Irf Mac-Address Persistent - HP FlexFabric 7900 Series Command Reference Manual

When the IRF link changes from up to down, the port does not immediately report the change to
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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
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fabric.
HP recommends setting the delay to 0 seconds in one of the following situations:
The IRF fabric requires a quick master/subordinate or IRF link switchover.
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• The BFD or GR feature is used.
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.
Use undo irf mac-address persistent to enable the IRF fabric to change its bridge MAC address as soon
as the master leaves.
Syntax
irf mac-address persistent { always | timer }
undo irf mac-address persistent
Default
Bridge MAC address of the IRF fabric does not change after the master leaves.
Views
System view
Predefined user roles
network-admin
Parameters
always: Enables the IRF bridge MAC address to be permanent. The IRF bridge MAC address does not
change after master re-election.
timer: Enables the IRF bridge MAC address to remain the same for 6 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 the device does not rejoin the IRF fabric within the time limit, the IRF fabric uses the
bridge MAC address of the new master as the IRF bridge MAC address.
Usage guidelines
IRF bridge MAC persistence specifies the amount of time an IRF fabric can continue using the old master
bridge MAC address as its bridge MAC address after a master re-election.
Bridge MAC persistence is available in IRF mode. When you change the operating mode from IRF to
standalone, the bridge MAC persistence setting is lost, regardless of whether you have saved the
configuration.
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