8 
[Sysname] irf auto-update enable 
irf domain 
Use irf domain to specify an IRF MAD domain ID. 
Use undo irf domain to restore the default. 
Syntax 
irf domain domain-id 
undo irf domain 
Default 
The IRF MAD domain ID is 0. 
Views 
System view 
Predefined user roles 
network-admin 
Parameters 
domain-id: Specifies an IRF MAD domain ID. The value range is 0 to 4294967295. 
Usage guidelines 
An IRF MAD domain ID uniquely identifies an IRF multi-active detection domain. If the IRF fabric 
uses another IRF fabric as the intermediate device for LACP MAD, ARP MAD, or ND MAD, you must 
assign the two IRF fabrics different MAD domain IDs for correct split detection. False detection 
causes IRF split. 
An IRF fabric has only one IRF MAD domain ID. You can change the IRF MAD domain ID by using 
the irf domain, mad enable, mad arp enable, or mad nd enable command. The IRF MAD domain 
IDs configured by using the commands overwrite each other. 
Example 
# Set the IRF MAD domain ID to 10. 
<Sysname> system-view 
[Sysname] irf domain 10 
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 address owner leaves. 
Syntax 
irf mac-address persistent { always | timer } 
undo irf mac-address persistent 
Default 
The IRF bridge MAC address remains unchanged for 6 minutes after the address owner leaves the 
IRF fabric. 
Views 
System view