HPE FlexFabric 12900E Series Configuration Manual page 40

The following methods are available to configure the IRF bridge MAC address for an IRF fabric:
•
Specifying a MAC address as the IRF bridge MAC
The IRF fabric always uses the specified MAC address as the IRF bridge MAC address.
You can specify the bridge MAC address of an existing IRF fabric for a new IRF fabric to replace
the existing IRF fabric with transient packet loss.
•
Configuring IRF bridge MAC
This feature specifies the amount of time an IRF fabric can continue using a MAC address as
the IRF bridge MAC address after the address owner leaves. After the time expires, the IRF
fabric uses the bridge MAC address of the current master as the IRF bridge MAC address.
Restrictions and guidelines for IRF bridge MAC address configuration
When you configure the IRF bridge MAC address, follow these restrictions and guidelines:
•
The IRF bridge MAC persistence feature does not take effect if you specify the IRF bridge MAC
address by using the
•
If ARP MAD or ND MAD is used with the spanning tree feature, you must disable IRF bridge
MAC persistence by using the
addition, do not specify a MAC address as the IRF bridge MAC address.
•
If the IRF fabric has multichassis aggregate links, do not use the
persistent
Specifying a MAC address as the IRF bridge MAC address
1. Enter system view.
system-view
2. Specify a MAC address as the IRF bridge MAC address.
irf mac-address mac-address
By default, an IRF fabric uses the bridge MAC address of the master as the IRF bridge MAC
address.
If an IRF fabric splits after you configure the IRF bridge MAC address, both the split IRF fabrics
use the configured bridge MAC address as the IRF bridge MAC address.
Configuring IRF bridge MAC persistence
1. Enter system view.
system-view
2. Configure IRF bridge MAC persistence. Choose one of the following tasks:
Retain the bridge MAC address permanently even if the address owner has left the fabric.

irf mac-address persistent always
Retain the bridge MAC address for 12 minutes after the address owner leaves the fabric.

irf mac-address persistent timer
Change the bridge MAC address as soon as the address owner leaves the fabric.

undo irf mac-address persistent
By default, the IRF bridge MAC address does not change after the address owner leaves.
The
irf mac-address persistent timer
address changes caused by device reboot, transient link failure, or purposeful link
disconnection.
persistence.
irf mac-address mac-address
undo irf mac-address persistent
command. A violation might cause traffic disruption.
address.
command.
command avoids unnecessary bridge MAC
36
command. In
undo irf mac-address