CLI Reference  DHCP Snooping Configuration Commands 
 
This  command  is  used  to  import  the  flash  file  information  to  the  DHCP 
Snooping database in real time.   
The following example demonstrates how to import the flash file information 
to the DHCP Snooping database. 
Ruijie# renew ip dhcp snooping database 
This command is supported on all switches. 
ip dhcp snooping help 
Use this command to show the configuration help of dhcp command. 
ip dhcp snooping help 
Global/interface configuration mode. 
Currently,  you  can  enter  the  question  mark  “?”  to  display  the 
configuration help with the configuration of the next keyword or 
parameter  and  related  description.  However,  users  may  not 
understand the meaning about the description of keywords, so 
they do not know how to continue the configuration in order to 
complete the configuration task.