R211x-HP Flexfabric 11900 IRF Command Reference

14
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
mdc-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 before the time limit is reached, 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. Changing the operating mode from IRF to standalone
causes loss of the bridge MAC persistence setting even if you have saved the configuration.
An IRF fabric by default uses the bridge MAC address of the master device as its bridge MAC address.
Layer 2 protocols, such as LACP, use this bridge MAC address to identify the IRF fabric. On a switched
LAN, the bridge MAC address must be unique.
To avoid duplicate bridge MAC addresses, an IRF fabric can change its bridge MAC address
automatically after its master leaves. However, the change causes temporary service disruption.
Depending on your network condition, you can enable the IRF fabric to preserve or change its bridge
MAC address after the master leaves.
Configure the irf mac-address persistent always command in the following situations: