Irf Link-Delay; Irf Mac-Address Persistent - HP 6125XLG Command Reference Manual

[Sysname] irf domain 10

irf link-delay

Use irf link-delay to set a delay for the IRF ports to report a link down event.
Use undo irf link-delay to restore the default.
Syntax
irf link-delay interval
undo irf link-delay
Default
The IRF link down event report delay is 4 seconds.
Views
System view
Predefined user roles
network-admin
Parameters
interval: Sets the IRF link down report delay in the range of 0 to 10000 milliseconds. If the interval is set
to 0, link down events are reported without any delay.
Usage guidelines
An IRF link down report delay helps avoid link flapping. Link flapping 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.
HP recommends setting the delay to 0 seconds in one of the following situation:
• The IRF fabric requires a fast master/subordinate or IRF link switchover.
The BFD or GR feature is used.
•
If the CFD feature is used in the IRF fabric, make sure the delay interval is smaller than the maximum CCM
lifetime. For more information about CFD, see High Availability Configuration Guide.
Examples
# Set the IRF link down report delay to 300 milliseconds.
<Sysname> system-view
[Sysname] irf link-delay 300

irf mac-address persistent

Use irf mac-address persistent to configure IRF bridge MAC persistence.
10