devices caused by the frequent link state changes of stack ports in a short time (for
example, a stack splits and then merges quickly), preventing service interruption.
Follow these steps to set the delay time for the link layer to report a link-down event of a stack:
To do...
Enter system view
Set the delay time for the link
layer to report a link-down
event of a stack
Do not set the time interval to a very long time; otherwise, the stack system will not be aware of the
stack topology changes in time and thus the service will be recovered slowly.
Use the command...
system-view
irf auto-update enable
Use the command...
system-view
irf link-delay interval
1-16
Remarks
—
Optional
Enabled by default
Remarks
—
Optional
The function is disabled by
default.