Setting The Delay Time For The Link Layer To Report A Link-Down Event - 3Com 4210G Series Configuration Manual

If this function is enabled, as soon as a device is added into an IRF, the system compares its software
version with that of the master. If the versions are not consistent, the device downloads the boot file
from the master automatically, reboots with the new boot file, and joins the IRF 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:
To do...
Enter system view
Enable auto upgrade of boot
files in an IRF
Although IRF supports the auto upgrade of boot files, to shorten the time for IRF establishment
and reduce the influences caused by the IRF establishment to the network, you are recommended
to ensure that the device and the IRF master have the same software version before adding a
device into an IRF.
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 IRF 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 IRF ports in a short time (for
example, an IRF 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 an IRF:
To do...
Enter system view
Set the delay time for the link
layer to report a link-down
event of an IRF
Do not set the time interval to a very long time; otherwise, the IRF system will not be aware of the IRF
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
26-16
Remarks
—
Optional
Enabled by default
Remarks
—
Optional
The function is disabled by
default.