R21xx-HP FlexFabric 11900 IRF Command Reference

irf mac-address persistent

Use irf mac-address persistent to configure IRF bridge MAC persistence so the IRF fabric continues to use

the bridge MAC address of the old master as its bridge MAC address for a period of time after a master

re-election.

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 is retained for 6 minutes 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 not, the IRF fabric uses the bridge MAC address of the new master as the IRF bridge

MAC address.

Usage guidelines

Bridge MAC persistence is available in IRF mode. Changing the operating mode from IRF to standalone

can cause 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.

This bridge MAC address is used by Layer 2 protocols, for example, LACP, to identify the IRF fabric, and

must be unique on a switched LAN for correct communication.

To avoid duplicate bridge MAC addresses, an IRF fabric can automatically change its bridge MAC

address 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.

If VRRP load balancing is used, execute the irf mac-address persistent always command to prevent the

IRF bridge MAC address from changing. For more information about VRRP, see High Availability

Configuration Guide.

If two IRF fabrics have the same bridge MAC address, they cannot merge.

Examples

# Enable the IRF bridge MAC address to be permanent.

<Sysname> system-view

[Sysname] irf mac-address persistent always