HP 6125G HP 6125G & 6125G/XG Blade Switches IRF Command Reference-R210 - Page 13

Default level 3: Manage level Parameters always: Enables the IRF bridge MAC address to persist forever regardless of master re-election or leaving of the master. timer: Enables the IRF bridge MAC address to remain the same for six minutes after the master device leaves. If the device re-joins 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. Description Use irf mac-address persistent to configure IRF bridge MAC persistence so the IRF fabric continues using 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 disable IRF bridge MAC persistence so the IRF fabric changes its bridge MAC address as soon as the master leaves. By default, after the master device leaves, the IRF fabric continues using its bridge MAC address as the IRF bridge MAC address for six minutes. 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 proper communication. To avoid duplicate bridge MAC addresses, an IRF fabric can automatically change its bridge MAC address after its master leaves, but the change causes temporary service interruption. To avoid this situation, configure bridge MAC persistence. If two IRF fabrics have the same bridge MAC address, they cannot be merged into one IRF fabric. If ARP MAD is used, you must use the undo irf mac-address persistent command disable IRF bridge MAC persistence. Examples # Enable the IRF bridge MAC address to persist forever. system-view [Sysname] irf mac-address persistent always irf member description Syntax irf member member-id description text View undo irf member member-id description System view Default level 3: Manage level Parameters member-id: Specifies the ID of an IRF member. 10