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Default 
The delay time is 4 seconds. 
Views 
System view 
Predefined user roles 
network-admin 
Parameters 
interval: Sets the IRF link down report delay, in the range of 0 to 10000 milliseconds. If the 
interval is set to 0, link down events are reported without any delay. 
Usage guidelines 
When you configure the IRF link down report delay, follow these restrictions and guidelines: 
  Make sure the IRF link down report delay is shorter than the heartbeat or hello timeout settings 
of upper-layer protocols (for example, CFD and OSPF). If the report delay is longer than the 
timeout setting of a protocol, unnecessary recalculations might occur. 
  Set the delay to 0 seconds in the following situations: 
  The IRF fabric requires a fast master/subordinate or IRF link switchover. 
  The RRPP, BFD, or GR feature is used. 
  You want to shut down an IRF physical interface or reboot an IRF member device. (After you 
complete the operation, reconfigure the delay depending on the network condition.) 
Examples 
# Set the IRF link down report delay to 300 milliseconds. 
<Sysname> system-view 
[Sysname] irf link-delay 300 
irf mac-address 
Use irf mac-address to specify a MAC address as the IRF bridge MAC address. 
Use 
undo irf mac-address to restore the default. 
Syntax 
irf mac-address mac-address 
undo irf mac-address 
Default 
An IRF fabric uses the bridge MAC address of the master device as the IRF bridge MAC address. 
Views 
System view 
Predefined user roles 
network-admin 
Parameters 
mac-address: Specifies a MAC address in the format of H-H-H. The MAC address cannot be the 
all-zero or all-F MAC address, or a multicast MAC address. You can omit the consecutive zeros at 
the beginning of each segment. For example, you can enter f-e2-1 for 000f-00e2-0001.