11
Default level
3: Manage level
Parameters
interval
: Sets the IRF link down report delay in milliseconds. The value range is 0 to 10000. If your IRF
fabric requires a fast master/subordinate or IRF link switchover or has deployed the BFD or GR feature,
H3C recommends setting the delay to 0 seconds.
Description
Use
irf link-delay
to set the delay for the IRF ports in the IRF fabric to report a link down event.
Use
undo irf link-delay
to restore the default.
By default, the IRF link down event report delay is 4 seconds.
An IRF link down report delay helps avoid link flapping, which causes frequent IRF splits and merges
during a short time.
An IRF port handles link down and link up events 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.
Examples
# Set the IRF link down report delay to 300 milliseconds.
<Sysname> system-view
[Sysname] irf link-delay 300
irf mac-address persistent
Syntax
irf mac-address persistent
{
always
|
timer
}
undo irf mac-address persistent
View
System view
Default level
3: Manage level
Parameters
always
: Enables the IRF bridge MAC address to be retained forever. The IRF bridge MAC address does
not change after master re-election.
timer
: Enables the IRF bridge MAC address to remain the same for six minutes after the master device
leaves. If the device rejoins the IRF fabric before the time limit is reached, the IRF bridge MAC address
does not change. If not, the IRF fabric uses the bridge MAC address of the new master as the IRF bridge
MAC address.
