Command Manual – NAT&URPF&VPLS 
Quidway S8500 Series Routing Switches  Chapter 1  
NAT Configuration Commands
 
Huawei Technologies Proprietary 
1-20 
View 
System view 
Parameter 
None 
Description 
Use the ip userlog nat mode flow-begin command to enable the NAT server logging 
when an NAT connection is established and deleted. 
Use the undo ip userlog nat mode flow-begin command to restore the default 
logging mode. 
Use the corresponding commands to select the logging mode. There are three options: 
z  Perform logging only when a NAT connection is deleted.  
z  Perform logging when a NAT connection is established or deleted. 
z  Perform logging when the NAT connection is active. 
By default, the NAT server performs logging only when a NAT connection is deleted. 
Example 
# Configure to make the NAT server log when a connection is established and deleted. 
[Quidway] ip userlog nat mode flow-begin